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Forums > Back > Sigma 17-50 f/2.8 EX OS HSM
arvydas
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#6
03-24-2012, 06:42 PM
If, for example, f4.0 shutter speed is 1/30, f2.8 will be 1/60 (in that particular environment). You can read about exposure on this site at "Technique" section, [url="http://www.cambridgeincolour.com/tutorials/camera-exposure.htm"]here[/url]or [url="http://www.dpreview.com/learn/?/Glossary/Exposure/Exposure_01.htm"]here.[/url]



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Messages In This Thread
Sigma 17-50 f/2.8 EX OS HSM - by iggykh - 03-24-2012, 02:57 PM
Sigma 17-50 f/2.8 EX OS HSM - by popo - 03-24-2012, 03:07 PM
Sigma 17-50 f/2.8 EX OS HSM - by iggykh - 03-24-2012, 03:38 PM
Sigma 17-50 f/2.8 EX OS HSM - by arvydas - 03-24-2012, 04:42 PM
Sigma 17-50 f/2.8 EX OS HSM - by iggykh - 03-24-2012, 05:26 PM
Sigma 17-50 f/2.8 EX OS HSM - by arvydas - 03-24-2012, 06:42 PM
Sigma 17-50 f/2.8 EX OS HSM - by iggykh - 03-27-2012, 05:15 AM
Sigma 17-50 f/2.8 EX OS HSM - by Brightcolours - 03-27-2012, 08:57 AM

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