Tagged with noise - Personal View Talks http://www.personal-view.com/talks/discussions/tagged/noise/feed.rss Sun, 28 Apr 24 00:24:37 +0000 Tagged with noise - Personal View Talks en-CA Panasonic GH2 Custom Neat Video Profiles (noise reduction) http://www.personal-view.com/talks/discussion/23754/panasonic-gh2-custom-neat-video-profiles-noise-reduction Thu, 09 Apr 2020 07:47:38 +0000 TreyM 23754@/talks/discussions Hi everyone, I spent a few hours over the past two days creating some Neat Video noise profiles for the GH2 running Moon T8. Currently, I have only created profiles for the 24H, 24L, and 720p60 SH settings, and I use Neat Video version 4. I'm not sure if these profiles will work on other versions, but they may.

If there is enough interest, I can begin to expand the profiles to support more video modes and various hacks beyond Moon T8.

I created a profile for each ISO setting, including secondary settings for the ISO bugged modes (up to 2500 ISO for those) ("clean" is normal, "dirty" is with the bug in case you forget to fix the problem and shoot with the ISO bug)

These profiles were created using the Smooth film mode at -2 -2 -2 -2, though they will probably still work with other modes. What is being picked up here is mostly sensor ISO noise since Moon T8's bitrate is so high.

The end result is that I have been able to recover about 1 - 1.5 stops of extra detail in the shadows on my shots as opposed to it looking like a total mess of noise. If you shoot at crazy high ISO settings, it can't make a shot at 12,800 ISO look like 200 ISO, but as long as your footage is reasonable, you can greatly expand the usable dynamic range of the camera and color grading is that much better.

These profiles should be used FIRST before doing any other processing such as grading, sharpening, scaling, or color correction. Etc...

The 1080p24 profiles seem to work fine on footage shot in variable mode, for example, if you use the 80% mode for slight slow motion.

Here is a link to an Imgur gallery showing what the profiles are capable of: Gallery

Download links:

1080p24 24H

1080p24 24L

1080p24 EX24H (Ex. Tele Convert Mode)

720p60 SH

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Video Noise and the Origins of Our Universe http://www.personal-view.com/talks/discussion/23840/video-noise-and-the-origins-of-our-universe Fri, 08 May 2020 14:39:02 +0000 zhalberd 23840@/talks/discussions I wanted to share an article I wrote on my blog recently that I think some on this site might enjoy if you have some spare time.

https://www.magiclantern.blog/2020/01/12/video-noise-and-the-origins-of-our-universe/

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G7 denoise presets and profiles for NeatVideo 4, 4K and FHD http://www.personal-view.com/talks/discussion/17802/g7-denoise-presets-and-profiles-for-neatvideo-4-4k-and-fhd Thu, 21 Sep 2017 15:29:28 +0000 apefos 17802@/talks/discussions NeatVideo 4 denoise presets and profiles for Panasonic Lumix G7, for 4K and Full HD.

Conservative amount of denoise to avoid plastic look and keep image texture after denoise.

Camera settings:

Standard
Sharpness +1 (also works for sharpness 0)
Noise reduction -5

Two versions:

Without shadow/highlight curves
With shadow/highlight curves, S+3/H-3 (the maximum amount before image gets ugly) (can be used also for S+2/H-2)

Download in posts below:

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Issue: Noise in the A6500 :( http://www.personal-view.com/talks/discussion/20821/issue-noise-in-the-a6500- Mon, 05 Nov 2018 12:41:19 +0000 Manu4Vendetta 20821@/talks/discussions Yesterday I made cinematography in a short film in which I used this camera accompanied by a Meike 25mm f1.8 and a Rokkor 58mm 1.2 with the profile PP5 and the Gamma S-Log3 I did not touch anything of the rest of the configuration, 1,50 ISO 1,600 only for a shot and in the rest at ISO 800, and 1/50 with a WB at 2600K because the director asked for a cold atmosphere between blue and gray.

I was surprised cause that it produced noise in both circumstances, we had illuminated using two points of light and to try although I did not use other profiles, I changed momentarily only for to see the scene behavior of the noise and in the other modes there was noise. I get a lot of attention because this camera handles sensitivity well and I made a short time inside a bus with very low light, in fact we only used a light that came from the roof of the same bus and a small LED that I used for filling using more quirky ISO's around 4,000 and the noise was minimal.

