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If the card's not formatted exfat you can only write up to 4Gb per recording. Best to format your cards exfat to determine whether that's the issue. I'm still using yosemite as my main system, exfat formatting works. Alternatively, you could try an earlier build.

Nope, never. Is it happening on recordings under 4Gb? What's the date of the build you're using?

Well no one clearly. As for the rest of your post: If you're gonna masturbate, don't do it in public.

They are being tested, but they're quite buggy. I sold my A7s too, the MK3 raw is so much better.

Actually, looks like rolling shutter is a bit higher: 1080p 24p standard 1x crop raw is 18ms. 3K 16:9 is 31.9ms according to ML. a1ex may be able to reduce that a bit if and when he enables FPS override.

3K 24p rolling shutter is about the same as 1080p, <20ms

Na, I'm still using CC 2014 for that very reason.

They're doing a pissy update after 4 years. LOL. So glad I decided against getting the trash can and bought a second hand 2010 6 core 333Ghz tower. I put a GTX 980, 12 terabyte raid 5, and 2x terabyte SSDs in it. It screams, and cost me half what the trash can and external raid array would've cost. My only regret is that I should've spent a bit more on a 12 core, After Effects rendering is CPU based. The trash can is cool, but it should've been introduced in addition to the towers.

The crop factor reduces as you increase the resolution. Select 3x crop. Click the trash button to get out of the ML menu. Click it again to get back into the menu. Go into the raw video menu. Select aspect ratio. Use the joystick thingy to scale up the resolution. You'll see the crop factor when you click out of the aspect ratio screen.

Focus is a bit off, but this is 3K scaled down to 2K @ 1600 ISO. If you wanna know what the noise pattern looks like just look at any raw 5D MK3 photo. Things tend to get pretty noisy about 1600 ISO, that's where the digital gain kicks in, but with the right exposure up to 6400 ISO is doable.

I did some tests: I shot standard 1080p raw vs 2.8K raw at the same ISO and aperture, taking a few steps to get close to the same framing; the 1:1 2.8K crop appears to be about half a stop brighter than the 3x3 binned 1080p. Somebody else might wanna test that to confirm.

Yeah if a1ex gets the live view sorted out. Pixel binned 1080p is a little softer than I'd like. 2.7K gives a little bit of wiggle room for the softness of the Iscoramas, and for denoising. Also the crop means I can shoot the low light stuff at lower ISOs, which is cool. I've already got my eye on that new Sigma 14mm f/1.8; that plus a Sigma 18-35mm will cover the wide end nicely. Audio's no problem, I've got a clapper board, and I dual system record anyway. Plus ML can beep at the start of a recording. I think ML will incorporate audio in time, I've just asked about whether they can include card spanning into the build, that would give us another 20MB/s to an SD card

Well I've got an ultra-wide lens so I can still get a 20mm equivalent FOV so that's not an issue. Loss of sensitivity? I don't see any. Noise wise for an equal FOV and DOF to full frame you're shooting at f/2.8 100 ISO instead of f/5.6 400 ISO, so I don't see how it could be noisier. You are zoomed in on the noise though, but to my eyes it's the lesser of two evils. It's definitely worth it for the extra detail, it's now has the resolution of an Alexa!

It's slightly faster.

I tried my Lexar 1066x card, it's a little faster than the Toshiba. 3K 2.39:1 is repeatable at 100 ISO. I had to go back to 2.7-2.8K at 1600 ISO. That works for me, I'll shoot 3K 100 ISO for wide outdoor establishing shots, 2.7K for everything else, and render to 2K scope.

You've used ML on the 50D so it shouldn't be a problem. Use the raw histogram and the ETTR hint. I have my LCD brightness 1 notch from the minimum setting which gives a good exposure preview for ETTR shooting. You can use shutter fine tuning to get a 180 degree shutter. Set FPS to exact. If you're using an external monitor you may have to switch the camera on before you turn on the monitor.

14bit lossless works on any resolution. I've been using a Toshiba 1066x.

What cards are you using?

100 ISO - black screen ~49% 6400 ISO - black screen ~60% 6400 ISO - busy scene, fast movement ~69% Explains why you're getting 3K and I'm getting 2.7-2.8K, I've mostly been shooting at between 1500 and 6000 ISO 2.7K scope 14bit lossless. Debayered in ACR, graded in AE with filmconvert. Rendered to 1080p. Sigma 20mm f/1.8 @ f/2.8 1500 ISO

The lossless compression isn't a fixed ratio, it varies; the highest I've seen it is 51%, the lowest was about 80%. The way it works is you have to go into the crop mode menu to select the sensor crop, 3K, UHD, etc, then you have to go into the regular raw video menu to select the resolution you want to record. 10bit @ 2.7K 2.39:1 is around 90MB/s, roughly the same as 14bit lossless. As I said, there is no 4K 24p recording, just a 4K sensor crop which no available CF card can record, the media is just too slow to write that much data. I've recorded up to 3.3K 2.39:1, but because the compression size varies you can't expect to record every single shot at 3.3K. I'm trying to figure out what resolution it will do 95-100% of the time, so far around 2.7K 2.39:1 24p with a 2.1x crop is pretty solid.

You should mention in your article that there's no CF card that's fast enough to record 4K 24p 14bit lossless, somebody might buy a 5D Mk3 thinking they can. The highest resolution I can record continuously is 3.3K 2.39:1, but continuous doesn't mean endlessly repeatable. The lossless compression needs a bit of headroom, so 2.7-2.8K is a more realistic repeatable recording target. I don't know what the situation is with lossless compression for 10 and 12bit, that would certainly get us closer to 4K.

You can record around 3.3K scope: 2272x1364 with a 1.5x anamorphic lens; maybe a little higher, but best to leave some headroom for the lossless compression. Around 2.7-2.8K is looking like the ballpark for sustained 2.39:1 24p 14bit lossless shooting with a 2.05-2.1x crop. Higher than that isn't repeatable 100% of the time in my tests.

@hyalinejim did you shoot that with the 1st or 2nd build?

Great, you saved me the trouble. I'd rather spend my time looking for bugs than cutting and grading. If people wanna know what it looks like; it looks exactly like a 5D MK3 photo cropped to 3K, there's millions of those around. Are you having any issues with this: http://www.magiclantern.fm/forum/index.php?topic=19300.msg182227#msg182227

Use mlv_dump https://drive.google.com/file/d/0B-7nnVbwzGVkUmpHLW5kbEU3OWc/view This is the upper limit for continuous raw, beyond this you'll get x amount of frames before the buffer fills.