Sharpness question on T2i
AnthonyL
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Veteran Member
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Posts: 3,686
Re: Sharpness question on T2i
billthemountain wrote:
At this point, trying to figure out the focus, I would suggest using AV at f/8 with auto ISO and see what you get. In daylight, I doubt the camera will boost the ISO that high, and I'd worry about that last.
I like this advice, thank you. Am I being too cautious with 1/320? I mean, I don't have a steady hand, but am I over compensating? What is the average shutter speed for a 100mm lense. I always heard it was best to match the lense focal range. So a 100mm lense is 1/100mm. But I also heard to never go under 1/300. So I really don't know what the best practice is.
Best practice is, in general and as you say, 1/FL, so with a 100mm lens then 1/100th and with a 50mm then 1/50th. Obviously faster if there is no adverse sacrifice elsewhere and best practice does depend on how steady you are as well as how good is your shutter press technique. I'm not sure I've seen what actual lenses you are using. You can readily compare a shot taken with your camera on a tripod or a flat surface v hand held to find where your limits are then add a % just to be safe, but 1/300th with a 50mm would for most be far too conservative.
Canon EOS 700D
Canon EF-S 10-22mm F3.5-4.5 USM
Canon EF-S 55-250mm f/4-5.6 IS
Canon EF 40mm f/2.8 STM
Canon EF-S 18-55mm f/3.5-5.6 IS STM
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