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Old 2008-10-14, 1:52pm
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parisgal parisgal is offline
Fancy Mammal
 
Join Date: Jan 07, 2006
Location: California
Posts: 986
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Yup, that means it decided on the ISO on the fly. To have more control you might want to set it to 200. It might also be a preference that you lose control of in Macro mode.

1/568 is a strange setting but fast. So you've got room to play with your current set up.

I'd put the camera into manual and set the F stop to F4 or a larger number - the larger the number the more of the depth of the image that will be in focus.

Then I'd take a whole series of images starting with 1/400 of a second every step on down to 1/60. Then I'd open the images in a paint program and see which starts off at pretty close to having the white background white, while maintaining the details in the bead. That setting will be pretty close to what works for you set up with most beads (as long as nothing gets moved).

Then head off to white balance in your photo program and make further adjustments. That should give you a much cleaner image to start with.
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