Question to A1ex,
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This has probably been discussed already but I couldn't find where. So, I apologize for asking.
The 3K/4K_crop_recording mode is fantastic since it provides high-resolution RAW video with superb quality and detail, however, it has one serious drawback. The crop factor imposes some serious restrictions on the lenses used and the videographer needs high-quality fast wide angle lenses to be able to compensate for it. These are expensive. On the other hand, if one films in-door at low light, excellent low-cost lenses like the 50/1,4 or 85/1,8 may become too long and unusable due to the crop factor.
I have been going through the first post of this thread as well as the explanation concerning 4K RAW recording on the Experimental page and there are two statements about the 5DMkIII that I got very interested in:
1) Continuous: 3072x1308 @ 24p, 1920x1080 @ 45p, 1920x960 @ 50p, 1920x800 @ 60p, 4096x2560 @ 8p, 5796x3870 @ 5p
2) Full-width LiveView - decrease vertical resolution in the crop_rec submenu, all the way to 5796x400 @ 48 fps

My question is:
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If the 5DMkIII can record in 4096x2560 @ 8 fps and 5796x400 @ 48 fps wouldn't it be possible to make it record at a more usable and higher than FHD resolution and 24 fps WITHOUT the crop factor or with a much smaller crop factor? This is possible already at 1920x1080 (FHD) resolution without aliasing. What about 3072x1728@24 fps or 4096x1744@24 fps for a limited time of course? Or maybe 2900x1812@24 fps for continuous recording?
Additional question:
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The maximum vertical resolution of the 7D in the 5x-magnification mode is 1200 pixels while it is only 1080 in the 100D. What restricts this number to 1080 in the 100D if both sensors are APS-C and have about the same pixel count?
Thank you in advance for your reply.