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Offline PhyrePhoX

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« Reply #20 on: 07 / January / 2009, 10:33:05 »
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hm, i will give it a shot sometime (not when its so cold though :D)

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Offline dzsemx

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« Reply #21 on: 07 / January / 2009, 20:53:49 »
i think most of the Axx and Gx powershots got their sweet point around F4(at wide)
for example s3is, a720, a650(probably other models too) if there is enough light, uses F4 (at wide) in P mode. 
probably this aperture is choosed for best quality.
what do you think?
« Last Edit: 07 / January / 2009, 21:00:41 by dzsemx »

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Offline LjL

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« Reply #22 on: 10 / January / 2009, 10:05:52 »
Yes, I agree that's probably the case. For reasons I don't quite know, the maximum aperture will not generally really provide the best sharpness (due to flaws in the optics, to the best of my understanding), so there's usually a sweet spot in the middle.

I've noticed, too, that the camera selects F4 when there's light (there needs to be quite a lot of light, though), and I agree with you that choice was probably not random.

 

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