Alpicat

The EOS M doesn't handle blown highlights very well in raw and you do sometimes get a flat pink (or pure white) colour in the blown out areas, and it's easy to get with harsh clipping sometimes with colourful moire appearing at the edges of the blown out areas. MlRAWviewer might make the problem worse - worth trying another program like MLV App to see if its still an issue? The way to get rid of the pink and hopefully bring back some information is clicking 'highlight recovery' in Resolve, but I'm not sure this necessarily works in every single case. If you want to go slightly further with highlight recovery, look at Juan Melara's tutorial on grading cdngs (for Blackmagic cameras but works for magic lantern raw): Great work though it's a shame about the moire. I guess this must be 720p mode because when shooting 1080p mp4's (with or without bitrate hack) I'm pretty certain you wouldn't get so much moire? Today I've tried the SD card overclock hack. It works and will post footage here soon.

@ntblowz @Timotheus I emailed Viltrox last week and they mentioned they're going to release a speedbooster for eosm in a few months - although I don't know when they'll announce that officially. Metabones previously also told me they were looking into designing one but were unable to discuss any details at all. Looks like you had your speedbooster modified to fit the M50 with electronic contacts? It looks great! Personally I look forward to using a speedbooster with the original eos m with magic lantern, especially now that it can do continuous raw recording at 2.5k resolution in crop mode with the sd card hack.

That's true - particularly in the examples above where grain has been added in post, but sometimes that look can be nice! If you want a modern and sharp but still pleasant looking image - with the new SD card overclock module the EOS M can record 2520x1072 raw continuously (using a 3.33x crop from 35mm full frame / approx 16mm size). The module is still very experimental so just waiting a bit longer until hopefully it will be easier to use! That's incredible, thanks so much for doing this and look forward to hearing more about your results! @Nikkor There are no pink dots when recording in lossless 10 or 12 bit raw, but they do still appear in all the other raw formats. In any case this isn't an issue any longer as modern mlv transcoding programs such as MLV App use a focus pixel map to automatically get rid of all the dots (without requiring chroma smoothing), so you won't even know they were ever there. However, the EOS M still can't do 1080p when shooting full sensor raw, it stays at 720p and therefore there's a huge amount of moire. They were looking to find a way around that issue but that didn't seem to go anywhere. Here's the thread about that: https://www.magiclantern.fm/forum/index.php?topic=16608.0 If you're recording full sensor, it's best to shoot regular h264 with the bitrate hack which is 1080p. The moire is still there but it's a bit more controllable. I'm able to set the h264 bitrate at 3x and with a Sandisk 95mb/s it seems stable.

@Matt Kieley thanks for posting your videos and the three others above, all really good. I never realised video on the EOS M could look this great without using crop mode, shows how useful the h264 bitrate hack is! When shooting raw without crop the amount of moire is extremely bad, and I'd assumed it was exactly the same with h264 video but that's definitely not the case, it's much more usable. I like this one from Ryan Moorman with the 4:3 aspect ratio:

The lumix 14-42mm mark II was my first lens with the BMPCC, which I used briefly before switching to a speedbooster. The stabilisation worked fine for me too, though there was no way of turning it off as there was no OIS switch on the lens itself. When panning the motion could get a bit jerky, depending on the way you panned. Here's a video I made with it (also using an Olympus 9mm f8 toy lens for wide shots), prores, with some post stabilisation: And this one exclusively with the 14-42mm:

Thanks, that's good to hear. Hopefully this adapter will appear soon. Would be amazing to use the BMPCC speedbooster, which in this case would provide an equivalent crop factor of 1.93x. Could be risky though as the EOS M has a mechanical shutter which might hit the back of that speedbooster but I suppose it's possible to shoot video without firing the shutter.

We're getting close to this capability on the EOS M. As mentioned in the main EOSHD magic lantern video thread, the magic lantern people found a way to hack the SD card writing speed on Canon cameras, which on the EOS M would mean being able to shoot at max 2520x1072 continuously in 12 bit lossless raw in 5x zoom mode (2.35:1 aspect ratio), as opposed to just 5 seconds max recording time. The crop factor at this resolution is 3.33x which is between 16mm and super16. With a speed booster, the crop factor would get pretty close to micro 4/3. Someone has already successfully used this SD card hack on their EOS M, although for now it remains very experimental and possibly dangerous for the SD card - see his forum post here: https://www.magiclantern.fm/forum/index.php?topic=12862.msg199939#msg199939 and his video shot at 2.5k below

I don't think they've been able to work out how to get higher resolutions than 720 vertical pixels to work properly when using the full aps-c sensor, due to the way the EOS M is designed, although they were trying find a way around that and they started having some success... but the video files so far resulted in a lot of corrupt frames. Here's the discussion about it: https://www.magiclantern.fm/forum/index.php?topic=16608.0 Perhaps MLVFS might be able to convert the files and read AWB properly? I believe it should now be able to work with lossless mlv files, however I don't know where to get the latest version of the program! With MLV App on Windows I can convert the MLVs to cdng without any issues (with the option to export uncompressed or lossless). Maybe try a previous build of the program to see if it works?

