Recommended Max Exposure Time


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Jul 15, 2008
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#1
Got a newbie question here.

Read from book and website that it is recommended to set max exposure time to 1/X second where X is the focal length of the lens to minimize image blur due to handshake.

But for a non-full frame camera like 450d where crop ratio is 1.6, len is at maybe 50mm and without IS. What should be the recommended max exposure? Is it 1/50 or is it 1/(50*1.6)?

If it is 1/(50*1.6), need to be good at maths :bsmilie:
 

zac08

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Feb 21, 2005
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#2
Got a newbie question here.

Read from book and website that it is recommended to set max exposure time to 1/X second where X is the focal length of the lens to minimize image blur due to handshake.

But for a non-full frame camera like 450d where crop ratio is 1.6, len is at maybe 50mm and without IS. What should be the recommended max exposure? Is it 1/50 or is it 1/(50*1.6)?

If it is 1/(50*1.6), need to be good at maths :bsmilie:
You mean MINIMUM shutter speed to avoid handshakes...

just follow the focal length.. ignore the crop factor...
 

Jul 15, 2008
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#3
Yes, I mean min shutter speed.

There is no mention of crop factor in the book or website. Thanks for clarifying
 

Jul 19, 2007
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#4
yup, disregard the crop factor

anything is in the lens, and not the camera. all the cropped camera does is records a smaller portion of the image as compared to a full frame

that also explains why compacts dont have such a big problem with camera shake (focal lengths of only around 10mm)
 

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