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Tzedekh

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  1. I'm still a little confused by hybrid log gamma. Does shooting in HLG mode increase the dynamic range over that possible with V-LOG? If so, what is the GH5's DR with HLG?
  2. I don't understand the point in implementing an HDR mode if it doesn't capture any more than the 12 stops achievable with conventional means.
  3. Anyone know anything about the GH5's hybrid log-gamma HDR mode and how much, if at all, it extends dynamic range?
  4. ​Actually, Apertus experimented with raw over HDMI when developing the Axiom Beta.
  5. I'm sure it is the LTN4625A. I think Andrew meant that the new sensor has a 16:9 aspect ratio, as does UHD. The 4,608 x 2,592 resolution represents a 20% oversampling over 3,840 x 2,160.
  6. Geez, I wish camera companies would stop using the CMV12000. Unfortunately, at present there seems to be nothing better. If any sensor manufacturer is listening, we need a >4K global-shutter, ISO 2000 sensor with >14 stops of dynamic range and negligible fixed-pattern noise.
  7. The only thing I can think of is that there are three layers of pixels, each of which has 4.44 MP. The 2,052 x 2,166 array is then cropped to 2,048 x 2,160. Because the pixels are twice as wide as they are tall, the aspect ratio is the 1.89:1 DCI standard. The additional horizontal resolution may be achieved through something like pixel-shifting.
  8. I hate to be a Debbie Downer, but if the LS300's sensor is the AltaSens AL41410C, the dynamic range is theoretically only about 10 stops, and that's with a rolling shutter. As to whether the the 4K is 4:2:2, I suspect it is. JVC also announced the GW-SP100E remote head camera system, which seems to use the same sensor. Among the specs: "Up to 4K Ultra HD 50/60p recording at 4:2:2 150 Mbps" and "4K single file recording at 150 Mbps." I assume that if the GW-SP100E can record 60p 4:2:2 at 150 Mbps, the LS300, at 24/30p and 150 Mbps, is probably also doing 4:2:2. I suppose the latter spec means that JVC isn't using their goofy process of simultaneously recording to four SD cards, RAID-style, but is recording as a single file.
  9. I agree, but in all fairness, it's the same sensor that's in the AJA Cion and the BMD s35 4K cameras. Sadly, there's a paucity (and by that I mean a virtual absence) of off-the-shelf 4K sensors with decent dynamic range. A custom sensor could be designed and fabricated through a company like Alternative Vision, but it would cost two to four million dollars and likely take at least a year, and God only knows how good the results would be. Quality control and yields, yada yada. And then there's all the work that has to be done to write the code that makes the sensor usable.
  10. If you're willing to go a little smaller, the RX10 has built-in ND.
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