Is there any reason for it? I let a clip of the short with a gradding.

Thanks in advance.

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GH5S VFR mode BUG! http://www.personal-view.com/talks/discussion/19449/gh5s-vfr-mode-bug Sat, 14 Apr 2018 16:32:58 +0000 nobbystylus 19449@/talks/discussions On the GH5S In VFR mode (in HD) 60fps is pretty clean in all picture profiles when exposed ok. If you then lift to 62FPS or higher, suddenly there is extremely strong horizontal lines buzzing away in the shadows. This is viewable when you shoot on the LCD monitor as well as on the clip in playback. It is NOT a codec issue (ie not enough bit rate) the lines are like analog horitontal lines, and it is not a 'noise' issue, as its a very specific HORIZONTAL wiggling pattern which appears. This is in all picture profiles but obviously more noticeable in V-LOG. What's going on? Fixed pattern noise?

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4k denoise: neatvideo versus in camera noise reduction http://www.personal-view.com/talks/discussion/17833/4k-denoise-neatvideo-versus-in-camera-noise-reduction Sun, 24 Sep 2017 19:01:43 +0000 apefos 17833@/talks/discussions Neatvideo render time in 4k video is very long, very slow render, very time consuming, but quality is better than in camera noise reduction, so...

Two options for 4k denoise:

1 - use noise reduction "-5" in camera and use neatvideo in post production for a better quality denoise.

2 - use noise reduction "0" in camera and avoid neatvideo in post-production for a faster workflow.

Which one to choose?

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Low self-noise shotgun microphone http://www.personal-view.com/talks/discussion/5199/low-self-noise-shotgun-microphone Wed, 14 Nov 2012 16:07:05 +0000 tonalt 5199@/talks/discussions I have SoundDevices Mixpre and I'd like to get good microphone to it.

I have already MXL FR-300 but I'm pretty disappointed with it. When I boost gain enough so that I can pick sounds with high sensitivity from 1,5m - 2m, there is a lot self-noise in the signal.

To ensure that there wasn't problem with e.g. my cables, I did another test with Electro-Voice RE50 and there was absolutely zero noise. I know this is different mic since it's dynamic but atleast it proves that the connections are not the reason.

At http://www.dvcreators.net/shotgun-shootout/ there is good comparison between shotgun microphones. It seems that there is really big differences between mic self-noises. E.g. AUDIO TECHNICA AT897 has pretty loud noise, I'd say that sound clip is unusable. But e.g. SENNHEISER MKH-416 has virtually no noise at all and the tone in her voice is excellent.

I don't understand why anyone would buy e.g. AUDIO TECHNICA AT897 ? Is that much self-noise really acceptable to someone?

Anyway I'd like to get some recommendations about shotgun microphones. Based on the test above MKH-416 is a winner for me but that test doesn't cover everything. Requirements:

  • Low self-noise
  • Can pick sound from 1,5 - 2m away
  • Good tone
  • Price range <1000$
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Best GH2 hack for lack of noise http://www.personal-view.com/talks/discussion/14973/best-gh2-hack-for-lack-of-noise Sun, 17 Apr 2016 11:36:03 +0000 NegativeState 14973@/talks/discussions Hi all, had my GH2 hacked for about a week now. At first used the Senda hack, found all but a few shot capturing noise. Changed to the Quantum 9b hack today.. went out and got some sample shots in some woods. Still quite visible noise in most of the shots. All the time I've been having the ISO at 160 with white balance on indoor, as I've heard that the noise is mostly on the red channel and this setting uses more blue.

Is it a common thing with GH2 at low ISO to have noticeable noise in mid to dark areas? Is it just a case of using neat video on every shot? I definitely notice a improvement of actual pic quality with the hacks, just the noise is annoying & lets the quality of the picture down for me.

Is there a hack that reduces noise over others? Many thanks

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Weird Interference Noise on Zoom H6 http://www.personal-view.com/talks/discussion/14600/weird-interference-noise-on-zoom-h6 Wed, 17 Feb 2016 09:52:04 +0000 guzelmarmara 14600@/talks/discussions Hi, I have a Zoom H6 which I really love to use. Since I'm short in budget and need lavalier mics for interviews, I bought an Audio Technica ATR3350, Aputure Lav Mic and a Chinese made mic.

