A is derived by converting the F-number to an aperture! Also, be careful about units: here work is done in mm.
sirejdua
I think the calculation for the foreground zi is incorrect; 1/(1/50 - 1/300) should be 60mm, so the circle of confusion would be C = 25 * (10/60) = 4.17mm
A is derived by converting the F-number to an aperture! Also, be careful about units: here work is done in mm.
I think the calculation for the foreground zi is incorrect; 1/(1/50 - 1/300) should be 60mm, so the circle of confusion would be C = 25 * (10/60) = 4.17mm
Where does the 1/1000 and 1/10,000 come from?