The two 1x1 crop modes I mentioned in my post above are the only ones available on the EOS M. There are no other crop mode. The 5x zoom mode or 3x crop (movie crop mode) are actually misleading labels, since they both do exactly the same thing (both record in 1x1 sensor crop mode - i.e. with 1:1 pixel interpolation). There's no difference between them apart from the max resolution you're allowed to record at. In fact those names only relate to how liveview previews the image for you. I think part of the confusion in crop numbers comes from the fact that the magic lantern menu always states crop factor in relation to 35mm full frame (i.e. same sensor size as Canon 5D), no matter which camera.... On the other hand, the "5x zoom mode" (a label that comes from the Canon EOS ecosystem) is in relation to the sensor size of that particular camera (in this case, the EOS M has an 1.6x crop aps-c sensor). So the real liveview crop factor when using 5x zoom mode on EOS M is actually 5 x 1.6 = 8x zoom, which is why liveview looks so zoomed in when selecting this mode. But as mentioned above, that's just the preview and it doesn't relate to what's being recorded. Do RJ do a focal reducer for the EOS M mount directly? I'd definitely be interested in getting one.

There are two options when filming in crop mode (also called 1x1 crop mode to avoid confusion): 1) There's "movie crop mode" (selectable from the magic lantern menu), which I keep referring to in my previous posts on this thread (see my "Destination Docklands" video on previous page for a demonstration of this mode). The max res is 1800x1024. There are no focus pixels if you shoot in 10 or 12 bit lossless raw. This is my favourite mode as it gives you pretty much the proper framing in liveview with a realtime preview, and the record times are generally reasonable at that resolution. 2) There's 5x zoom mode (selectable by pressing zoom twice on Canon's liveview touchscreen). This allows you to shoot at a higher max resolution of 2520x1080. In 10 bit lossless raw you get around 3 seconds of record time at this resolution, so it's not so convenient for most uses. Also liveview is zoomed in a fair amount, so the framing isn't right - though at least it's realtime. @Matt Kieley mentions there's a 3x crop + the 1.6x crop (from the aps-c sensor). That's correct and adds up to a 4.8x crop in comparison to 35mm full frame (i.e. 3 x 1.6 = 4.8). That applies to both crop modes mentioned above, but the exact crop factor will actually depend on the resolution you're shooting at, because 1x1 crop mode uses 1x1 pixel interpolation (there is no pixel binning). With movie crop mode at 1800x1024 resolution, the crop from 35mm full frame is 4.66x. With 5x zoom mode at 2520x1080 the crop is 3.33x I've just checked and there is indeed a 3x3 "crop mode". This is completely different to the 1x1 crop modes mentioned above! The "3x3" refers to the fact that the camera is doing 3x3 pixel binning. 3x3 crop mode allows you to shoot with the whole aps-c sensor width. To activate, you have to enable crop_rec module under the modules menu (using the experimental firmware). In the Canon menu you need to switch to 720p 50/60 fps recording. Then you can activate it in the magic lantern menu by selecting "crop mode". However, the video quality isn't very good. The difference between this 3x3 mode and the regular full aps-c recording mode (which apparently uses 3x5 pixel binning) seems marginal. I think there's slightly less moire. The max resolution is 1736x688 which gives you a 2.5:1 aspect ratio. The focus dots do make a comeback, but they can be removed with MLVapp.

