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Messages - mattcraigthomas

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General Chat / Re: Advice on Drone?
« on: April 16, 2019, 12:30:39 PM »
Sounds like an epic trip!

The DJI Mavic Air is probably the best all-rounder for the money. It’s far from perfect, but I’ve been pretty impressed with mine. Feel free to ask any questions you may have about it.

Camera-specific Development / Re: Canon 5D Mark IV
« on: April 21, 2017, 10:04:18 PM »
This is also worth a look at, if, like me, you're not especially keen on Canon's...implementation.

After researching, I concluded that James Miller's profile is probably better, and comes with LUTs I prefer the look of, although I have to admit I've yet to actually use it.


Using the Atomos promo link will make it a little cheaper:

Just a suggestion, in case no one else had thought of it, although I've no idea if it'd help!

If you want to really really reset the camera (unsure whether or not this would be referred to as a hard reset), pull the teeny tiny built in battery out for a few hours.

Teeny tiny screwdriver required :)

General Chat / Re: April Fools Day prank. Put it down or go with it?
« on: March 30, 2017, 07:47:11 PM »
Put it down. Please.

With respect, I think you’ve misunderstood me, dmilligan.

All I’m asking you to implement is an option to include the Adobe 200% scale metadata in the virtual CDNGs that MLVFS creates, so that the scaling can be done automatically as part of debayering with ACR, just as you have already done so with the (5÷3)x vertical scale applied to slow motion footage, although obviously that is not optional.

I really don’t think what I’m proposing is silly. If you need or want to scale from 1920 wide to 3840 wide, and you debayer with ACR through After Effects, surely this would be the best time of the post processing pipeline to do so, while you still have access to all the raw data?

Hi dmilligan,

I love MLVFS, been using it with total reliably for the past two years or so. Absolutely fantastic tool, thank you very much for all your hard work.

I'm particularly fond of the automatic (5÷3)x vertical scale of slow motion footage when processed through ACR; that was a brilliant discovery.

I'm as yet undecided about the merits of upscaling to UHD (there are arguments for and against that I won't go into here), but if we were to do it, it would best be done at the debayering stage, just as with the (5÷3)x desqueeze.

Would you please consider adding a 200% scale toggle to the options in the web GUI?

For those of us always shooting 1920 pixels across, this would (probably, maybe) give us the best possible 3840 pixel wide image for when mixing with natively shot higher resolution footage and/or finishing in UHD.

Much appreciated, thank you!

Raw Video / Re: What resolution and ratio do you use for 60fps in 5DMIII?
« on: January 19, 2017, 08:13:58 PM »
Sorry, but I have to disagree. It's in no way "the best solution".

Sure, you gain per-pixel sharpness by sampling 1:1, and it's super handy if you wanna turn your 100mm f/2.8 into a pseudo 300mm f/2.8. But the aspect ratio isn't even close to being a useable standard, you'd need a really bloody wide angle lens for anything close to resembling a wide shot, I'm assuming noise would be more visible and you totally lose the magic of the 'full frame look'. If I wanted to shoot with a 3x crop factor, I'd use a Blackmagic Micro Cinema Camera!  ;)

The full frame 3x3 binning implemented in the new crop mode is really interesting; I'd love to shoot 50p and 60p without the need to correct it. But with the resolution being what it is, you'd need to scale it up anyway, throwing away some of the width in the process, which also makes wide angles and framing more difficult, so it's really not practical!

Raw Video / Re: What resolution and ratio do you use for 60fps in 5DMIII?
« on: January 19, 2017, 04:13:11 PM »
It's not bad, just a little softer. It's definitely better suited to shallow depth of field, close up shots, with no hard, straight, diagonal lines in frame. I've only seen aliasing a couple of times, but that was in shots that perfectly contradict that advice!

