IS f/4.5 vs non IS f/2.8


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chjing

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Sep 11, 2006
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any difference regarding the speed?
 

surge

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Mar 17, 2002
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#2
any difference regarding the speed?
f4.5 IS will allow 1/15@4.5 (e.g)to get correct exposure while f2.8 can use 1/45. if the subj is a stone....quite alright. if the subj is a child...think 2.8 has a better bet under same lighting condition.

then if f2.8 IS vs F2.8 non IS....f2.8 IS has better change at least motion blur restricted more to subj moving than you handshake.
 

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