Westminster fountain at sunset

by Jorge Córdoba

submit your photo


Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

Take the 2-minute tour ×
Photography Stack Exchange is a question and answer site for professional, enthusiast and amateur photographers. It's 100% free, no registration required.

Pretty straight forward question. What does a lens hood do?

share|improve this question
1  
See photo.stackexchange.com/questions/399/… - some good answers there –  Reid Jul 16 '10 at 19:37

1 Answer 1

up vote 26 down vote accepted

A lens hood has two purposes - one is to shield the lens elements from stray light - either directly from the sun, from passing cars, from a flash, etc. This stray light can cause lens flare and reduced contrast, so it is best to limit it.

Its also useful for avoiding bumps to your lens or filter. I use mine a lot in the car, because my lens is always very close to the window.

(It can also make that huge telephoto look that much more impressive)

share|improve this answer
4  
And the reason to keep lens from stray light is because it lowers contrast and produces flare. –  Karel Jul 16 '10 at 19:10
    
@Karel Thanks, edited the answer to include those details. –  reuscam Jul 16 '10 at 19:14
1  
+1 for huge telephoto –  Reid Jul 16 '10 at 19:37
    
Another advantage when shooting close to a window is that you can press the lens hood up against the glass, and block out any light from the camera side of the window and reduce reflections. –  Edd Jul 22 '10 at 15:57
3  
Impressive-looking telephotos are very important in situations where you have to look like serious photographer, for example if you're trying to get past security into press sections on a show or sports event. –  che Jul 22 '10 at 16:16

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.