Raw Video / Re: What resolution and ratio do you use for 60fps in 5DMIII?
« on: January 19, 2017, 01:49:03 PM »
It's either impossible, or maybe you can record for as little or as long as 3 seconds, but it can't be both!  ;)

5D3.123 firmware, August 24th 2016 build. Haven't had a chance to test the new January 2017 build yet. 14-bit MLV with sound. 'Global Draw' and 'RAW Zebras' on. 'Shutter fine-tuning' used to achieve 180º shutter for 60p recordings. Lexar 32GB/64GB 1000x CF, will eventually get the 256GB 1066x to make life easier!

In the Magic Lantern menu, I have the following selected:

Resolution - 1920x1080
Aspect Ratio - 16x9

In the Canon menu, I change 'Movie rec. size' and 'Video system' to select the frame rate I want. The above is true for 24p, 25p and 30p. By changing the Canon menu options to 50p and 60p, and nothing else, the Magic Lantern menu will now read:

Resolution - 1920x648
Aspect Ratio - 16x9

Once scaled vertically by (5÷3)x, that gives you an image with a pixel count of 1920x1080.

Unless I'm mistaken, that's the best possible 50p and 60p image you can get out of the 5D Mark III. I understand 3x3 binning has been enabled with the newer crop mode, although 50p and 60p is capped to crazy-wide!

I just ran some tests, this is what I got:

1920x648, 16x9 (makes 1920x1080) 50p: ~ 400 frames, 8 seconds real time, 16.5 seconds playback at 23.976p
1920x648, 16x9 (makes 1920x1080) 60p: ~ 250 frames, 4 seconds real time, 10 seconds playback at 23.976p

1920x576, 2:1 (makes 1920x960) 50p: ~ 700 frames, 14 seconds real time, 29 seconds playback at 23.976p
1920x576, 2:1 (makes 1920x960) 60p: ~ 300 frames, 5 seconds real time, 12.5 seconds playback at 23.976p

1920x490, 2.35:1 (makes 1920x817) 50p: ~ 3000 frames, 60 seconds real time, 125 seconds playback at 23.976p
1920x490, 2.35:1 (makes 1920x817) 60p: ~ 550 frames, 9 seconds real time, 22 seconds playback at 23.976p

Didn't bother testing 1920x482, 2.39:1 (makes 1920x803). Theoretically, a few more frames than above.

While we're on the subject, I really wish there was a 1920x480, 2.4:1 (makes 1920x800) option, ideally in both slow-mo and standard frame rates, please. There's really no such thing as "2.35:1" or "2.39:1". Most modern movies in that sort of aspect ratio are 1920x800, which is precisely 2.4:1. It may potentially offer a few more recorded frames per shot in slow-mo, and a few more seconds of footage on a card. But perhaps most importantly, 480x(5÷3) is exactly 800, resulting in a perfectly accurate vertical scale, just like 2:1 and 16x9. If any developers are reading this, I'd really appreciate this addition, thank you!  :)

Obviously these record times are nothing spectacular, and definitely make things difficult when the camera is mounted on a gimbal or when shooting live event stuff, although you could also drop the resolution too. But for me and what I shoot, it's perfectly workable!  :)

Raw Video / Re: What resolution and ratio do you use for 60fps in 5DMIII?
« on: January 18, 2017, 09:32:18 PM »
As am I. 50p and 60p at 1920 pixels wide is definitely possible with the 5D Mark III; I've been doing it for more than two and a half years.

Unless I'm missing the point, obviously the best aspect ratio is whatever matches or exceeds the height of your project, and the best resolution will always be the highest that allows you to record for as long as the shot requires.

Raw Video / Re: What resolution and ratio do you use for 60fps in 5DMIII?
« on: January 18, 2017, 06:12:41 PM »
Without exception, I aim to capture the highest quality digital negative possible. That means I'm always at 1920 pixels across, and adjust the aspect ratio to match or exceed the project height after the (5÷3)x vertical scale.

The only drawback is the short record times, especially if you're shooting for 1920x1080, but depending what you're shooting, that can be overcome with a little planning and good timing.

I'm looking forward to stepping down to 12-bit capture when it's integrated into the nightly builds, and hopefully lossless compressed too, as this should enable longer record times.

Amazing news, thank you very much!  :)

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