I found
this, which suggests that a DSLR can work OK when used in 640x480 crop mode at 60fps with 1:1 resolution.
Otherwise, video mode used the full pixel array then downsamples to 1080p, probably destroying any hope of good resolution.
Then there's the Bayer filter interfering with colour rendition and a low-pass filter.
It's beginning to sound like DSLRs are a compromise in every respect.
Anyhow, this is getting a long way off the topic of ED80s vs RC8 vs whatever as AP OTAs.