| 天地大同 |
2011-08-05 16:14 |
Working F/# is defined as,W= 1/（2n sinθ） (BT{\|,V_m
where θ is the real marginal ray angle in image space and n is the index of refraction of image space. The marginal ray is traced at the specified conjugates. Working F/# ignores surface apertures but considers vignetting factors. qsA`\%]H
Read the manual,you will learn more.
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