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Old Jan 25, 2004, 7:42 AM   #1
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Default macro lenses

Can someone explain to me what the difference is between a 1:1 and a 1:2 ratio macro lense?

I want to be able to take close ups of insects, flower pollen, etc.
It looks to me like the 1:1 is more desirable, but doesn't a 1:2 magnify more?

Confused
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Old Jan 26, 2004, 4:04 AM   #2
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Default Re: macro lenses

Quote:
Originally Posted by hangloose
Can someone explain to me what the difference is between a 1:1 and a 1:2 ratio macro lense?
The meaning of 1/Y means a subject of length 1 appears on the image as length 1/Y. So, if Y is larger than 1, the image is smaller than the life-size. For example, 1:2 means 0.5X of the life-size. On the other hand, 2:1 is equivalent to 1:0.5, which means the image is twice of the life-size.

Quote:
Originally Posted by hangloose
I want to be able to take close ups of insects, flower pollen, etc. It looks to me like the 1:1 is more desirable, but doesn't a 1:2 magnify more?
Virtually all consumer digicam cannot go with 1:1. Most of them can at best do 1:2. To reach 1:1 or higher, say 2:1, you will need real macro lens or other techniques such as reverse mounting. See here for more details: http://www.stevesforums.com/phpBB2/v...ic.php?t=15584
http://www.stevesforums.com/phpBB2/v...ic.php?t=17817

CK
http://www.cs.mtu.edu/~shene/DigiCam
Nikon Coolpix 950/990/995/2500/4500/5700 User Guide
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