Nidelva river through Trondheim Norway

Nidelva river through Trondheim Norway
by Saaru Lindestokke                

Submit your Photo
Hall of Fame

Please participate in Meta
and help us grow.
Photography Stack Exchange is a question and answer site for professional, enthusiast and amateur photographers. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

This question already has an answer here:

I just want to know how much magnification there is... if I have a point and shoot camera and it has 10X zoom, I'm seeing that the subject is "brought" 10x closer. So, what does a dSLR telephoto lens need to be to bring the subject 10X closer? I am looking to buy a 55-200mm Sony lens - will the subject be approximately 10x closer? Or 5x closer or 15x closer?

share|improve this question

marked as duplicate by mattdm, dpollitt, Paul Cezanne, Matt Grum, John Cavan Jul 20 '13 at 0:29

This question was marked as an exact duplicate of an existing question.

2  
Note that that's not what the "10x" means. See the question linked above for explanation. – mattdm Jul 19 '13 at 22:13

To answer your question we need to know two things:

  1. The max focal length of the lens (200?)
  2. The "normal focal length" for your sensor size (about 45mm on a FF DSLR), but much smaller on a P&S

Now just divide number #1 by #2, so on my FF DSLR a ~200mm lens makes things look 4x closer. The 10x zoom advertising copy on P&S cameras has to do with how large a range the lens covers, which of course has a relationship to how close it can make things look, but by itself cannot answer your question.

share|improve this answer

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