Suggest full-res + downscale for true HD images?

[geerlingguy]

Check out this comment thread on reddit: https://www.reddit.com/r/raspberry_pi/comments/5za7hv/raspberry_pi_zero_w_as_a_headless_timelapse_camera/dewzjve/

In it, /u/XBrav suggests using a higher resolution and downscaling, then cropping, if you want the best HD footage possible (since the sensor mode for 1080p doesn't do any pixel binning).

This might be a good option to try to have by default.

Maybe set things up so if the resolution is 1920x1080, either images are just automatically captured full res and downscaled after, or there's a post-capture pipeline for each image that downscales it on the fly (the latter might not be effective on a slow Pi Zero/W!).