Lenses round ..Photographs square shaped why?
47620
How does a circular lens produce rectangular shots?
54122
Why does using a tilt-shift lens make things look miniature?
124074
Does stacking more lens filters decrease overall image quality?
139586
Polygonizing a raster yields lots of little squares?
9833
Why are my photos not crisp?
148154
Make square image
111979
Small, faint circle in corner of image. What is it?
18161
How would one use filters with the "bulb"-like shape front element lenses?
40865
What should I do when I have lenses with different filter thread sizes?
7424
Flat quads (or, why is my mesh so funky?)
11001
What is "angle of view" in photography?
60038
How do depth of field and the circle of confusion relate to pixel size on the sensor?
101300
What to look for in a wide angle lens?
137074
Why has a circle when the point light through my glass？
107488
What software should I use for converting fisheye photos to normal rectilinear photos?
87558
Reflecting points on a square to make it larger
61989
How can I intentionally include lens flare in my photographs?