Quote:
Originally Posted by luigi bertolotti
Thanks for the quick answers, straight & clear... but... you say c is the circle of confusion (I remember to have often seen the term "CoC" for it)... is it correct an estimate value of 0,33 mm for M8 ? I know it's a questionable issue, but seem to remember to have seen, somewhere, a magnitude-different value, like 0,023 or 0,027... maybe I'm missing something...
I checked some Net resource... there are lot of... but the values are typically in the range 0,02x mm
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My typing error: The »classical« circle of diffusion is 1/30 mm = 0.033. This is the value the markings on the lenses are based on. Normally it is better to use a smaller value, especially for digital.