PhotoXchanger


If a zoom lens has a distance scale, is it parfocal?

lens
Updated September 25, 2017 19:18 PM







Benefits of a light meter

lighting
Updated September 25, 2017 07:18 AM


Recommendations for zoom lenses for an iPhone 3GS

zoom iphone
Updated September 24, 2017 20:18 PM

How to determine Spatial Resolution in an image?

camera
Updated September 24, 2017 19:18 PM

what to do with my schools photo contest

nikon
Updated September 24, 2017 15:18 PM


Helios 44 M - knurled W knob - purpose?

lens-design old-lenses
Updated September 24, 2017 11:18 AM


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