Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Topics - alpicat

Pages: [1]
1
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.


2
Share Your Videos / EOS M - Full frame raw with Viltrox speed booster
« on: December 05, 2018, 03:48:33 PM »
I finally received the Viltrox speed booster for my EOS M, which means it's now an ultra cheap full frame raw video camera (£120 for the speed booster + £100 for the camera 2nd hand)!
Here's my first footage using the whole sensor area. 


Resolution is 1736x1042 (14-bit lossless raw) in 3x3 mv1080p mode. The speed booster provides 0.71x magnification which gives the EOS M a 1.14x crop compared to 35mm full frame. Lens used - Tamron adaptall 35-70mm f3.5. Didn't need to use the SD US overclock card hack as at this resolution the record times are fairly good. Also I forgot to remove the focus pixels on MLVapp.

3
Here's a new test I've done using @Danne's May 23rd build with the SD UHS overclock hack module on the EOS M.

Recording 2520x1080 resolution 12-bit lossless raw, using a Sandisk Extreme Pro 95mb/s 64gb SD card. The max write speed I'm getting in benchmarks with this card is 55mb/s. Recording time varies a lot depending on what's in the frame (high contrast and highlights shortens recording time considerably). With a higher max write speed I'm sure recording times would be continuous at 12 bit.

This was recorded during warm weather of around 26 degrees C. I didn't let my camera get above 42 degrees C.

See this thread for more info about this module: https://www.magiclantern.fm/forum/index.php?topic=12862.0


Pages: [1]