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Forums > Back > Lense "Brightness"
#1
I've tried the Sigma 17-70 and I've been suprise how is was more bright than my other lens. I've took the same picture my 18-55 and switch to the 17-70, with the same seting I end up with a over exposed picture. Is this just because the 17-70 have bigger glass in front? ( 72mm vs 52mm on filter size)



Which would mean that the bigger to glass in front, the better the lens will act in low ligth situation ( since you need to step down to have the same picture )



I'm not sure what the explanation for all this...
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Messages In This Thread
Lense "Brightness" - by Xastoul - 01-12-2012, 12:45 AM
Lense "Brightness" - by Klaus - 01-12-2012, 07:32 AM
Lense "Brightness" - by Guest - 01-12-2012, 07:57 AM
Lense "Brightness" - by frank - 01-12-2012, 08:45 AM
Lense "Brightness" - by wim - 01-12-2012, 09:29 AM
Lense "Brightness" - by Xastoul - 01-12-2012, 02:27 PM
Lense "Brightness" - by Guest - 01-14-2012, 03:00 PM
Lense "Brightness" - by wim - 01-14-2012, 10:07 PM
Lense "Brightness" - by Guest - 01-15-2012, 01:21 PM
Lense "Brightness" - by Xastoul - 01-15-2012, 05:53 PM

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