jrista said:LetTheRightLensIn said:Ebrahim Saadawi said:jrista said:Ebrahim Saadawi said:Even if it has the 70D sensor (which it may not), this does not necessarily mean similar video quality, it's all about the processing.
They claim that DIGIC 6 is capable of making ISO 1600 in video look like ISO 400, or a two-stop reduction in noise:
http://usa.canon.com/cusa/consumer/standard_display/digic_6_image_quality
Wow that's a BIG claim from Canon's part! If that actually materializes into the 7D video being two stops ahead of the 70D in low-light, that would be huge in the video world. That's way ahead of all the competition. I also can't imagine they will do line-skipping with moire and aliasing as on the 70D, if they did, it would be a clear sign from Canon for abandoning the filmmaking market.
I absolutely don't need a 4K camera. I just want it to be a great 1080p camera, with C100-like detail and high ISO noise, and with NO moire & aliasing as on the 5D mk III. Perhaps this will also have Clean HDMI out with mirroring like the 5D mk III. It seems to have a headphone jack (finally!) like the 5D III too. DPAF is a great addition for filmmakers. Just hope they give a great 1080p image. This will be my deciding factor of sticking with the Canon ecosystem or jumping to the A7s/GH4 crowd.
I think that is actually very worrisome. Canon video already looks waxy and loses detail anywhere there is not extreme contrast differences. So if D6 just ups the wax works even more.... YECH!!!!
Now if they avoid line skipping, that could give it a REAL 2 stop SNR advantage for video over the 7D (just as the 5D3 has like 2 stops better SNR compared to the 5D2 for video). I do expect it to have that, so it should have 2 real stops better SNR than the 7D for video.
But the wax works stuff scares me and I could see even a 4k offering using so much over-processing that areas of modest contrast might hold less fine texture and detail than ML 1080p RAW from 5D3.
I don't know where the wax works comes from in Canon sensors. That is probably the biggest single difference in sensor IQ overall that I see between Canon camera and the competition (including Toshiba sensors). This isn't even a DR thing...it's just a basic IQ thing. Even the 5D III seems to have a bit of the waxworks. You can ultimately process it out, but it is more work. I don't know if that's due to Canon's overall imaging pipeline architecture, with ADCs off-die, or something else. Either way...I'm not sure that DIGIC 6 is the cause...it's been in the 7D (DIGIC 4) and 5D III (DIGIC 5), so it is probably something else.
It's either that DIGIC chips simply stink at image processing, the Canon team has decided to turn up all sorts of stupid anti-grain/anti-noise tech and turns even ISO100 video into wax works when simpky using different settings could avoid it, or marketing has them apply some sort of gaussian filter to make it not look like their 1DC and Cxx and such video.
All I know is if you use ML RAW which bypasses almost all processing, the video quality in the 5D3 is suddenly WORLDS better, it has tons and tons more detail and even has more DR as well. ML SAVED the 5D3 for video. It took it from a nice improvement (2 stops better and not much aliasing) but all the same waxy and low in detail in a disappointing manner into able to provide some really impressive 1080p video and that made the 5D3 a video beast. Without ML though....
It is not the compression stage, since the new firmware that allows for uncompressed, but processed video on the 5D3 provides barely any image quality improvement at all.
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