How to get a proper crop_rec 1080p48 preview?

[kaco]

Hi!

Thank you everyone involved in development of ML, I am shooting raw since the very beginning it came out (www.vankusik.com, www.kacofilms.com). Almost every week I shoot approx 2-5 Tb of data.

Squeezed 48p is still great, but the resolution is not much.

I would love to switch to crop_rec 48p 3x3 binning, only not sure how you work with the preview? With the BW low resolution preview in is really hard to focus.

Is there any chance to port this new module to 5D3 FW 1.2.1 and then use HDMI viewfinder? And then ultimately hack the HDMI feed with some red cross when not recording (Since I experience frame skipped from time to time, it would be great to know from the feed if the camera is recording or not).

Thanks!