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02395344d




註冊: 2005-04-07

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題目F/8 provides the sharpest image in sigma 18-125??     Post time: 1 月 28 日

Which aperature should i use when using tele esp for taking photo with some flowers?? I found that in F/5.6, the image is not very sharp?? is it the case?

Also, should i put the aperature in f/8 all the time?
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pingu_hk




註冊: 2005-01-07

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題目Re: F/8 provides the sharpest image in sigma 18-125??     Post time: 1 月 28 日

I don't have Sigma 18-125, I have Sigma 18-200, the images from below f8 in my lens is unacceptable, must step down to f8 to f16 in order to get sharp image.

May be this is the common problem of cheap zoom lens.

For taking macro with the Sigma, I must use flash & step down to f16 to get the best image.

HAPPY PHOTOGRAPHY
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02395344d




註冊: 2005-04-07

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題目Re: F/8 provides the sharpest image in sigma 18-125??     Post time: 1 月 28 日

Thank you so much for sharing your experience

Happy photography too
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