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Old Jun 24, 2004, 7:04 PM   #1
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I was experimenting with doing some handheld telephoto shots on my Canon S1 IS in shutter priority. BTW, I've heard that the general rule of thumb is to have a shutter speed of 1/FL to get a good sharp pic, so at 380mm zoom with my S1, I should need to use 1/400" with IS turned off.

However, I have been able to get fairly sharp shots at around 1/50", and sometimes a couple 1/3-stops slower. The actual focal length of my S1 is 58mm considering the 1/2.7" sensor.

So... I was wondering... does the minimum shutter speed for telephoto refer to the actual physical focal length of the lens?

Now for the experiment... could someone who has several different-sized-sensor cameras take some telephoto shots (all preferably at the same or close to the same 35mm equivalent magnification) and post results of what shutter speeds are necessary on the various cameras for a sharp shot?
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Old Jun 25, 2004, 7:25 AM   #2
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The problem is that its completely person dependent. Some are just more steady than others, and some have better technique.

It's also very subject dependent. If you're taking a shot of flowers or a building you can take your time and get ready. Proper breathing and good arm and let position. If you're taking pictures of moving animals you might not have the time.

I know people who can't get a sharp picture without a tripod period. I can do fairly well with the general rule, and if I'm in practice better. I've never tried 1/50 or so. Since I always carry my tripod it doesn't really matter, I guess.


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