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Everything posted by androidlad

  1. https://www.dpreview.com/news/5298432342/judge-rules-dji-infringed-patent-recommends-ceasing-sales-and-imports-of-most-dji-drones
  2. Yeah but they cannot remove movement generated rolling shutter.
  3. The best software stabilisation is achieved by using gyroscope data and calibrating/compensating for rolling shutter. Steady XP does all of that and I think it's better than any EIS or IBIS, and it does not have that gimbal floaty look.
  4. Anamorphic mode should be 6:5 like Pocket 6K, to go up to 60P, the sensor needs to be cropped to 3728 x 3020. https://www.arri.com/en/learn-help/learn-help-camera-system/frequently-asked-questions/alexa-sxt-faq/why-6-5-i-thought-you-needed-4-3-for-anamorphic--41676
  5. https://www.cinema5d.com/steadxp-first-look-review-a-promising-camera-stabilization-system/
  6. Cameras don't just read the sensor then dump the data straight to the cards, do they? Noise floor can be lowered by noise reduction.
  7. The ADC bit-depth numbers you see (12, 14 or even 16) are quantisation accuracy, they themselves do not act as ceilings or floors. It's the SNR measurement threshold that sets the floor, the last few stops are always buried in noise, and noise reduction is an extremely effective way to increase SNR, especially in video mode due to the temporal nature. That's how they got more than 12 stops of DR from 12bit ADC. Current ALEXA sensors use 14bit ADC, but because the ADCs are off-chip, they themselves introduce a bit more noise than modern on-chip ones, so the camera's 16bit ISP does a b
  8. It's a purpose-built Panasonic sensor, it can output 8K 60P. When you don't have power and thermal and form-factor constraints, it's not hard to build something like this. But it's entirely something else when you try to miniaturise it into a consumer product, this sensor assembly alone consumes a whopping 10W power.
  9. BRAW is not really RAW in a conventional sense, it's partially debayered and processed. And there's absolutely noise reduction going on in BRAW, however BMD seem to have turned it down on 4.6K G2 vs G1 (12.1 stops in BRAW on G2 vs 12.6 on G1)
  10. In stills mode, they use 14bit ADC. In video mode it's 12bit, because to achieve video frame rate (at least 24fps), ADC bit-depth has to be dropped to increase speed.
  11. EOS R5 just passed global Bluetooth certification.
  12. Well there are actually RAW formats, ARRI and Canon uses 12bit logarithmic RAW encoding. In this case, ProRes RAW is designed to be linear.
  13. https://www.dpreview.com/news/1623284310/canon-releases-100-firmware-update-for-professional-stop-motion-photography It increase USB liveview output from 960x640 to 1920x1280.
  14. All the info is here:
  15. Yes obviously, those RAW formats are standard in MIPI CSI-2 interface protocol.
  16. https://www.engadget.com/raspberry-pi-12-megapixel-c-mount-camera-084145607.html It uses IMX477, a BSI & stacked 1/2.3" 12MP sensor. It's capable of full 12MP readout at 60fps with 10bit ADC, and 40fps with 12bit ADC. https://www.sony-semicon.co.jp/products/common/pdf/IMX477-AACK_Flyer.pdf
  17. Again, marketing BS. Sony uses DBI stacked sensor with DRAM, Samsung's 108MP sensor is not stacked (but Samsung does have stacked sensors), of course it's slower.
  18. NTSC 720x480 with 0.9091 PAR with the padding removed is 704x480, then converted to square pixel results in 640x480. Either keep it 640x480, or upscale with a dedicated upscaling tool to HD. This is the proper way to do it.
  19. Those drones with 1" sensor have 12bit ADC, so the noise level will be noticeably better. Mavic 2 Pro is a special case because the 4K is either heavily subsampled from 5.5K full width, or 1:1 sampled from the centre. Both of them amplify noise level.
  20. Mobile phone CMOS sensors are generally 10bit ADC only, for power consumption and speed.
  21. The multi-frame stacked photos reduce some noise.
  22. From an academic point of view, what you are doing is essentially "digital curation" (well, a ghetto version). You would want to preserve all of the "significant properties" of the digital objects and only "transform" the intended property, which in this case, is the resolution. That means square pixel, HD with original 4:3 aspect ratio (960x720 or 1440x1080, depending on how good the upscaling algorithm is). The frame rate should also remain unchanged.
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