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Lars Steenhoff

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  1. Like
    Lars Steenhoff got a reaction from Kisaha in Blackmagic Pocket Cinema Camera 4K   
    https://www.kinotehnik.com/lcdvfbm5/
     
     

  2. Like
    Lars Steenhoff got a reaction from thephoenix in Blackmagic Pocket Cinema Camera 4K   
    https://www.kinotehnik.com/lcdvfbm5/
     
     

  3. Like
    Lars Steenhoff got a reaction from Video Hummus in Sigma FP   
    Held the camera at ibc today, really nice little camera with great specs.




  4. Like
    Lars Steenhoff got a reaction from Andrew Reid in Sigma FP   
    Held the camera at ibc today, really nice little camera with great specs.




  5. Like
    Lars Steenhoff got a reaction from ntblowz in Sigma FP   
    Held the camera at ibc today, really nice little camera with great specs.




  6. Like
    Lars Steenhoff got a reaction from Jonesy Jones in Sigma FP   
    Held the camera at ibc today, really nice little camera with great specs.




  7. Like
    Lars Steenhoff got a reaction from PolarStarArts in Canon EOS M6 Mark II   
    32.5mp APS-C Sensor
    DIGIC 8
    14fps
    RAW burst to 30fps
    Up to ISO 26500
    Eye detect AF
    AF capable down to -5 EV
    4K video
    FullHD at 120fps
    Removeable OLED viewfinder


    Read more: https://photorumors.com/2019/08/19/canon-eos-m6-mark-ii-and-canon-eos-90d-promo-videos-leaked-online/#ixzz5x552VOdJ
    What does 4k though image processing mean canon?
     

  8. Like
    Lars Steenhoff reacted to Geoff_L in Panasonic S1 V-LOG -- New image quality king of the hill   
    I read a lot about the pricing strategy of Panasonic, but isn't it related to the S1R which, if I am not wrong, is badly positioned price wise, regarding the A7iii or the Z7 ?
    Because here, in France, the S1 with the "kit" lens is cheaper than both the A7 iii and Esor R with their respective 24-105 (around 100€ less vs canon, and 150€ for Sony). The price was always around this since the beginning (and we had rebates for the 3 cameras). It may be the different in other countries, but here, at least, pricing is OK I believe.
  9. Like
    Lars Steenhoff reacted to Mokara in RED respond to Apple in compressed RAW patent battle   
    That depends on if it has been agreed to as a standard (the patent holder has to agree to this, some third party can't just decide to make it a standard). And even then you still have to pay the license fee, it only caveat on the patent holder being that they can't pick and choose who to license to.
    You don't have the right to demand access to patented technology unless you are the government.
    You can record RAW without infringement, as long as the compression used is under 6X. Anything from 0 to 5.9X compression would be fine.
    Another way to circumvent the RED patents is to record the different colors onto separate cards, essentially 4 files, one red, one blue and two green. These could then be compressed as much as you like (since they are separate videos). The user could then reconstitute the full color image in post. 
  10. Like
    Lars Steenhoff reacted to cpc in RED respond to Apple in compressed RAW patent battle   
    Without detracting from Graeme's work, it should be made clear that none of the algorithmic REDCODE specifics described in the text are non-trivial for "skilled artisans". I don't think any of this will hold in court as a significant innovation.
     
    A few notes:
    Re: "pre-emphasis curve" used to discard excessive whites and preserve blacks.
    Everyone here knows it very well, because every log curve does this. Panalog, s-log, Log-C, you name it, do that. In fact, non-linear curves are (and were) so widely used as a pre-compression step, that some camera companies manage to shoot themselves in the leg by applying them non-discriminatively even before entropy coding (where a pure log/power curve can be non-optimal).
    JPEG has been used since the early 90's to compress images. Practically all images compressed with JPEG were gamma encoded. Gamma encoding is a "simple power law curve". Anyone who has ever compressed a linear image knows what happens (not a pretty picture) to linear signal after a DCT or wavelet transfrom, followed by quantization. And there is nothing special, technically speaking, about raw -- it is linear signal in native camera space. But you don't need to look far for encoding alternatives: film has been around since the 19th century, it does a non-linear transform (more precisely, log with toe and shoulder) on the captured light.
    In an even more relevant connection, Cineform RAW was developed in 2005 and presented at NAB 2006. It uses a "pre-emphasis" non-linear curve (more precisely, a tunable log curve) to discard excessive whites and preserve blacks. You may also want to consult this blog post from [email protected] from 2007 about REDCODE and Cineform: http://cineform.blogspot.com/2007/09/10-bit-log-vs-12-bit-linear.html
     
    Re: "green average subtraction":
    Using nearby pixels for prediction/entropy reduction goes at least as far back as JPEG, which specifies 7 such predictors. In a Bayer mosaic, red and blue pixels will always neighbor a green pixel, hence using the brightness correlating green channel for prediction of red and blue channels is a tiny step.
     
