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Showing content with the highest reputation on 02/03/2013 in all areas
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Comparing Actual Camera Resolutions
BydrodoFieddy reacted to jcs for a topic
A camera list and resolution chart showing something like this would be helpful (and motivate manufacturers to build products trying to get higher up on this list): After working on this list for a while and seeing more charts, understanding Nyquist sampling theory is helpful ( http://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem ). Take the sensor width in pixels and divide by 2 to get a fair estimate of sampling resolution before aliasing. While aliasing past Nyquist can help make an image, especially a still frame, look sharp, when in motion, an alias-free image, especially with sufficient grain and high-frequency detail, will look most like film. Thus, even though the ARRI Alexa is only a 1080p camera, it currently produces the most film-like image and explains why it is used most when cost is no object. <all cameras below have pro audio quality. Listing SNR & noise floor would be helpful) F65 - 3.9K (8K sensor with a few tricks, not true 4K) - 16-bit RAW RED - 3.xK (6K sensor: Dragon) - Wavelet compressed RAW RED - 2.5K (5K sensor) - Wavelet compressed RAW (see charts in this thread) 1DC - 2.xK - 8-bit MJPEG and H.264 ("4K" mode, need charts) F55 - 2.xK - 10-bit, XAVC, RAW (optional, extra hardware) F5 - 2.xK - 10-bit, XAVC, RAW (optional, extra hardware) FS700 - 2.xK (estimated with "4K" upgrade) - 12-bit RAW (extra firmware and hardware) ARRI Alexa - 1.9K (3.5K sensor) - 444 and RAW - pretty much zero aliasing and very film-like grain (see charts in this thread) BMCC - 1.xK (needs a test chart: will be less the 2.7K, closer to 2K from what I have seen so far) - 12-bit RAW <1/4" audio in> Hero 3 1.xK (needs a test chart) - 8 bit, 2.7K mode, H.264 F3 - 1.9K - 10-bit - Sony Pro CODECS, 10-bit 422 out 1DC - 1.9K - 8-bit H.264 Super 35 Mode C300 - 1.9K - 8-bit, 50Mbps long GOP MPEG2 (422), 8-bit 422 out, minimal aliasing C100 - 1.9K - 8-bit, Very high quality 24Mbps H.264:AVCHD (420), 8-bit 422 out, minimal aliasing FS700 - 1.9Kv, >1.9k diagonal, ~1.6Kh (trumpet chart) - 8-bit - Very high quality 24Mbps H.264:AVCHD, 8-bit 422 out, some aliasing FS100 - 1.9Kv, >1.9k diagonal, ~1.6Kh (trumpet chart) - 8-bit - Very high quality 24Mbps H.264:AVCHD, 8-bit 422 out, some aliasing GH2 - 1.7K - 8-bit,H.264:AVCHD <add hacked bitrates> <not pro audio, add audio details> TM700 - 1.7K - 8-bit, 28Mbps H.264:AVCHD (60p), excellent IS, loud fan (audio issue) <insert popular camcorders such as TM900, G10/XA10, NEX camcorders, XF105/305, etc.> <all cameras below don't provide pro audio> GH3 - 1.8-1.9K? - 8-bit, 90Mbps H.264 I-frame, ~40Mbps IPB <add audio details> Hero 3 1.8-1.9K? - 8 bit, 1080p mode, H.264 1DC - 1.7K* - 8-bit H.264 full frame 1080p mode 1DX - 1.7K* - 8-bit H.264 full frame 1080p 5D3 - 1.6K (post-sharpened) - 8-bit, 90Mbps H.264 I-frame, ~40Mbps IPB <audio - 1/8" stereo mic, average noise floor> 6D - ~1.6K (post-sharpened) - 8-bit, 90Mbps H.264 I-frame, ~40Mbps IPB 5D2 - 1.5K - 8-bit, ~38Mbps H.264 IPB <audio - 1/8" stereo mic, average to poor noise floor> This was a quick write up without verifying some of these items. Anyone interested: please correct and/or add detail to this list. The resolution column is actual resolution of captured frames when displayed as RGB. Sensor resolution and manufacturer claims ignored in favor of actual hardware testing. Cameras such as the 5D3 may exhibit first artifacts around 1200 pixels (600 TV Lines), however detail extinction does not occur until around 1620 pixels (810 TV lines). Thus, it would be helpful to show both first artifacts as well as detail extinction. See also: http://lagemaat.blogspot.com/2007/09/actual-resolution-of-bayer-sensors-you.html *1DC, 1DX 1080p mode: estimated (looks slightly higher resolution vs. 5D3) <TODO> Add supported frame rates. Sony FS100/700 have unusual resolution behavior. Diagonal resolution is 1000+, vertical is ~1000, however horizontal is ~800 (when using a trumpet chart). A line chart shows 1000 or so for horizontal resolution, however aliasing has started. These cameras can also alias on fine horizontal and vertical lines. C100/C300 can also alias, however the cameras provide 1000 lines of resolution on both h and v.1 point -
Urban Exploration, filmed with Canon 7D
Sean Cunningham reacted to mindcut for a topic
https://vimeo.com/57522480 A deserted border station of nowhere ... a film by Paul Prinz visit us : facebook.com/pages/Mindcut/495530123831429 Used Equipment Canon 7D Canon EF-S 15-85mm Kessler Cineslider / motorised Music bei Ludovico Einaudi (no commercial Use)1 point -
Metabones Speed Booster review
BydrodoFieddy reacted to Andrew Reid for a topic
http://vimeo.com/57901943 Buy the E-mount Metabones Speed Booster - $599 for Canon EOS lens adapter, $399 for others The Metabones Speed Booster adapter brings the full frame look to Sony mirrorless APS-C and Super 35mm E-mount. (Indeed it will bring the Super 35mm look to Micro Four Thirds but not until March). It also gives you an extra stop of light. F2.8 becomes F2.0 and F2.0 becomes F1.4. F1.2 becomes a lightning fast F0.90. It would appear the full frame sensor is now rather pointless. Is there a catch, a trade off in image quality?1 point -
GH3 color shifting LCD screen?
