Doubtful, the write speed so far has been only 45ish mbps, for 4k raw, it would be only able to write 20-30 frames before buffer fills up and drops frames. Where have you seen tests on the 6D Mark II where the write speeds are only 45mb/s? The card slot is supports UHS-1, giving speeds up to 90mb/s IIRC. I'm not aware of any tests being done on 2.) Double check that you are running v1.1.1 firmware. 3.) One more time make sure that you are running v1.1.1 firmware! 4.) Charge battery to 100% and remove any battery grip for the install procedure. 5.) Download the zip file from the link below, unzip all of the files to your CF card. The 5D mark iii didn't support UHS-I and was limited to 133x (20MB/s), which is why it is so important to use CF cards. The 6D was released later and supported UHS-I, and card tests at the time showed many cards transferring at 35-36 MB/s. of the Magic Lantern custom firmware for 5D Mark II (and other Canon cameras). This functions as an add-on to the Canon firmware and adds impressive features, such as. - Focus peaking. - Zooming a part of the image in a window to check focus. - Timelapse. Find all the links here: http://www.learningdslrvideo.com/magic-lantern-raw-5d-mark-iii/ When I choose External Speedlite control/ Flash function settings on the 5D. I get a dialogue that says . This menu cannot be displayed. Incompatible flash or flash's power is turned off. Flash is on. If I take a photo, flash fire's. Pictures are ALWAYS over exposed when using the flash. Does the 580EX II work with the 5D Mark III? A tutorial on how to create a focus stacked image using Magic Lantern for Canon DSLRs including a brief overview of a post production technique using Lightro Magic Lantern firmware introduction from Trammell Hudson on Vimeo. I've released a custom firmware for the Canon 5D Mark II that adds lots of new features that are missing for film makers. .

magic lantern 5d mark ii features