I posted a comment on one of their youtube videos where they demonstrate the adapter: https://www.youtube.com/watch?v=GPseT8Ok3EA&lc= I think the only way to get close to a 3x crop (which is approx Super 16 size) is to increase the horizontal resolution to 2.5k (using 5x zoom mode). However at that resolution you only get about 3 seconds record time, and the vertical res is limited to 1080. The resolution I like to use with movie crop mode (1800x1024) gives you 4.66x crop which is a bit larger than super 8. It's closer to 1/1.7", same as the Pentax Q-S1 sensor. I actually emailed the metabones sales team last week about their plans to make a speed booster for the EOS M mount (since it would be useful for the Canon M50 too), and they say they plan to do it but can't provide further info at this stage. If they do make it, that would be one way of getting super 16mm field of view on the EOS M! Nice to hear MLV App reads the white balance properly for you. Did you change any settings in the program? On the PC version it always defaults to 6000k. With exposure I have the zebras set to LumaFast, over 99% which I think is the default - apart from that I judge exposure by eye. As long as I'm not blowing out highlights with this zebra setting, the image seems fine. In the Destination Docklands video I posted above, you can see instances of blown out highlights with harsh clipping where I shoot directly at the sun or backlit clouds (visible on the cover image). I could see the zebras in liveview when shooting that shot but it was impossible to avoid.

That's weird, it seems to work for me. Even when the magic lantern overlay is on liveview, I just press the Q Set physical button and from there I tap on the screen to choose different colour balance presets, which include AWB. I always leave my camera on AWB since it works very well. Very true. I've also checked with Fotodiox as they already make a Sony E-mount to M4/3 adapter, as do various other manufacturers. The Sony mount is very similar to the EOS M mount with the same flange focal distance so should be easy to produce an adadpter for EOS M to m4/3, even if it lacks electronic contacts. Fotodiox said they'd talk to the design team and see if they can make such an adapter.

Yes that's an issue with the MLV App. I hadn't noticed till recently. I export to cdng so it can be corrected in Resolve, but would still be nice to get the right colour temperature from the start. Hope they can find a way to fix this. Here's another video I shot for my music with the EOS M whilst travelling to BVE expo: 12 bit lossless raw, crop mode at 1800x1024, using the EF-M 15-45mm and a Pentax 6mm f1.2 c-mount lens which vignettes slightly:

Crop mode on the eos m has a area which is slightly larger than super 8mm, it's somewhere between 1/2" and 1/1.7" sensor size, depending on which resolution and aspect ratio you pick, so super 16 lenses would be fine on the eos m. For example, 1800x1024 resolution on eos m is a 4.66x crop from full frame, whilst super 16 is approx 3x crop. One of my no-brand adapters seems like your Fotodiox one, where the 6-66mm ends up exactly upside down. With this particular adapter I've been able to get closest to parfocal performance, so it's probably the best option for this lens. I made a video to test parfocal performance and vignetting in 16:9 and 4:3 aspect ratios, using this adapter. Movie crop mode records slightly off centre horizontally, so if you want 4:3 aspect ratio and are getting vignetting - you have to recentre the image in post... which I've done below in the 4:3 shots:

That's not bad! Wouldn't take much of a crop to get rid of the vignetting, though obviously going for a 4:3 ratio is the best option here.

I'm enjoying using magic lantern on the 50D, especially the crop mode. Only downside I'm still trying to work out is that liveview turns pink when you're in crop mode and hit record (with lens IS turned on), so focussing can be a bit tough. Other than that this camera is pretty amazing for video. Here's something I shot with my music, mostly 1920x1080 crop mode, with some shots using full sensor (1568x882). Lens: Canon 17-55mm f2.8. Unfortunately youtube compression does seem to make the image visibly softer than in the original file - I guess the snowfall doesn't help with compression!

There is a PL mount to EOS M adapter, but it's from MTF so it's expensive: https://www.srb-photographic.co.uk/pl-mount-to-canon-eos-m-mtf-camera-adaptor-9290-p.asp I don't know if there are cheaper alternatives. Funnily enough I was talking to the MTF guys at BVE expo yesterday asking them if they had an EOS M to M4/3 adapter! It would be great to use Micro 4/3 lenses or a BMPCC speed booster on the EOS M. Unfortunately no such adapter exists. For my Pentax 6mm f1.2 prime c-mount tv lens, I've just cut out a piece of paper and am using that as a shim (making the lens screw in less), which makes it slightly more usable. Without that, infinity focus and the lens distance markings are completely off with all my adapters. Thanks so much for testing this - good to know and may consider this lens in future if I have money! I don't imagine it would cover a 16:9 crop frame on the EOS M (which is approx 1800x1024) since that's a fair amount more than super 8 size, but if you're able to check at some point that would be useful.

