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sudopera

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    DJI X5R - Footage

    In: Cameras

    Posted

    16 minutes ago, IronFilm said:

    Does the X5R share the same sensor as the GH4? I thought the X5 does???? And the X5R is the same as the X5... but with raw?? Or I could be completely wrong here.... (but I know it is true with the Yuneec drone camera)

    I'm not sure but I guess so.

    Article on DPReview says that X5R has the same sensor as X5.

    http://***URL removed***/articles/4506017808/to-the-skies-dji-launches-zenmuse-x5-and-x5r-4k-micro-four-thirds-aerial-cameras

    Time to step up - Panasonic GH5 must go 6K Super 35mm to compete in 2016

    In: Cameras

    Posted

    Just now, cantsin said:

    Here's my 2 cents: I think it's completely unrealistic because all existing M43 lenses would not cover that sensor. It would be too expensive and logistically too complex (think production lines, warehousing, retail shelving) for Panasonic introduce an entirely new line of APS C-covering M43 mount lenses. They would be too expensive to develop, to difficult to market, create a lot of confusion among consumers, and would mean that Panasonic would have to give up some of the compact size advantages of M43 lenses. The alternative, that Panasonic wouldn't create any native APS-C lenses itself, but offer the APS-C option only for people who adapt third party lenses, would be business suicide, since the whole point of an interchangeable lens camera system is that people buy your lenses. 

    Well the thing that I understood from this article is that you would still be able to use regular M43 lenses on this camera with readout from the smaller region of the sensor, so I don't see your point here.

    Time to step up - Panasonic GH5 must go 6K Super 35mm to compete in 2016

    In: Cameras

    Posted

    I don't see why those specs that Andrew mentioned should be so unrealistic, to me it would be even logical because that way Panasonic could differentiate GH and GX lines more. GX for photography purists that want to shoot decent video from time to time and GH the other way around. Right now those two lines have almost the same features with different styled bodies, what is the point in that in this overcrowded market? I think it is clear now that GH cameras are recognised more in the market as video tools, so for me it is only logical to give priority to video specs in the next model.

    Also who says that Panasonic couldn't ask much more then before for a camera with those specs, if it was priced around 2500$ it would be on the top of my list.

     

    Panasonics new Cinema Camera? - Announcement today

    In: Cameras

    Posted

    If they just made a proper MFT camera with 12MP sensor(bigger pixels) so the crop is exactly 2x from FF at true 17:9 4K, good at 1600 ISO, keeps the ratios for anamorphic from GH4, at least 12 stops of DR with a better implementation of V-log L, color science from Varicam, 4K 30p(being realistic but would like more) and HD 120p, 10bit 422 AVC for all flavours with decent bitrate, ND with 3 or more strengths, 2 XLR-s for audio, SD cards, ergonomic body similar to FS5 and priced around 3500-4500$/€. Add a XL Speedbooster and the crop factor becomes 1.3 APS-H.
    Keeping the MFT sensor they wouldn't canibalise their own lenses and could even make one MFT servo zoom for run&gun, maybe 12-50 f2.8.
    I believe many would jump from the likes of C100 II.

    With these specs, I'm not sure that I would even consider anything else that is offered now in that price range.

    1dx mark ii, 4k 60fps?

    In: Cameras

    Posted

    MJPEG is 8-bit DCT compressed frames, one after another. ProRes is 10-12 bit DCT compressed frames, one after another. Mathematically, they are very similar, both effectively providing JPG-like frames (with no interframe interpolation). ProRes has faster encoders/decoders, however they're not that fast compared to modern H.264 ALL-I codecs, which have both faster encode/decode (with HW) and are also more efficient.

    As others have noted, the reason MJPEG is being used is likely cost, and perhaps to differentiate from the C line. Our C300 II does have a fan, however it can be set up to shut off during filming.

    The fact that the NX1 can do 4K H.265 (without a fan?) means that perhaps some licensing would help with Canon's in-house tech deficit.

    And my real thanks to you

    1dx mark ii, 4k 60fps?

    In: Cameras

    Posted

    Speaking from my 1D C experience...

    MJPEG is 500Mbit/s so the data rate for the CPU to handle is insane. Editing off an SSD or RAID 0 like I do the drives aren't a bottle neck, it's the CPU.

    What compounds the problem is that MJPEG doesn't seem to be well supported with hardware acceleration.

    The Mercury Engine in Premiere for instance seems to revert to software rather than hardware accelerated by Open CL or CUDA when it comes to MJPEG.

    H.264 and H.265 may be more complex with the clever compression but it is hardware accelerated.

    You will effectivly be editing MJPEG 4K 60fps at 800Mbit/s in software mode, on the CPU only. The effects will take ages to render too.

    1D C 4K 24p is 500Mbit/s (same on 1D X Mark II)... this is tough enough, you really need to transcode to ProRes.

    Again speaking from direct experience with the files, the H.264 4K from the GH4 and A7S II can be edited natively on my machine in Premiere with smooth playback especially at 1/2 res in the timeline monitor. MJPEG doesn't even play back smoothly when I reduce the playback res, which again points to the lack of proper support of such an old dated codec in a modern NLE.

    Canon have made a mistake.

    A bit off topic, but this whole MJPEG editing issue is a little bit strange to me because I think ProRes is actualy some form of the same, but I'm not sure.

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