When I connect these mics to XLR ports with Rode's XLR adapter, there's an annoying signal sound, it's not hiss/humm, something else. When I use the 3.5 connection on the X/Y adapter of H6 with plugin power, this noise is still there.

ATR3350 has its own battery, so I don't think it's about phantom power (however I shut the power down). Also I realized when I touch the USB connection of H6 at right with my finger, the noise reduces (really weird). Same happens when I touch to the metal plate on the front face of the device as well. Somehow, my hand is stopping the noise.

When I connect these mics to Zoom H1, there's no noise. I contacted with Zoom product service, had a reply to my email, then they stopped talking with me. "Kind reminders" didn't work.

My only options for now are these devices and for a long time I'll not be able to afford a wireless transmitter. Here you can find a sound record demonstrating my problem, sorry for my weak English and moaning voice :) http://1drv.ms/1PWQCIh

Any solutions?

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Aperture blades Noise on GH4 with Metabones http://www.personal-view.com/talks/discussion/14483/aperture-blades-noise-on-gh4-with-metabones Sun, 24 Jan 2016 11:49:56 +0000 club_irate 14483@/talks/discussions My Panny GH4+ Sigma 18-35 paired with Metabones MFT-EF Speedbooster Old 0.71x version) is giving a prominently audible Aperture blades opening and closing noise (Both with the jog dial and the manual lever on the MB-SB) suddenly. This sound was not there until last time i had touched my camera (like 10 days back) and updated my Metabones firmware to 2.0 (Could the update be the reason for this iris sound or something else? I have already tried the remove and reattach the lens and the adapter, dint work.

Any clue?

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GH4 Noise http://www.personal-view.com/talks/discussion/12254/gh4-noise Tue, 27 Jan 2015 18:32:18 +0000 acvschwartz 12254@/talks/discussions Hello, first time posting here, and overall camera noob... I picked up the GH4 to do some promo vids for a clothing line I am releasing soon.. and tested it out all day today... I found the videos to be a little grainy and a little noisy.. I have uploaded 2 videos to youtube linked below. The one titled "madden" was shot in cinema 4k, 24p and was uploaded to youtube from final cut pro x using 1080p. the other video titled "gh4 noise test" was shot using FHD, 24p and was also uploaded through FCPX using 1080p.

I dont know if its just me... but I see a lot of noise and not such great quality especially on the C4K madden video which is weird. All shots are straight from the camera.. no color grading.. I know the editing and shots arent so great... but i just wanted to upload these to get your opinion... I purchased my gh4 off ebay through what seems to be a camera shop's account and they were running a promotion on the GH4 for $1,399.99 and I am using a Panasonic Lumix G Vario 14-42mm f/3.5 - 5.6 lens. Please let me know what you think... is it fine and im just overreacting? should I try to return the camera to get a new one?

MADDEN (C4K, 24p):

NOISE TEST (FHD, 24p):

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Lumix GH4 Big Noise Problem http://www.personal-view.com/talks/discussion/12612/lumix-gh4-big-noise-problem Sun, 15 Mar 2015 19:10:52 +0000 tomasawyer 12612@/talks/discussions Hi guys, I got my GH4 a month ago, and upon doing some video tests I am experiencing huge amount of noise in blacks and shadows. Even in bright daylight when i do some tests and i have something black in the video (dress, camera bag) even on ISO 400 it starts to get really big, ISO 800 almost unusable.

Anyone experiencing the same problem? Might be a faulty sensor from Panasonic? I am primarily shooting on Cine-D profile, no additional adjustments, but the problem is on Standard profile as well.

My iDynamic and iResolution is OFF.

I am really frustrated, I was expecting a better video that this noisy ants from GH4, anyone please help?

