on something I've been thinking about for a few weeks. When one shoots primes (85, 100 and 135) for portraits, does one ever consider choosing the f-stop which maximizes sharpness (i.e. MTF graphs) or comes close to it?
For example: (Source is from PhotoZone, so this is just for discussion sake)
85mm 1.2 the IQ "sharpness" reaches maximum at f4
85mm 1.8 the IQ "sharpness reaches maximum at f4
100mm 2.0 the IQ "sharpness" reaches maximum at f4
100mm 2.8 the IQ "sharpness" reaches maximum at f5.6
135mm 2.0 the IQ "sharpness" reaches maximum at f5.6
Granted by doing the above method, I realize one sacrifices bokeh for IQ. Anyone with thoughts on this? Do many others shoot primes wide open for portraits?
Thanks for taking the time to read this!
For example: (Source is from PhotoZone, so this is just for discussion sake)
85mm 1.2 the IQ "sharpness" reaches maximum at f4
85mm 1.8 the IQ "sharpness reaches maximum at f4
100mm 2.0 the IQ "sharpness" reaches maximum at f4
100mm 2.8 the IQ "sharpness" reaches maximum at f5.6
135mm 2.0 the IQ "sharpness" reaches maximum at f5.6
Granted by doing the above method, I realize one sacrifices bokeh for IQ. Anyone with thoughts on this? Do many others shoot primes wide open for portraits?
Thanks for taking the time to read this!