    Re: using a Bayer sensor, as a an "unconventional avenue":
    The Dalsa Origin, presented at NAB 2003, and available for renting since 2006, was producing Bayer raw (uncompressed). The Arri Arriflex D-20, introduced in November 2005, was doing Bayer raw (uncompressed). Can't recall the SI-2K release year, but it was doing Bayer compressed raw (Cineform RAW, externally) in 2006.
     
  11. Like
    Lars Steenhoff got a reaction from Nikkor in RED respond to Apple in compressed RAW patent battle   
    What I can say about compressed raw is:  
    Stills cameras had a form of compressed raw already before Red made it version.
    https://www.photo.net/discuss/threads/raw-file-size-on-d70.95856/
    I used to have a Nikon D70 and the Raw files were compressed.
    So what I try to understand is what makes the compression on a series of stills at 24 frames per second so different than the single images?
    It is the same single compressed frame just more of them.
    So In my view the patent should not have been granted.  
    only the compression algorithm could perhaps have been awarded a patent.
    But if this was just a form of jpg2000 I don't see why they would even need to get a patent for that.
  12. Like
    Lars Steenhoff got a reaction from Geoff_L in Panasonic S1 V-LOG -- New image quality king of the hill   
    Yes the 95 mb card is working fine for me, although I would not mind having a faster card, because there seems to be a little delay when I want to playback a picture just after taking it, as it needs to write to the card. ( using RAW + JPG fine )
  13. Like
    Lars Steenhoff got a reaction from PannySVHS in RED respond to Apple in compressed RAW patent battle   
    What I can say about compressed raw is:  
    Stills cameras had a form of compressed raw already before Red made it version.
    https://www.photo.net/discuss/threads/raw-file-size-on-d70.95856/
    I used to have a Nikon D70 and the Raw files were compressed.
    So what I try to understand is what makes the compression on a series of stills at 24 frames per second so different than the single images?
    It is the same single compressed frame just more of them.
    So In my view the patent should not have been granted.  
    only the compression algorithm could perhaps have been awarded a patent.
    But if this was just a form of jpg2000 I don't see why they would even need to get a patent for that.
  14. Like
    Lars Steenhoff got a reaction from mercer in The End of Magic Lantern?   
    Canon is responsible for the security in the camera, you don't need to bring magic lantern into this because it has nothing to do with it. 
     
  15. Like
    Lars Steenhoff got a reaction from Mako Sports in 6K RAW is over-rated. Here's why...   
    It still useful for stabilising in post
  16. Like
    Lars Steenhoff got a reaction from tellure in 6K RAW is over-rated. Here's why...   
    It still useful for stabilising in post
  17. Like
    Lars Steenhoff got a reaction from maxmizer in 6K RAW is over-rated. Here's why...   
    It still useful for stabilising in post
  18. Haha
    Lars Steenhoff got a reaction from webrunner5 in Blackmagic to announce new camera related news at 12 noon PDT (8pm London)   
    6k Ef mount 😄
    need an new speedbooster
  19. Like
  20. Like
    Lars Steenhoff reacted to Geoff_L in Panasonic S1 V-LOG -- New image quality king of the hill   
    Andrew's video test ! Hope it was not a "supposed to be hidden before the article is online" video accidentally released 😄 Maybe M83's We Own The Sky Track plays a big role in the feeling, but I really really love the image !
     
  21. Like
    Lars Steenhoff got a reaction from Geoff_L in Panasonic S1 V-LOG -- New image quality king of the hill   
    CVP may have been under the assumtion that is was 3 letters, I mean 3 characters also work, but the max is 8 as you can see in my screenshot.
    More than 8 won't work.

  22. Thanks
    Lars Steenhoff got a reaction from Jimmy G in Panasonic S1 V-LOG -- New image quality king of the hill   
    CVP may have been under the assumtion that is was 3 letters, I mean 3 characters also work, but the max is 8 as you can see in my screenshot.
    More than 8 won't work.

  23. Thanks
    Lars Steenhoff got a reaction from Jimmy G in Panasonic S1 V-LOG -- New image quality king of the hill   
    some of those varicam names are too long, I tried them, no luck had to rename them to shorter ones.
    If you can make the long ones work without renaming I will take back everything I said on this topic.
     
    The good news is that they do work, because I have some of those loaded in the camera
  24. Thanks
    Lars Steenhoff got a reaction from Jimmy G in Panasonic S1 V-LOG -- New image quality king of the hill   
    8.3 filename for the luts
    so 8 characters plus 3 for the .vlt extension
  25. Thanks
    Lars Steenhoff got a reaction from Jimmy G in Panasonic S1 V-LOG -- New image quality king of the hill   
    https://www.dropbox.com/s/zea3apd5pscumks/FlowersV-log.mov?dl=0
    Anyone who wants to have a go at grading I have here the Flowers video in  v-log pro res 422 HQ
    No commercial use.
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