View Single Post
Old Dec 15, 2006, 4:24 AM   #45
Senior Member
Join Date: Oct 2005
Posts: 146

I have a minolta 28-75mm f2.8 and a sigma 28-200mm f3.5-5.6, the minolta f2.8 is very good in low light, I just compare these two lens both set at f5.6, aperture priority on my KM5D, the picture of the minolta len is darker with shutter speed of 1/20" and the sigma is very good at 1/13", I don't know why the KM5D did not detect the light and set the exposure correctly on every len? But when I use the M mode to set both len at f5.6 and 1/13", the picture of both lens are the same. Looks like that the sigma has done a better job than the minolta. I then tried the minolta 50mm f1.7, it has the same result of the the minolta 28-75mm when I set to F5.6, the KM5D sets the speed at 1/20" instead of 1/13" and the picture is little too dark.
lsifs is offline   Reply With Quote