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GH4 Manual focus being over riden?? http://www.personal-view.com/talks/discussion/12446/gh4-manual-focus-being-over-riden Mon, 23 Feb 2015 13:30:09 +0000 AlanEHoward 12446@/talks/discussions Hi all.. the clip below shows several issues I've been facing with the GH4 but mostly focus... Having seen some online tutorials it seems manual focus isn't as simple as you've expect ... The following clip had the camera set up for manual focus but, as you'll see approx 40 secs in it starts to hunt for focus (but only then!)..... am I missing something in the menu? I can't explain this ... I've checked and the button at the back was set to MF, although in the menu AFS/AFF is set to AFS and continuous AF is set to on (surely MF on the back overrides all this??)...... as the video shows the subject hardly moved and I never touched the focus ring ... re audio on the video, I'm waiting for the musician to supply a clean audio track!

Also I'd love some input from others on colours and noise ... This was shot using a cinelike D mode with everything set to 0 and edited in Prem Pro 2014 , If memory serves I was on 800 ASA which is high but I expected better results for the noise ... The "black" bars are not the same black as the black surrounding them on my monitor... I output the clip using the factory preset for Vimeo which presumably is RGB as opposed to 709, so surely the black bars should match the black on my screen?? (the bars are a shade lighter)

Aside from the focus issue I'd be very grateful for comments / advice / guidance on noise especially in the blacks which are always a bit crappy ..

Thanks

Alan

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Wind Noise Reduction http://www.personal-view.com/talks/discussion/12328/wind-noise-reduction Fri, 06 Feb 2015 10:37:14 +0000 gameb 12328@/talks/discussions I am working on the postproduction of a documentary that I shot in the Caribbean, mostly in coastal areas, where the wind was blowing. Even with windprotection attached to mics, I have got some wind noises. Anybody knows a magical wind noise reduction filter? The ones I tried in FCPX change the sound so much, that it sounds ugly.

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Noise Reduction software like Neat Video http://www.personal-view.com/talks/discussion/5712/noise-reduction-software-like-neat-video- Tue, 08 Jan 2013 11:09:48 +0000 Brian_Siano 5712@/talks/discussions I'm looking for some seriously good noise reduction software, and these are the two that keep getting discussed. Right now, I'm probably going to get ColorGhear-- it's cheaper, there's a lot of color correction features, handles full-hi-def for the money, plus the tutorials-- but Neat keeps getting nice notices for noise reduction.

Has anyone used both of these? Or developed some kind of comparison video?

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Boson http://www.personal-view.com/talks/discussion/11199/boson Fri, 05 Sep 2014 08:24:37 +0000 apefos 11199@/talks/discussions WorkHorse Boson

highest possible careful tweaked settings for very high image quality with enough stability for short takes up to 5 - 8 minutes.

Improved for best low light noise and textures in all modes, perfect for high iso, and excelent image texture in good light.

Arri Alexa image quality inside the GH2, (just missing the Alexa dynamic range of course)

default version:

*SH and H slots are better for good light in low iso and for more detailed scenes in good light

*SH slot is higher quality and more stable with manual focus legacy lenses

*H slot more stable with native lenses with electronic contacts

*H slot also better for use with image stabilization

*hbr is better in good light than in low light

*default version is more stable in SH and H 720p and in HBR than the boson version

*24p 24H and 24L are the same of boson

*great quality in all modes

boson version:

*SH slot improved for low light textures and noise

*H slot better for good light in low iso, better for more complex details scenes in good light

*H slot is more stable for native lenses

*HBR does the low light / good light balance automaticaly for better noise in low light or better detail in good light

*24p has same noise quality in both good light or low light for constant image texture this keeps same random noise in all light conditions, good for intercut with SH

*a little less stable in 720p and HBR than the default version

*best quality in all modes

seta = workhorse default

setb = workhorse boson

setc = workhorse default lower datarate in SH and H for more stability in 720p and hbr

setd = workhorse boson lower datarate in SH and H for more stability in 720p and hbr

sete = same as seta, but the 24H and 24L are optimized to deliver sharpest image for steady complex detail scenes, it does the automatic adaptation in 24p for low light noise or good light steady complex detail scenes

setf = same as setc, but the 24H and 24L are optimized to deliver sharpest image for steady complex detail scenes, it does the automatic adaptation in 24p for low light noise or good light steady complex detail scenes

all tests performed in NTSC with the Sandisk 32GB SDHC Class 10 U1 45Mbps card.

transcode the original mts files to Apple ProRes 422 full range using the 5DtoRGB free software before editing to avoid the diagonal pattern rain problem. Try the ProRes HQ, normal and LT versions to perceive the best balance between quality/file size.

