Ebrahim Saadawi said:
AvTvM said:
not sure why people think canon can easily do 4K video.
if Sony, Pany and others can do it, why should know-it-all-best Canon not be able to? Were in late 2016, not 2006.
Sony cannot do it. (in m3 discussion here). The Sony camera that has the same size and weight.
-A6300.
Which offers 4K video. Sony engineers were instructed by the marketing team to simply sensor to read full 4K and compress it to H.264 regardless of how the hardware can handle that amount of power. The hardware, cannot. The hardware fries up. Is that a story of a successful ''Sony can do 4K so why Canon don't?''.
No, Sony cannot. They have at most a beta experimental mode for 4K that cannot be used in any serious shooting, and the bigger problem is that whilst doing so, they made aweful 1080p. So with the belived almighty sony video champ, when yoy actually go out and shoot with it, you can't use 4K for it's un-managed heat generation, and the reliable mode is absolutely horrendous (they d90 video, a6000 HD is MUCH better). So you end up with a camera that can't shoot video!
-Panasonic and other m43s companies have much, smaller sensors. The GH4 video champ has a chip to read and write that's a quarter of a 5D size chip, yet people wonder why can panaonic do it and 5D can't. And even further, the panasonic takes a crop of that small sensor even further for 4K!
-The current examples shown by all camera manufacturers prove one thing: 4K is a major heat problem, proportional to sensor size and camera size/venting,
4K can be ok with a m43s 2.3x croo in a larg DSLR sized body. GH4
4K is NOT ok with a small mirrorless APS-C body. Sony proves that. And Canon publicly stated that the implementation of 4K is resrticted by heat management and we need to work on that (interview with Masaya Maedya almost a year before 5DIV was announced)
4K FF in a large 1DC/1Dx body is ok (ok meaning absolute, zero glith reliability).
Not so ok in small mirrorless cameras or DSLRs: (NIKON has to take an aps-c crop on the D5 (And it's a 1D size body). Sony has to take an APS-C crop also in the a7rii, (but keeps a very primitive line skipped FF 4k mode) and the cameras overheat seriously in 4k.
People ask why Sony 1'' rx1000 can do 4k and Canon g7x can't, don't realize it shoots 5 minutes and cools for 5 to 10 minutes to take another shot). Don't just compare a spec line, USE IT AND SEE IF IT WORKS.
Point is, if you look at all the world's camera manufacturers, 4K heat is a real crippling thing. And if you're a company that doesn't introduce a feature until it's 100% reliable, then you keep waiting and making technological advances to solve the problem, or simply make a side linr of 4K cameras with fans and active cooling.
****A worthy note. The ONLY company, in the ENTIRE world of video production, that could solve 4K problem coming off large chip in a small camera is wait for it,
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SAMSUNG!
NX1 takes a semi 8K sensor readout (!!!!!) (30.1 mp) and downscales it to 4K in-camera, in real time, Full APS-C sensor, zero cropm and compress to a demanding codec (h.264), all without giving a hint of failure even under Middle East frying weather. So hat's off to Samung for being the first company to do that. This capability (large sensor downscale to 4k and compress that huge data to HEVC or send out to HDMI at 4:2:2 is why cinema cameras are so large and require running fans and even water cooling, yet Samsung seems to have neated a weatger sealed tiny package that can do it! I think it's most likely due to their advanced technological know-how from phones and other devices?
This was just a piece of info.
Another piece of info, Canon will not make 4K video either crop or 4k unlss it's absolutely reliable and can be used just as is. Until then they'll continue pushing FULL HD cameras.
This is the only feature Canon is always accused of crippling but actually is not. They can't do it.
Do they cripple and withhold other features, ABSOLUTELY. I want Zebras and peaking in a large EVF in my M5 with dual slots and fast buffer to keep up with DPAF ecosystem. But no, Canon wants me to only take a smallish EVF without peaking and a single slow SD card slot. I want a full swivle LCD , but no, Canon wants me to get only small vertical movements. I want C-Log even at HD. But no, you don't get that. OK I want the XLR module of the XC15 to work on my m5 to shoot good HD video with high-end sound like Sony offers with their XLR module, but no, you only get a 3.5mm input with 2008 5d2 preamp noise. Lots of crippling is going on, but 4k isn't one of them.
Let's hope they don't cripple DR (by using the Rebel 24mp Hybrid AF III chip vs the 80D 24mp DPAF chip, which are similar but the later has a huge advantage in dynamic range and a good improvement in AF). Since this would be my landscape camera (with manual glass) and my social portrait camera (with the 50mm 1.8 STM) I really hope they go with the 80D chip so I could push up shadows better (a weakness of all my current Canon cameras, gorgeous mids and highs range but sea of red noise down there). I don't want to be facing that any more.
Something i would
really appreciate is a 50mm IS EF-M. Or any stabilized primes for that matter.
Because m3 has AWESOME electronic video stabilizstion that works magic, nothing like any electronic system I"ve seen, and when combined with an IS lens it's a mindblowing compensation for camera shake. You can make moving shots that would be impissible to do without enormous gear.
and most notably *way more expensive*. 
