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gh2-usage:gh2-usage [2013/02/19 03:29] balazer |
gh2-usage:gh2-usage [2014/02/14 05:41] (current) balazer added GH4 to sensor coverage table |
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| * Noise goes up at higher ISO settings (with [[http://personal-view.com/talks/discussion/2078/gh2-iso-noise-tests.-lows-mids-highs.-magic-iso-#Item_13|minor exceptions]]). Everyone's noise tolerance is different, so do some testing to find what your tolerance is. Shadow range gradually diminishes starting at ISO 2000. | * Noise goes up at higher ISO settings (with [[http://personal-view.com/talks/discussion/2078/gh2-iso-noise-tests.-lows-mids-highs.-magic-iso-#Item_13|minor exceptions]]). Everyone's noise tolerance is different, so do some testing to find what your tolerance is. Shadow range gradually diminishes starting at ISO 2000. | ||
| * An ISO setting of 320, 640, or 1250 may result in increased noise depending on the camera's previous setting. To avoid this, switch the camera 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). If you turn the camera off while in ISO 320, 640, or 1250, you must repeat the ISO switching after turning the camera back on to avoid higher noise. [[http://personal-view.com/talks/discussion/1280|discussion]] | * An ISO setting of 320, 640, or 1250 may result in increased noise depending on the camera's previous setting. To avoid this, switch the camera 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). If you turn the camera off while in ISO 320, 640, or 1250, you must repeat the ISO switching after turning the camera back on to avoid higher noise. [[http://personal-view.com/talks/discussion/1280|discussion]] | ||
| - | * Set the film mode to Standard with -1, -2, -2, -2. Adjust contrast and saturation as necessary. | + | * Set the film mode to Standard with noise reduction to -2. |
| + | * Set sharpness to -2 for Lumix lenses, and 0 for manual lenses. | ||
| + | * Adjust contrast and saturation as necessary. | ||
| == Extra Tele Conversion (ETC) mode == | == Extra Tele Conversion (ETC) mode == | ||
| * ETC mode is an in-camera crop mode with one-to-one pixel mapping. | * ETC mode is an in-camera crop mode with one-to-one pixel mapping. | ||
| * With ETC mode turned off, the GH2 uses a 14-megapixel (4976 x 2800 pixel) area of the image sensor covering its entire width, downsampling it to an output of 1920 x 1080 or 1280 x 720 pixels. | * With ETC mode turned off, the GH2 uses a 14-megapixel (4976 x 2800 pixel) area of the image sensor covering its entire width, downsampling it to an output of 1920 x 1080 or 1280 x 720 pixels. | ||
| * With ETC mode turned on, the camera uses a 1920 x 1080 or 1280 x 720 pixel area of the center of the image sensor, mapping each pixel 1:1 from the sensor to the output video. | * With ETC mode turned on, the camera uses a 1920 x 1080 or 1280 x 720 pixel area of the center of the image sensor, mapping each pixel 1:1 from the sensor to the output video. | ||
| - | * ETC mode gives you a narrower field of view - 2.6 or 3.9 times narrower, a picture that's slightly less sharp, has less aliasing, less of a rolling shutter effect ("jello"), and is much noisier for the same ISO setting - equivalent to raising the ISO setting by 2 and 2/3 stops. [[http://personal-view.com/talks/discussion/1353/gh2-etc-mode-noise-penalty|discussion]] | + | * For the same lens, ETC mode gives you a narrower field of view - 2.6 or 3.9 times narrower, a picture that's slightly less sharp, has less aliasing, less of a rolling shutter effect ("jello"), and is much noisier for the same ISO setting - equivalent to raising the ISO setting by 2 and 2/3 stops. [[http://personal-view.com/talks/discussion/1353/gh2-etc-mode-noise-penalty|discussion]] |
| + | * AVCHD recording in ETC mode is subject to electrical impulse noise that depends on the ISO setting. [[http://www.personal-view.com/talks/discussion/1280/gh2-iso-noise-bug-at-320-640-and-1250/p3#Item_54|explained]] | ||
| == Low-light shooting == | == Low-light shooting == | ||
| * With Auto ISO and the exposure compensation value set to +/- 0, the camera goes up to 6400. With the exposure compensation value set to the maximum, auto ISO goes up to 12,800. | * With Auto ISO and the exposure compensation value set to +/- 0, the camera goes up to 6400. With the exposure compensation value set to the maximum, auto ISO goes up to 12,800. | ||
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| * Final Cut Pro 7 - transcode using [[http://rarevision.com/5dtorgb/|5DtoRGB]] or ?? | * Final Cut Pro 7 - transcode using [[http://rarevision.com/5dtorgb/|5DtoRGB]] or ?? | ||
| * Final Cut Pro X - native AVCHD: copy the Private folder in its entirety, and then File>Import From Camera>Open Archive. Or, rewrap MTS to MP4 using [[http://www.divergentmedia.com/clipwrap|ClipWrap]] | * Final Cut Pro X - native AVCHD: copy the Private folder in its entirety, and then File>Import From Camera>Open Archive. Or, rewrap MTS to MP4 using [[http://www.divergentmedia.com/clipwrap|ClipWrap]] | ||