as of september 05 2014 all versions are modified flowmotion 2.02 with extensive careful tweaking

please donate to www.personal-view.com

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Post production sound http://www.personal-view.com/talks/discussion/10727/post-production-sound Sat, 05 Jul 2014 05:04:30 +0000 spacewig 10727@/talks/discussions So, I was sitting at a table at a pub tonight with some fat , arrogant cunt that insisted on the idea that unless one was using a particular software it was simply not possible to achieve a professional post-production audio result for their video work. I respectfully disagreed and, following an absurd discussion on the stupidity of software dogma, would like to assist my fellow indie filmmakers struggling with audio on their film productions with some basic workflow/strategies/techniques to achieve the best possible results in so much as audio is concerned . Having said that, I have no desire to do this unless I know there is some kind of demand for such information. Should this be of interest to you, please reply. I'd be happy to share my knowledge/ideas. If there is enough demand I'd be glad to make some videos to illustrate the methods I use.

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"Noise Reduction Tip for the GH2 thats MASSIVE" http://www.personal-view.com/talks/discussion/2914/noise-reduction-tip-for-the-gh2-thats-massive- Tue, 17 Apr 2012 16:12:46 +0000 theteddy 2914@/talks/discussions Im sure this has been mentioned on Personal View somewhere but I'm damned if I can find it. In the link
Drew from the Drew Network claims in episode 6 of Hacked GH2 that by shooting only in >white balance> incandescent (the little lightbulb icon) in Vibrant mode, and then correcting in post you can virtually eliminate noise. The theory being that its the red channel that is the culprit. I cant test this myself as I've only got a crappy consumer editing suite. Note that whats shown on You Tube is client ready footage, hence the crushed blacks. I think he uses CS 5.5. Does this actually work ? He gets to the point after the 5 minute mark.

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Share your D7100 movie picture style http://www.personal-view.com/talks/discussion/10661/share-your-d7100-movie-picture-style Tue, 24 Jun 2014 06:16:07 +0000 psychoanima 10661@/talks/discussions Hi all,

I am the proud owner of the D7100 and I don't know if you were desperate as I was while watching first movie tests recorded with this camera. You guess it: Horizontal noise, or bending if you prefer.

Of course I tried different picture styles for D7000 and they looked terrible because the sensor is not the same. The D7000's chip doesn't have same banding issues as Toshiba's on D7100.

So, I decided to experiment by myself with PictureControlUtility and create my own style that can satisfy my needs while shooting the video with my awesome D7100. My picture style can be found here:

https://www.dropbox.com/s/3jwjilqgqtf4sgi/D7l00K.rar

It's based on Neutral pic style. With this look I can go up to ISO 4000 and to enjoy image quality, where grain looks more film like and less digital. It has more contrast than usual Neutral style, BUT less horizontal noise, and in my case I can recover dark parts very easily in DaVinci Resolve.

Anyway, I open this topic because I would like, as many others I guess, to see from other videographers their custom D7100 Picture style(s), to share it here with the other users as an alternative for shooting with less 'bending' headache :)

Cheers!

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My GH3/lens makes "motor" noise even in manual when motionless http://www.personal-view.com/talks/discussion/10437/my-gh3lens-makes-motor-noise-even-in-manual-when-motionless Thu, 22 May 2014 21:00:12 +0000 harmon_eyes 10437@/talks/discussions I just got a GH3 and I'm using a Lumix 14-140 F3.5-5.6 zoom. As soon as I attach the lens and turn the camera on--even if the camera is in manual mode, with manual focus--if my ear is within, say, 3" of the camera (the side where the lens attaches), I hear a subtle but unmistakable noise that sounds a bit like a grinding motor but that you could also convince me is something electronic.

Does the GH3--or could my lens--have a motor that runs even when the camera is in manual mode (even for stills), set on manual focus, and is simply sitting there, pointed at a surface with a constant exposure?

I've got the OIS switch turn off on the lens, as well as every camera function I can think of.

The only time that the sound goes away is when the camera is in "Scene" mode--but as soon as a scene setting is "set," the noise comes back.

I have updated the camera to the 1.2 firmware.

I've never worked with a DSLR before, and I'm a bit of a newbie in general (most interested in video). Is this normal?

