The lens-optics tag has no wiki summary.
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1answer
89 views
Is there a correspondence between Tilt-Angle and the angle of the Focus-Plane?
Tilt lenses have their tilt-range specified in degrees, typically around ±8°. It seems that this number corresponds to how much a lens physically tilts along one axis. The effect is to tilt the plane ...
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1answer
595 views
How does the quantity of elements and blades in a lens affect the optics?
I am trying to get a greater understanding of how lenses work. Basically I bought this lens, the Sigma 10-20 f4-5.6:
The construction has really fascinated me. 14 Elements in 10 Groups?! What ...
1
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1answer
137 views
How Do DxO Lens Ratings compare between systems?
Looking for new camera system with changing lenses (DSLR or SLD) I find DxOMark also has rating for lenses: http://www.dxomark.com/index.php/Lenses/Camera-Lens-Ratings
What do the results numbers ...
