what is the meaning of lens rating: 50m, 200mm, etc ?


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erictan8888

Senior Member
Nov 9, 2004
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Singapore
#1
hi,

a newbie question here:

what exactly is the meaning of the lens rating when they say it is a 50mm lens? or a 200mm lens ?

so how do we gauge what type of lens to shoot what type of distance?

thanks
 

user111

Senior Member
Jul 27, 2004
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#2
http://cweb.canon.jp/camera/ef/index.html


click on the interactive mode (orange colour words) and it will load the active lens work thingy 4u 2 play around with. it allows u to explore the diff effects of focal lenght, perspectve and DOF control ...
 

jobo

New Member
Nov 21, 2004
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#3
user111 said:
http://cweb.canon.jp/camera/ef/index.html


click on the interactive mode (orange colour words) and it will load the active lens work thingy 4u 2 play around with. it allows u to explore the diff effects of focal lenght, perspectve and DOF control ...

yup good guide though its in jap.....when the page loads click on interactive movie icon on the left of the page.
 

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