androidlad
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Everything posted by androidlad
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Source for this Atomos rep?
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X-Trans is a replacement of the standard Bayer filter array, not an overlay. It's very unlikely for ProRes RAW to support this special CFA used by just one manufacturer, it's even more unlikely for Fuji to open up their X-Trans tech to others.
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Someone over at DVXuser made a good point:
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The resolution could very likely be higher than 4K. As the camera has to send 6K Bayer data to Ninja V, then it's subsampled to lower resolution.
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Nikon Z6 / Z7 to go RAW with Atomos Ninja V - could Panasonic be next?
androidlad replied to Andrew Reid's topic in Cameras
Not on Nikon Z as it caps at 30p. -
Nikon Z6 / Z7 to go RAW with Atomos Ninja V - could Panasonic be next?
androidlad replied to Andrew Reid's topic in Cameras
No he didn't mean that. What he actually said was "We do up to 4Kp60, this camera does 30, HDMI would be capable of 60". -
For high speed readout one has to sacrifice quality. The 4K 120p is 10bit ADC readout, which is very very low precision and high noise floor.
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Fuji rear LCD has higher contrast than Canon, but lower resolution. If you punch in to check focus, does a slight resolution difference matter?
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They drop the bitdepth at the time of sensor readout. Sony sensors can use 10/11/12/14bit readout for video, in the case of Nikon Z6/Z7 they only operate at 12bit for video.
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It's the same sensor as P4K, Terra 4K, GH5s, E2 but with Quad Bayer unlocked to output 8K. Because the pixel size is 4 times smaller, Sony's dual Correlated Double Sampling actually achieves much better SNR due to reduced Full Well Capacity. So the resulting 8K image has similar noise performance with all the above cameras.
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Why is 10bit expected? The sensor readout drive operates in 12bit in video mode. To output Bayer RAW it has to stay at the same readout bitdepth, because you can't downscale RAW data to a lower bitdepth RAW.
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Nikon Z6 / Z7 to go RAW with Atomos Ninja V - could Panasonic be next?
androidlad replied to Andrew Reid's topic in Cameras
To me personally, it can be called RAW as long as it records Bayer data, I don't mind lossy compression, and the compression is usually visually lossless. Unless you're doing Avengers Infinity War level VFX, you don't need uncompressed/lossless RAW. -
Nikon Z6 / Z7 to go RAW with Atomos Ninja V - could Panasonic be next?
androidlad replied to Andrew Reid's topic in Cameras
https://www.smallrig.com/smallrig-cage-for-nikon-z6-nikon-z7-camera-2243.html -
Yep, it's the Sony 40MP M4/3 sensor, basically a variant of the GH5s/E2 sensor with its Quad Bayer array unlocked.
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Nikon Z6 features 4K N-LOG, 10bit HDMI output and 120fps 1080p
androidlad replied to Andrew Reid's topic in Cameras
The numbers are exactly the same as A7R III. Nikon is literally using the same preset readout drive mode in that Sony sensor, IMX251. -
I wanna see your dance moves that tear apart the show floor.
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Nikon Z6 features 4K N-LOG, 10bit HDMI output and 120fps 1080p
androidlad replied to Andrew Reid's topic in Cameras
Let's not get too optimistic. Offering RAW output does not mean bypassing the underlying sensor readout drive limitations (sub-LVDS 12bit readout). -
Depends on your experience and skill level. A lot of people struggle with just operating the gimbal, let alone pulling focus while operating it.
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Sony A7Riii Chroma Noise & Artifacts in Landscapes??
androidlad replied to Snowbro's topic in Cameras
Excuse me but are you trolling? That A7R III sample (from Imaging Resource) was shot at ISO2500, f/16, 1/30s. Obviously severely underexposed and you complain about noise when pushing the shadow? Typical landscape photography always use base ISO. -
SWIT CM-55C, it's the only low cost one with both 3D LUT and waveform. I also heard that a firmware update is coming end of this month for more features.
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Nikon Z6 features 4K N-LOG, 10bit HDMI output and 120fps 1080p
androidlad replied to Andrew Reid's topic in Cameras
Log profiles basically underexpose the sensor and do a digital push off-chip, PDAF pixels do not get enough light to work reliably, and this is worsened by the already dimly lit scene. -
Speedboosters for EOS R have already arrived: https://***URL removed***/news/2829581749/kipon-adds-nikon-z-and-canon-r-mounts-to-medium-format-lens-adapter-range Baveyes Hasselblad V-EOS R 0.7x Baveyes MAMIYA645-EOS R 0.7x Baveyes Pentax67-EOS R 0.7x Baveyes Pentax645-EOS R 0.7x However they are NOT designed for the 4K video crop though, they cover full frame sensor. A SB just for 4K video is extremely unlikely.
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HLG can be either 10bit or 12bit per BT.2100 standard. X-T3 is BT.2100 compliant and can only record using HEVC codec when HLG mode is selected. Since HLG is an open standard, Sony decided to deviate from the standard and used 8bit encoding, along with various HLG curves.
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Everything about HLG (and PQ) is in that whitepaper, it delineates both the OETF and EOTF that underpin HLG as a system.