| - | * Grass Valley Edius 5.51 or higher - native AVCHD | + | * Grass Valley Edius 5.51 or higher - native h.264/MTS |
| * Grass Valley Neo 2.5 or higher - native AVCHD | * Grass Valley Neo 2.5 or higher - native AVCHD | ||
| == How to cut/trim GH2 videos without re-encoding == | == How to cut/trim GH2 videos without re-encoding == | ||
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| * Just about any lens that has manual focusing and manual aperture control can be used on the GH2 with an adapter. Look on eBay for adapters. | * Just about any lens that has manual focusing and manual aperture control can be used on the GH2 with an adapter. Look on eBay for adapters. | ||
| * Full-frame 35-mm camera lenses project an image circle that more than covers the GH2's sensor, but since the GH2's sensor is smaller than full frame 35-mm, the resulting images have a narrower angle of view than if you were using the same lens on a full-frame 35-mm camera - 1.9 times narrower in 16:9 mode. | * Full-frame 35-mm camera lenses project an image circle that more than covers the GH2's sensor, but since the GH2's sensor is smaller than full frame 35-mm, the resulting images have a narrower angle of view than if you were using the same lens on a full-frame 35-mm camera - 1.9 times narrower in 16:9 mode. | ||
| - | * C-mount lenses are meant for several different [[http://en.wikipedia.org/wiki/Image_sensor_format#Table_of_sensor_formats_and_sizes|film and video formats]], and generally require some cropping in the camera (ETC mode or 2x zoom) or in post when used with the GH2. | + | * C-mount lenses are meant for several different [[http://en.wikipedia.org/wiki/Image_sensor_format#Table_of_sensor_formats_and_sizes|film and video formats]], and generally require some cropping in the camera (ETC mode or 2x zoom) or in post when used with the GH2. Note that c-mount adapters for m43 have a recessed c-mount flange, so not all c-mount lenses will fit without modification. |
| - | * 1/3" format closely matches 720p ETC mode and 72% covers 1080 ETC mode | + | |
| - | * 1/2" format closely matches 1080 ETC mode | + | |
| - | * 2/3" format more than covers 1080 ETC mode | + | |
| - | * 1" format 73% covers the full 4/3 sensor | + | |
| - | * 8-mm format closely matches 720p ETC mode and 74% covers 1080 ETC mode | + | |
| - | * Super 8 format 90% covers 1080 ETC mode | + | |
| - | * 16-mm and Super 16 formats more than cover 1080 ETC mode | + | |
| * Specific lenses: | * Specific lenses: | ||
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| * Big list of [[http://personal-view.com/talks/discussion/859/video-friendly-lenses-for-lumix-dslrs/p1|video-friendly lenses]] | * Big list of [[http://personal-view.com/talks/discussion/859/video-friendly-lenses-for-lumix-dslrs/p1|video-friendly lenses]] | ||
| + | |||
| + | == Sensor Coverage == | ||
| + | Format diagonals in millimeters are calculated from the camera apertures. Sensor mode diagonals in millimeters are calculated from the pixel pitch and 16:9 mode resolution. Only combinations of lenses and sensor modes are shown here that yield at least 720p. | ||
| + | ^ ^ ^ GH2 & GH3 ^^ GH2 ^ GH3 & GH4 ^ GH4 ^^ BMPCC ^ BMCC ^ | ||
| + | ^ ^ ^ 720 ETC ^ 1080 ETC ^ non-ETC ^ non-ETC ^ 3.8k ^ Cinema 4k ^ 1080p ^ 2.4k ^ | ||
| + | ^ ^ ^(5.51 mm)^ (8.26 mm)^ (21.41 mm)^ (19.83 mm) ^ (16.52 mm) ^ (17.36 mm) ^ (14.32 mm) ^ (18.13 mm) ^ | ||
| + | ^ 1/3" ^(6.00 mm) | 108% | 73% | | | 36% | | | | | ||
| + | ^ 1/2" ^(8.00 mm) | | 97% | | | 48% | | | | | ||
| + | ^ 2/3" ^(11.00 mm) | | 133% | | | 67% | | 77% | | | ||
| + | ^ 1" ^(16.00 mm) | | 194% | 75% | 81% | 97% | | 117% | 88% | | ||
| + | ^ 4/3" ^(22.00 mm) | | | 103% | 111% | 133% | 127% | 153% | 121% | | ||
| + | ^ 8 mm ^(6.11 mm) | 110% | 74% | | | 37% | | | | | ||
| + | ^ Super 8 ^(7.04 mm)| 128% | 85% | | | 42% | | | | | ||
| + | ^ 16 mm ^(12.70 mm) | | 154% | | | 77% | | 89% | | | ||
| + | ^Super 16^(14.55 mm)| | 176% | 68% | 73% | 88% | | 102% | 80% | | ||
| + | ^Super 35^(31.11 mm)| | | 145% | 157% | 188% | 179% | 217% | 172% | | ||
| + | ^APS-C ^(28.4 mm)| | | 133% | 143% | 172% | 164% | 198% | 157% | | ||
| + | ^35 mm FF ^(43.23 mm)| | | 202% | 218% | 262% | 249% | 302% | 238% | | ||
| + | * Different 4/3" formats define image circles varying in diameter from 21.5 to 23 mm. Super 35 is the ANSI Super 35 4:3 silent aperture. APS-C is Nikon DX, which is slightly larger than Sony and Canon APS-C. 35 mm full-frame is 36 x 24 mm. The GH2 and GH3 non-ETC mode sensor areas differ because of the GH2's oversized multi-aspect ratio sensor. | ||
| == GH2 audio recording == | == GH2 audio recording == | ||
| * The GH2's built-in audio recording is pretty good. You choose one of four gain levels. All settings have auto limiting, and little or no automatic gain adjustment. Use the on-screen audio meter to monitor levels in real time. | * The GH2's built-in audio recording is pretty good. You choose one of four gain levels. All settings have auto limiting, and little or no automatic gain adjustment. Use the on-screen audio meter to monitor levels in real time. | ||