Sigma 18-50mm f/2.8 DC Lens Review - page 6

I got two 16-35s, two 17-40s, and a 18-55 kit lens to test with my Sigma 18-50/2.8.  It appears the 2nd 16-35 is either a terrible performer or badly focused.  I suspect the former but more testing is in order.  Take note that the #2 lenses were tested later in the day (still indoors, same lighting) so the direction isn't exactly the same.  Also, exposure was one on Aperture Priority so I could do the test more quickly, and therefore shutter speeds may have some variation.  Besides that the shots were done from a counter with a cable release with mirror lockup so they should be as sharp as necessary.

f/2.8 Center Crops: Canon 16-35/2.8L #1 @ 16mm, f/2.8

Canon 16-35/2.8L #2 @ 16mm, f/2.8

Sigma 18-50/2.8 @ f/2.8

f/4.0 Center Crops: Canon 16-35/2.8L #1 @ 16mm, f/4.0

Canon 16-35/2.8L #2 @ 16mm, f/4.0

Canon 17-40/4.0L #1 @ 17mm, f/4.0

Canon 17-40/4.0L #2 @ 17mm, f/4.0

Sigma 18-50/2.8 @ f/4.0

Canon 18-55/3.5-5.6 @ 18mm, f/3.5 (wide open... forgot to do f/4.0)

f/5.6 Center Crops: Canon 16-35/2.8L #1 @ 16mm, f/5.6

Canon 16-35/2.8L #2 @ 16mm, f/5.6

Canon 17-40/4.0L #1 @ 17mm, f/5.6

Canon 17-40/4.0L #2 @ 17mm, f/5.6

Sigma 18-50/2.8 @ f/5.6

Canon 18-55/3.5-5.6 @ 18mm, f/5.6

f/8.0 Center Crops: Canon 16-35/2.8L #1 @ 16mm, f/8.0

Canon 16-35/2.8L #2 @ 16mm, f/8.0

Canon 17-40/4.0L #1 @ 17mm, f/8.0

Canon 17-40/4.0L #2 @ 17mm, f/8.0

Sigma 18-50/2.8 @ f/8.0

Canon 18-55/3.5-5.6 @ 18mm, f/8.0

f/11 Center Crops: Canon 16-35/2.8L #1 @ 16mm, f/11

Canon 16-35/2.8L #2 @ 16mm, f/11

Canon 17-40/4.0L #1 @ 17mm, f/11

Canon 17-40/4.0L #2 @ 17mm, f/11

Sigma 18-50/2.8 @ f/11

Canon 18-55/3.5-5.6 @ 18mm, f/11

[Next Page-Left Crops]