Any help appreciated!

Thanks!

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Flow Motion 2.02 Noise http://www.personal-view.com/talks/discussion/9682/flow-motion-2.02-noise Fri, 21 Feb 2014 07:02:29 +0000 ThomOswald 9682@/talks/discussions

I keep getting noise on these files. Any tips? SanDisk 32gb 95mb/s Extreme Pro 24p cinema Smooth all -2 24H f - 7.1 iso 160

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Lifting GH3 shadows + Neat Video (gif) http://www.personal-view.com/talks/discussion/9520/lifting-gh3-shadows-neat-video-gif Sat, 01 Feb 2014 23:48:46 +0000 joethepro 9520@/talks/discussions The detail the GH3 keeps in the blacks is pretty amazing. Never ceases to amaze me. The noise is so manageable! This was at ISO 800. This is a 100% crop, just a curves adjustment + Neat Video NR. I probably should have pushed it further for the example, but you get the point.

image

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Nikon D7100 noise banding effect in video http://www.personal-view.com/talks/discussion/9565/nikon-d7100-noise-banding-effect-in-video Fri, 07 Feb 2014 06:16:45 +0000 loop_1 9565@/talks/discussions Hi, in this days i used my new D7100 for some tests... good camera, good sharp, all good!

But there is a problem!! :-O

In the attached file you can see a test screenshoot (from a video frame) where in the underexposed areas (like the blue) there are some noise (but not much) and many lines, like small banding... this at 400 iso...

why this? IT's a D7100 problmem? Anyone have this issue?

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Free Guide: Audio Repair with RX 3 - Tools, Tips, and Techniques http://www.personal-view.com/talks/discussion/8768/free-guide-audio-repair-with-rx-3-tools-tips-and-techniques Wed, 13 Nov 2013 10:57:00 +0000 Vitaliy_Kiselev 8768@/talks/discussions Main contents:

  • The basics of audio repair and restoration, and understanding “the tools of the trade.”
  • Using a spectrogram to identify audio problems.
  • Expanding efficiency in de-noising, including reducing broadband noise, hum and tonal noise, and dialogue de-noising.
  • Removing intermittent noises and gaps, clicks and pops, clipping, and reverb.
  • Techniques for exporting and delivering audio.
  • Tips from industry leaders, including time-saving advice and guidance through specific modules and plug-ins.

http://downloads.izotope.com/guides/iZotope_AudioRepair.pdf

or

https://itunes.apple.com/us/book/audio-repair-with-rx-3/id716947330

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AVCHD VS MJPEG http://www.personal-view.com/talks/discussion/7855/avchd-vs-mjpeg Thu, 22 Aug 2013 12:45:42 +0000 Manoosh 7855@/talks/discussions Hi everybody.

Thanks to every workers and tester for your job.

I see lot of post about Mjpeg vs avchd, the majority of people say avchd better than Mjpeg. But today I'm not sure...

I was making a shot test between 24h/HBR/Mjpeg with "Driftwood Cluster X series 3:│moon T7" The scene is very contrasted with highlights and black.

I prefer Mjpeg...!!! Because the noise is the same and I see more details and more sharpen.

I want know if somebody testing Mjpeg and say the same thing.

25p and 2K possible? with the option Mpjeg fps of ptools?

The time limite?

Mjpeg in 2K 25p no limited time, It 's dream for me.

Thanks for your answers!

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ACR for video http://www.personal-view.com/talks/discussion/7815/acr-for-video Sat, 17 Aug 2013 12:40:07 +0000 Micah 7815@/talks/discussions I'm giving the new PS a "try". In it, you can now apply Adobe Camera Raw to video clips, so I figured I'd see how well the noise reduction worked. And I'm a little bit shocked at how good it is. (process: drag clip into PS, convert for smart filters, apply ACR as a filter, render out--sound stayed attached!)

The original clip was shot at betwee 6400 to 25600 (it was a mistake and I immediately changed the setting, so I can't remember) on my D7100. Apologies for the shaky cam action, since I was just getting a grab while taking stills. The original MOV is straight out of cam and the mp4 is what PS accomplished.

http://h.micahmedia.com/airshow.zip

The ACR engine is very, very slow. Almost too slow to be practical. And oddly, it only consumed half my processor power while rendering, so it seems to me to be just inefficient. But the results speak for themselves I think.

