Do those Sigma DG lenses really have better optical quality?
|Sigma 120-300mm f/2.8 DG Sport- Stopped Focusing||General Technical Discussion||May 2, 2016|
|Camera bag for those with 300/f2.8 or 200/2||General Technical Discussion||Dec 9, 2011|
|For those of you who use the Canon pro9000, a question||General Technical Discussion||Feb 8, 2009|
|Question to those with the 50mm 1.4||General Technical Discussion||Nov 20, 2007|
|Capture and those Red Rectangles!||General Technical Discussion||May 3, 2005|