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Old Feb 27, 2010, 6:23 PM   #1
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Default Canon S90 Zoom Question

If I understand correctly, once you zoom on the S90 you lose the large f2.0 aperture. Does that mean that the S90 is only better than other cameras (SD940, SD1200) when not zoomed at all?
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Old Feb 27, 2010, 6:42 PM   #2
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all small digicams will get smaller max apertures as you zoom in.

the s90 starts at 2.0 on the wide end, and goes to 4.9 max aperture at the telephoto end.

the sd940 starts at 2.8 on the wide end and goes to 5.9 max aperture at tele.

the advantages of the s90 is not just in the lens, but in the sensor. the s90 uses a larger and better sensor than the others, allowing it to capture good images at iso 800 and decent ones at iso 1600, these other camera's you have mentioned do not.
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Old Feb 27, 2010, 8:54 PM   #3
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I'm not sure if you will find this helpful, but here are several pictures taken with the S90 at higher ISOs, all hand held without post processing. These were just quick snap shots taken in program auto mode.

The first shot was taken at a club in extremely low light. It's not the best shot, but I doubt it would have been possible with the other cameras you mentioned. ISO is 1600 at f/3.2 with a partial zoom of 11mm (which I think is somewhere around 52mm in 35mm terms) and a shutter speed of 1/10 second.

The second is at f/2 fully wide also at ISO 1600 w/ a shutter speed of 1/15 second.

The next one is f/4, 15mm zoom at ISO 500 at 1/100.

The last one is f/4.9 22.5mm (about 110mm at 35mm equivalent -- I believe fully zoomed) ISO 800 at 1/25 second.

Hope it helps.
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Last edited by Jazzer251; Feb 27, 2010 at 8:58 PM.
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Old Feb 27, 2010, 9:38 PM   #4
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Thank you, Jazzer-

Those are excellent photo samples.

Sarah Joyce
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