Quote:
Originally Posted by billdan
Alex, if you want to get technical this is the maths for working out where the offending dust bunny or reflection is coming from.
d = (p x FR x diam) / 1000
d = Distance from CCD (mm)
p = pixel size (microns)
FR = Focal Ratio
diam = diameter of reflection or dust bunny in pixels
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awesome, i gave this a try,
pixal = 3.8mirconmeter
FR=765
Diam of bunny=140pixals? using photoshops ruler tool? its oval so i dont know which way to measure.
and i get that the bunny is being made 400mm from the sensor. hmmmmm