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gh2-usage:gh2-usage [2013/03/04 02:28] balazer |
gh2-usage:gh2-usage [2014/02/14 05:41] (current) balazer added GH4 to sensor coverage table |
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| * 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. |
| - | + | ||
| - | ^GH2 sensor coverage (diagonals in mm)^^^^^ | + | |
| - | ^ ^ ^ 720 ETC ^ 1080 ETC ^ non-ETC ^ | + | |
| - | ^ ^ ^ (5.5 mm)^ (8.3 mm) ^ (21.5 mm) ^ | + | |
| - | ^ 1/3" ^(6 mm) | 108% | 72% | | | + | |
| - | ^ 1/2" ^(8 mm) | | 96% | | | + | |
| - | ^ 2/3" ^(11 mm) | | 133% | | | + | |
| - | ^ 1" ^(16 mm) | | 193% | 74% | | + | |
| - | ^ 8-mm ^(6.11 mm) | 110% | 74% | | | + | |
| - | ^ Super 8 ^(7.5 mm) | 136% | 90% | | | + | |
| - | ^ 16-mm ^(12.7 mm) | | 153% | | | + | |
| - | ^ Super 16 ^(14.4 mm)| | 173% | 67% | | + | |
| - | ^ Super 35 ^(31.1 mm)| | | 145% | | + | |
| - | ^ APS-C ^(28.3 mm)| | | 132% | | + | |
| - | ^ 35-mm FF ^(43.2 mm)| | | 201% | | + | |
| * 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. | ||