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I want to buy a canon elph. What's the best one? And what does 4.6 - 17.4 mm mean? And 1:2.5 - 8.5... mean - canon elph 2 aps camera little killer

4.6 ~ 17.4 mm is the ultimate goal of the focal
1:2.5 ~ 8.5 is the f-stops, 2.5 @ 4.6 mm and 17.4 mm @ f / 8,5.

You need to look at the characteristics of the P & S camera Canon ... By: .. to decide what is best.

http://www.dpreview.com/reviews/specs/Ca ...