Bokeh on a 55 mm lens
7818
How can I get dramatic shallow DOF with a kit lens?
40865
What should I do when I have lenses with different filter thread sizes?
85095
Selecting optical size?
21744
Focal length of an ellipse and related results
154079
Should I buy a Canon 55-250mm lens or 70-300mm for my Rebel T3i?
26448
How does a DX-format sensor support FX lenses?
78500
Can I desaturate incoming light using a filter or series of filters mounted to the lens?
74363
Why is the bokeh shaped like the aperture?
156217
What causes this 'bokeh crop' effect?
113532
What is the cause of this non-uniform bokeh effect?
131157
Should I replace the Canon 18-55mm f/3.5-5.6 kit lens with a 40mm f/2.8 or 50mm f/1.4?
152115
Can I convert binocular zoom to equivalent lens focal length?
17968
Does 4.0-72mm on the lens when equivalent focal length is 24-432mm mean crop factor of 6×?
6598
How to calculate the correct focal length needed for a subject of a given size and distance?
59198
How does an apodization filter improve bokeh?
61989
How can I intentionally include lens flare in my photographs?
143902
Can I adapt a Sigma SLR lens made for Pentax K mount to a Nikon DSLR camera?