BydrodoFieddy reacted to XXX for a topic
Has anyone encountered a color shift to green when not looking at their GH3s back LCD perfectly straight? Screens tend to get darker when looking more from the side, but this shift to green is really distracting, at least for me...1 point -
Blackmagic Cinema Camera gets a rival - Dan Chung shows us the KINERAW MINI
gebybaidway reacted to Andrew Reid for a topic
In a sea of insipid and faceless cameras for the corporate workplace, here is something different. Like the Blackmagic Cinema Camera it is designed for filmmakers who want image quality as close to Super 35mm film as possible but can't afford $15,000+ This is rumoured to be around the $4000 mark and has a Super 35mm sensor, Cinema DNG raw recording and a very compact body with no fan.1 point -
Sony RX100: Getting the best video out of it...
Ratguity reacted to Rungunshoot for a topic
Bruno, thanks for this advice. My main gripe with the RX100 is trying to do 24p with the NTSC version. Neither 30p nor 60p cleanly converts to 24p (at regular speed, not slow-mo). It always has that weird, skipped-frame look. I've used Optical Flow rate conforming in FCP X to some success, but it's never been perfect. I understand you're in a PAL region and are shooting 25p, but if anyone has any advice on getting non-jerky 24p out of this cam I'd appreciate the help.1 point -
Urban Exploration, filmed with Canon 7D
Sean Cunningham reacted to mindcut for a topic
Hi, Thank you, i'm so happy that my little film touches you. The flashes were done in post.1 point -
FS100: GH2: From these charts, the FS100 has higher peak resolution but the GH2 has more area under the curve and thus better overall accutance. 5D2: 5D3: Similarly, the 5D3 has more contrast at higher frequencies (peak resolution), however it has lower area under the curve. Thus the 5D2 has better overall accutance straight from the camera. Sharpened 5D3 footage looks more detailed than 5D2 footage (which can't be sharpened much). Thus, overall peak accutance depends on how much the image can be sharpened in post. Sharpening increases microcontrast (but not peak sampled resolution) and will thus affect these types of tests. In summary, the FS100 provides higher peak resolution, and the GH2 provides better accutance. Out of the camera, the 5D2 provides better accutance and after post sharpening the 5D3 provides similar accutance and higher peak resolution. It might be possible to post-sharpen FS100 footage to bring accutance up to GH2 levels.1 point
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1/50 vs 1/40 Shutter
Sean Cunningham reacted to Germy1979 for a topic
" that's the temporal, visual equivalent to having a girlfriend that always farts during sex. " ....Probably the best analogy....there ever was. Well played.1 point -
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Digital Bolex D16 cinema camera gets huge upgrade
BydrodoFieddy reacted to Sean Cunningham for a topic
Devices, not cameras. I'm not saying the Zoom is the best option, it's definitely good enough, as well as other purpose-built devices like it. It's completely r-tarded to be wasting engineering and space on advanced audio for a camera when that cost, that time, that extra potential for issues would be better spent on its true purpose. Single shooters can attach these compact recorders to their shoe on top. You actually complain that these compact recorders are trying to do too much yet you want to jam pro-level audio gear into a camera. This conversation is absurd.1 point -
Metabones Speed Booster review
BydrodoFieddy reacted to konjow for a topic
Why they wont do nikon electronic support.(focus IS etc) hmm useless till then...if ever...1 point