A few months ago @regularfellow mentioned he'd put an anti-aliasing filter on his EOS M to get rid of the aliasing and moire. I managed to find a cheap one on ebay recently, so have tried the same thing. I got the Mosaic Engineering VAF-50D Optical Anti-Aliasing Filter for the Canon 50D.
I got round to making a video with it yesterday using mv1080p rewire mode (full sensor 3x3 line skipping), 14 bit lossless raw @ 1736x1158. It works fine, it doesn't get rid of the aliasing 100% - still there in extreme situations, but the reduction is substantial and youtube compression seems to get rid of it completely. I stuck the filter into an EF-M to EF adapter using sellotape. It's impossible to fit it directly in front of the sensor or in a Viltrox speedbooster as it's too large - I actually tried to fit it by cutting the filter's frame off, but the glass started cracking straight away so stopped that attempt immediately (you can see a crack in the photo below on the top right corner of the fulter, but it doesn't affect the image luckily).
This was shot using the 2nd May 2019 build from Danne.
I got round to making a video with it yesterday using mv1080p rewire mode (full sensor 3x3 line skipping), 14 bit lossless raw @ 1736x1158. It works fine, it doesn't get rid of the aliasing 100% - still there in extreme situations, but the reduction is substantial and youtube compression seems to get rid of it completely. I stuck the filter into an EF-M to EF adapter using sellotape. It's impossible to fit it directly in front of the sensor or in a Viltrox speedbooster as it's too large - I actually tried to fit it by cutting the filter's frame off, but the glass started cracking straight away so stopped that attempt immediately (you can see a crack in the photo below on the top right corner of the fulter, but it doesn't affect the image luckily).
This was shot using the 2nd May 2019 build from Danne.