The Magic Lantern team made an announcement that they added 4Kraw video recording to Canon EOS 5D Mark III. Since the news was released on April 1st, it left us all wondering – can this be true? And a few days later, we realize that it apparently can. It’s still an early concept with some of its quirks, but it works and achieves what seemed impossible to achieve.
The latest update allows these new resolutions to the users of the 5D Mark III:
- 1920×960 @ 50p (both 1:1 crop and full-frame – 3×3 pixel binning)
- 1920×800 @ 60p (same as above)
- 1920×1080 @ 45p and 48p (3×3 binning) 1920×1920 @ 24p (1:1 square crop)
- 3072×1920 @ 24p (1:1 crop)
- 3840×1600 @ 24p (1:1 crop)
- 4096×2560 @ 12.5p (1:1 crop)
- 4096×1440 @ 25p (1:1 crop)
- Full-resolution LiveView: 5796×3870 at 7.4 fps (128ms rolling shutter).
Now, it’s worth noting that this concept is still a bit rough on the edges and there are bugs to be fixed. The team is working on improvements, but still advises you to test the update thoroughly before you use it for some serious work. These are the possible problems you may experience when using the build:
It feels quite buggy. I’m still hunting the issues one by one, but it’s hard, as Canon’s LiveView implementation is very complex, and our understanding on how it works is still very limited.
Write speeds are high. For example, 10-bit 4096×2500 at 15 fps requires 180 MB/s. 1080p45 should be a little more manageable at 111 MB/s.
Canon preview is broken in most modes; you need to use the grayscale preview in the raw recording module.
High-resolution modes (in particular, full-res LiveView) may cause trouble with memory management. This is very tricky to solve, as we only get 3 full-resolution buffers in LiveView, with restrictions on the order in which they must be freed, and lots of other quirks.
Since these settings were pushed to limit, the risk of corrupted frames is high. If it happens, decrease the vertical resolution a bit.
When refreshing LiveView settings, the camera might lock-up (no idea why). Pressing MENU twice appears to fix it.
If you decide to try out the latest mode, you can learn more about it on this link. As I said, it still needs some improvements, and Magic Lantern team is working on fixing the bugs. However, if you’re impatient to give it a try, you can download it here. Let us know how it works for you!
[via Planet 5D]