I have always wondered, why is it that a lens can only focus from so far away from the subject? I know some lenses have a kind of macro switch which basically allows them to focus closer but why are ...
Can the method from the paper “High-Quality Computational Imaging Through Simple Lenses” compete with conventiona lenses?
This answer to another question of mine linked to an interesting article: High-Quality Computational Imaging Through Simple Lenses. It purposes the use of simple optics and computational photography ...
I am kinda torn between buying a Sigma 18-35mm f1.8, Nikkor 17-55 f2.8 and Sigma 17-50 f2.8 for my D3100 and D7100 cameras. The reason for confusion is that the Nikkor one has a weather sealing ring ...