Forgive me for jumping in on this thread, but my question is right in line with this.
Regarding choosing a practical standard CoC for the sake of convenience (e.g., 0.025mm for 35mm, 0.0127mm for 16mm), what would be a sound choice for a 2/3" sensor at 16:9 HD or 1.89:1 2k, under similar intended viewing circumstances? Is it safe to calculate a CoC using the d/1500 or d/1730 formulae one sees online (where d = size of diagonal of sensor)? So, 2/3" sensor at 9.6mm x 5.4mm has a diagonal of 11mm, yielding a CoC of 0.007mm by the first formula & 0.006 by the second. Or would something else be more appropriate?
By the way, f/Calc at http://fcalc.net/ seems like a pretty good DoF, Hyperfocal, f-stop difference, etc. calculator. Have a look.
