I cannot explain your conclusion, that 4X and 12X produce equal results.

Here is a link of sample photos taken with the S2 IS:

http://www.steves-digicams.com/2005_reviews/s2is_samples.html

The shots of the boats are taken at 36mm, 115mm, 227mm, and 432mm (focal lengths).

I don't see how a 4X camera with a focal length of 35mm to 140mm will equal that.

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