Eos M Magic Lantern
Bought a 2nd hand EOS-M to practice my video. Installed Magic Lantern and C-log to turned this little camera into a very capable video camera. Camera Canon EOS-M.
There are 3 performance classes of Canon camera for raw video. Which should you use and what image quality can you expect?Raw video has a large data rate especially in 14bit, so the speed at which the cameras can write to the card is the main factor determining resolution.Magic Lantern have now implemented 12bit and 10bit raw recording which decreases the date rate and acts as a form of raw compression.Of the current cameras the 5D Mark III is the most capable especially for uncompressed 14bit shooting, but it’s also the most expensive for upwards of £1500 used. The 7D is the best value for money at £350 used and the 70D being unique for being the only one with Dual Pixel AF, for a bargain used price of £550. The 70D also has another advantage over the 5D Mark III and 7D, in that it has an articulated screen. The best cheap cameras are the 700D and 100D / SL1 at approx. £250-300 used.The information on this page was put together using personal experience of owning the cameras and the superb to fill in the gaps in my memory.
Eos M Magic Lantern Forum
Class 1 – Fast cameras (Compact Flash 1000x). 5D Mark III (85MB/s). 5D Mark II (75MB/s). 7D (80MB/s). 50D (70MB/s)Class 2 – Mid-range cameras (40MB/s SDHC class 10). 6D.
70D. 700D. 100D. 650D. EOS M-1Class 3 – Slow cameras (older 20MB/s SD card controller). 60D. 600D.
550D. 500D. 1100DMaximum recording resolutions and crop factorsCanon cameras have a 100MB to 275MB size buffer for recording raw images. The EOS M has the smallest buffer, the 5D Mark III the largest.Regardless of the speed of the camera writing to the card, you can get a few seconds (usually up to 5 seconds) of raw video to into buffer memory before it fills up.After it fills up, the card must keep up with the size of the recording, otherwise the camera chokes and stops.On the 100D which has a small 124MB buffer, you can get 6 seconds of 14bit RAW video at 1728 x 864, but it’s not realistic for mosts shoots to work like this.