Do Lenses have a lifespan?
60413
Do good lenses really last a lifetime?
38798
What is the life expectancy of a Borg?
35135
Does the Force wane as you age?
129259
Do computer glasses actually work?
153578
Variable focal length for macro lenses?
138978
Is optical image stabilization a necessary feature for any lens?
129196
Does crop factor still apply to a vintage film SLR lens?
48137
Lifetime of temporaries
158181
How does the lens diameter influence photo quality?
9671
Do gravitational lenses have a focus point?
141729
Why does evolution not make our life longer?
95190
What should I look for in lenses for long range and close up animal and natural shots?
58265
What happens to a lens when you turn the focus ring during AF mode?
109866
Does the lens I just bought have a fungus?
38712
Diffraction by a lens
76533
Is Myopia Reversible/Curable?
4389
How can a lens with a single focal length focus on more than one plane?