Zoom and Focal Length


Feb 4, 2012
50
0
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Changi
#1
No idea what happened to my post just now but it disappeared so im reposting...
So i came across 2 lenses of similar focal length but differing zooms... i always thought focal length is equivalent to zoom... so i guess it isnt... so my question is... what is the difference between zoom and focal length
 

An drew

Senior Member
May 27, 2005
3,920
9
38
#2
Zoom means you can vary the focal length. E g. 24-70 means you can shoot between focal length of 24mm to 70 mm.
 

Octarine

Moderator
Staff member
Jan 3, 2008
12,538
33
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Pasir Ris
#3
Something to read: Understanding Camera Lenses
First of all, forget the word zoom when it comes with funky numbers (e.g. 11x zoom) - it's marketing crap. What matters is only the focal length (used at a certain sensor format).
 

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