I got my adapter from China, so it took a while to arrive, but seems to be out of stock now: https://www.miniinthebox.com/black-c-mount-cine-movie-lens-to-canon-eos-m-camera-lens-adapter-ring-cctv-lens_p927184.html The one they ended up sending me looks slightly different to the one in the photo. When I screw on the Schneider 6-66mm onto it, it aligns correctly - the internal horizontal plastic parts covering the top and bottom of the glass align horizontally, thus minimising the vignetting. I have another c-mount adapter where these internal plastic parts end up at an angle or near vertical when the lens is screwed in fully, causing a lot of vignetting. I'd recommend buying a couple of different adapters on ebay and hopefully one will work - all these adapters seem to vary so much! In any case I haven't been able to get completely parfocal performance on the Schneider zoom, the focus does seem to drift slightly at the wider end at open aperture as you mention - your theory about the flange distance being non-standard would definitely explain things. It would be nice to be able to do a back focus adjustment on this lens to fix that!

I don't think you need the experimental build to activate higher resolutions on EOS M, all you need to do is select the movie crop mode or use the 5x zoom mode and in theory you can select any resolution you like up to the 2.5k limit (or 1800x1030 limit in movie crop mode)- that applies to any build of magic lantern on EOS M. However the limitation on the standard build is that you're stuck with 14 bit uncompressed raw - and the data rate is so high that you can't go much further than 1280x720 if you want continuous recording on the standard build. For higher resolutions you need the experimental builds. The 10/12 bit experimental build still allows you to use the regular mlv_rec and sound modules I think, so you can record sound and shoot 10 bit uncompressed raw for example. That should be sufficient for you if you're aiming for 1408x1030. However if you want to get longer record times with higher resolutions, you'll need the "4K raw video recording; lossless compression" experimental build, and that only works with mlv_lite module - i.e. no sound. The experimental builds are here: https://builds.magiclantern.fm/experiments.html

The resolutions I've mentioned are the limit that magic lantern imposes on this particular camera - that's just the way they designed it. It might be because it would be unstable to go beyond, not sure. In any case, the limited card write speed (40 mb/s) plays a major factor in this limitation - with the higher resolutions you can only record a couple seconds of footage before the buffer fills up.

Using the full sensor you can't go beyond 1736x692 without cropping on the eos m, and it's not very usable given the amount of aliasing / moire unfortunately. Instead I'm using movie crop mode which allows you to record 1800x1024 with a 4.66x crop (from full frame). Using the 5x zoom mode you can shoot 1920x1080 (4.37x crop) and even up to 2.5k, but then you don't get the correct framing on liveview, it's very zoomed in.

Here's a very quick test I shot with a Schneider / Beaulieu Optivaron 6-66mm f1.8 super 8 lens. 12-bit lossless, continuous shooting at 1392x1028 resolution. You can't really go higher than this resolution without getting excessive vignetting, and 4:3 aspect ratio is definitely the way to go with this lens. Also here's a test with an EF-M 15-45mm stock lens, this time at 1792x1030 resolution. I wrote the music on ableton live for both these videos.

In the magic lantern menu, I'm using the "real-time preview" option under the Raw video options (selectable under the Preview options). This gives me the correct framing (including correct aspect ratio) in live view if I press the "info" button on the camera a couple times until the magic lantern overlay appears. Also Global draw has to be enabled - ensure that's switched on in the magic lantern menu. I'm doing this with the Movie crop mode enabled (i.e. the "600D style movie-crop mode"). If you try this with another crop mode, you won't get the correct framing.

The EF to EF-M focal reducer with electronic contacts in the ebay link may possibly be a modified Viltrox EF to Sony E-Mount speed booster. E-mount and EF-M have the same flange focal distance of 18mm, and the diameter of both mounts is fairly similar, so apparently it's possible to change the mounts over, with a bit of work. In terms of making the electronic contacts work, here's a guide on how to do it: https://***URL removed***/forums/thread/3941898#forum-post-59943832 I might look into doing this, but hoping Metabones will release an EF to EF-M adapter soon considering the increased interest in EOS M cameras. For the M50 with its 2.5x crop in 4k video it would be good to have a 0.64x XL speed booster to get aps-c crop, or a 0.58x BMPCC style speed booster. An alternative would be a EF-M to MFT adapter, which I've never been able to find. I imagine that's hard to make as it has to be 1.25mm thick, tough to fit the electronic connections in that space. However it would be nice to use smaller MFT lenses on the Canon M50, in combination with the 4k video crop, but also have the option to use an EF to MFT speed booster.

I had the same problem with MLVFS lossless compressed raw files from my EOS M - could only see noise. I think there's an updated version which supports lossless raw but couldn't find it. I'm now using a program called MLV App which works fine with lossless. It also allows you to batch convert the files directly from card into computer if you want it to (similar to mlvfs). I'm using the QTv0.13alpha version of the program: https://ilia3101.github.io/MLV-App/