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GH2 IR Filtering and How to Achieve Clean Shadows http://www.personal-view.com/talks/discussion/7785/gh2-ir-filtering-and-how-to-achieve-clean-shadows Wed, 14 Aug 2013 20:46:08 +0000 smsjr 7785@/talks/discussions For the most part I am very happy with the latest crop of hacks. I think they are squeezing about as much juice from the GH2 fruit as possible, but two areas I still am curious about.

Today I was testing with Tiffen Standard Hot Mirror. I will try to post some results in the coming days but two things jumped out at me. Black fabrics were contaminated with or without the hot mirror and as usual were also a bit noisy which is something this camera suffers from. The noise I can deal with in post, especially when I capture a nice accurate profile of it on set. Makes the job in post that much easier.

But I'm curious what people have experienced with IR solutions. In my arsenal, I currently have a Tiffen hot mirror, Tiffen IRND 1.5, 1.8, 2.1 as well as Pancro IRND 1.2 and 1.5. I have only tested with the Tiffen filters. Haven't tried my Pancros yet.

I also need to test more materials under various lighting.

I'd love to hear from people who have done this testing already so I can compare notes.

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Panasonic Doubles Color Sensitivity in Sensors http://www.personal-view.com/talks/discussion/6031/panasonic-doubles-color-sensitivity-in-sensors Wed, 06 Feb 2013 09:38:10 +0000 adamzmith 6031@/talks/discussions

Panasonic says its technology increases camera sensitivity by one whole stop. This means its cameras will theoretically produce the same level of noise at ISO 1600 as Bayer sensor-equipped cameras do at ISO 800

image

http://panasonic.co.jp/corp/news/official.data/data.dir/2013/02/en130204-6/en130204-6.html

Sounds very promising...

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Self Introduction & Question about Noise Reduction http://www.personal-view.com/talks/discussion/6413/self-introduction-question-about-noise-reduction- Sat, 16 Mar 2013 16:01:59 +0000 PCortacans 6413@/talks/discussions Hello everyone. My name is Pedro from Barcelona (Spain). Semi-pro photographer (www.pcortacansphoto.com), on my way to videographer.

For a long time, I've shot videos with any photo camera that I'd have around, not taking care about shutter speed, fps, etc. After some months of saving and research, I decided to go for a GH3. I feel now confident enough to show some of my work to the world (via Vimeo).

Last week I shot a movie in a hospital. Not every space was well lit, and after editing and some basic color grading, I realized there's some kind of noise (or blocks, I'm not sure) on the darker areas (specially black plastic chairs in waiting rooms).

Technicalities: GH3+12-35 f2,8 , MOV at 25fps and 50fps, ISO not higher than 1600, Premiere on Mac.

My question is: is there any serious noise reduction technique in Premiere? Photoshop is excellent at noise reduction, and I am really surprised that everybody is skipping Premiere when talking about N-R, and talking about 3rd party apps.

Please find below a link to the video.

Thank you in advance for your answers!

P.

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GH2 ISO noise bug at 320, 640, and 1250 http://www.personal-view.com/talks/discussion/1280/gh2-iso-noise-bug-at-320-640-and-1250 Tue, 25 Oct 2011 22:00:03 +0000 balazer 1280@/talks/discussions
Switching to ISO 320: low noise from 400, 500, or sometimes 640; high noise from all others and from power off
Switching to ISO 640: low noise from 800, 1000, or 1250; high noise from all others and from power off
Switching to ISO 1250: low noise from 1600 or 2000; high noise from all others and from power off

I couldn't detect the bug when switching to any of the other ISO settings - if it's there, it's subtle. But for 320, 640, and 1250, it was unmistakable. Aside from the bug, I would say that none of the ISO levels seemed particularly more or less noisy than would be expected. I'd say to use whatever ISO level you need, being careful to avoid the bug.

Note that it is not sufficient to simply switch from any higher ISO to avoid the bug.

A good practice for ISO 320, 640, and 1250 would be to switch to the ISO setting 1/3 stop higher, and then back down. (i.e., 400 to 320, or 800 to 640, or 1600 to 1250). ]]>