Sigma SD9

Announced Feb 11, 2002 •
3 megapixels | 1.8 screen | APS-C sensor
Sigma SD9 Ask a question in forums about the Sigma SD9.
Ask a new question
2
Questions
asked
1
Questions
answered
Filter questions by
24
replies
Answered
The question assumes 100% fill factor and round :-O pixels, to keep the question simple. Let's say that, for a particular set-up, a CoC calculation (rightly or wrongly) gives a value of 0.014mm at the sensor but I insist on using 2x2 binning on a Sigma SD9 or SD10 giving an 0.018mm 'diameter' pixel. Would the DOF be that for 0.014mm or that for 0.018mm? Putting that another way, does the sensor pixel density px/mm^2 have an intrinsic DOF when projected out to the subject plane? I'm thinking...
6
replies
My canon SD940 suddenly has a black spot in the middle of every picture.  Cleaning lens hasn't  helped.  It looks like something get inside of the lens.   Can I fix the problem myself or I have to have a professional to fix it?
Filter questions by