PentaxForums.com - View Single Post - Pentax Announces New DA* Lenses and Other Accessories

Cideway · 02-22-2007, 12:33 AM

Originally Posted by Gio645

Thanks Adam. Great news!
I'm a bit disappointed though. I expected the 200 & 300 to be DFAs.

DFA simply refers to the lens having an aperture ring, while DA refers to lenses that don't. A DA* 200 f2.8 would not have any tangible gains in size or weight by being a reduced circle lens as it still requires a large aperture opening aperture.

02-22-2007, 12:33 AM	#9
Cideway Loyal Member Join Date: Feb 2007 Location: Adelaide, South Australia, Australia Gallery Photos: 2 Posts: 314	Originally Posted by Gio645 Thanks Adam. Great news! I'm a bit disappointed though. I expected the 200 & 300 to be DFAs. DFA simply refers to the lens having an aperture ring, while DA refers to lenses that don't. A DA* 200 f2.8 would not have any tangible gains in size or weight by being a reduced circle lens as it still requires a large aperture opening aperture.