1. ## Magnification VS Distance

When it comes to macro, what is the relation between distance and magnification? And how do they work? For a example a camera can have a macro of 1cm but the magnification is not great, why is that so?

2. ## Re: Magnification VS Distance

working distance is good for subject that will fly/run away when you approach it for a shot.
Magnification is how big you can get the subject.

Eg. the 12-24 can focus as close to 3cm (If I remember correctly) but due to the wide angle of view the subject will still appear small.

3. ## Re: Magnification VS Distance

a magnification factor of 1 (life size image) is obtained when

subject distance = 2 X lens focal length
(where subject distance is measured from the optical centre of the lens)

4. ## Re: Magnification VS Distance

for the more mathematically inclined

lens focal length
subject distance- lens focal length = magnification factor

(again subject distance measured from the optical centre of lens)

someone please correct me if i am wrong.

5. ## Re: Magnification VS Distance

Here's the sites which explains a lot about the working distance/magnification

http://www.dslreports.com/shownews/68725
http://azone.clubsnap.org/insectguide/page01.html