Re: Canon 200mm F2.8 L Lens
When I got my first EOS and started learning I found Andrew Gibson's books really helpful. I believe he writes for EOS Magazine and it was through his books I found this site. Now he DOES say the shutter speed calculation on APS-C would be different to FF. Here's a couple of very small extracts:
If there are any beginners out there looking for a good place to start to understand your EOS camera then I can thoroughly recommend his ebooks.
Originally posted by briansquibb
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If you are using an APS-C camera then a general guide is to invert the focal length of the lens, find the nearest shutter speed, then halve it. For example, if you are taking a photo with the 55mm end of a kit lens:
1. Invert the focal length: 1/55
2. Find the nearest shutter speed: 1/60 second
3. Halve it: 1/125 second. (1/60 x 1/2 = 120)
.....
If you own a full-frame camera such as the EOS 5D Mark III or 6D, then you have more
leeway with shutter speeds. Using the inverse should be fine. So, if you were using a
50mm prime lens on a full-frame camera a shutter speed of 1/60 second should be
plenty fast enough to prevent camera shake.
1. Invert the focal length: 1/55
2. Find the nearest shutter speed: 1/60 second
3. Halve it: 1/125 second. (1/60 x 1/2 = 120)
.....
If you own a full-frame camera such as the EOS 5D Mark III or 6D, then you have more
leeway with shutter speeds. Using the inverse should be fine. So, if you were using a
50mm prime lens on a full-frame camera a shutter speed of 1/60 second should be
plenty fast enough to prevent camera shake.
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