Canon EF-S 17-85mm f/4-5.6 IS USM on Canon EOS 50D vs Sigma 18-35mm F1.8 DC HSM A Canon on Canon EOS 50D

COMPARISON SELECTION (3 selected items max.)

Canon EF-S 17-85mm f/4-5.6 IS USM

Canon EF-S 17-85mm f/4-5.6 IS USM

DXOMARK Score
Best at f=17mm & f/4 [?]	9

Lens Metric Scores
Sharpness [?]	5 P-Mpix
Transmission [?]	5.5 TStop
Distortion [?]	0.5 %
Vignetting [?]	-0.8 EV
Chr. aberration [?]	10 µm

Sigma 18-35mm F1.8 DC HSM A Canon

Sigma 18-35mm F1.8 DC HSM A Canon

DXOMARK Score
Best at f=18mm & f/1.8 [?]	21

Lens Metric Scores
Sharpness [?]	9 P-Mpix
Transmission [?]	1.8 TStop
Distortion [?]	0.3 %
Vignetting [?]	-1.1 EV
Chr. aberration [?]	7 µm

Canon EF-S 17-85mm f/4-5.6 IS USM

Canon EF-S 17-85mm f/4-5.6 IS USM

Announced	01/09/2004
Indicative price (USD)	429
Aperture	f/ 4-5.6
Focal range (mm)	17-85
Filter diameter (mm)	67
Max diameter (mm)	78.5
Mount type	Canon EF-S
Stabilization	Yes
AF Motor	USM
Zoom type	Ring
Rotating front element	No
Tripod mount	No
Color	Black
Full-Time manual focus	Yes
Number of lenses	17
Number of groups	12
Diaphragm blades	6
Circular aperture	Yes
Length (mm)	92
Weight (gr)	475

Certain fields may be left blank. They will be updated as soon as possible.

Sigma 18-35mm F1.8 DC HSM A Canon

Sigma 18-35mm F1.8 DC HSM A Canon

Announced	18/04/2013
Indicative price (USD)	799
Aperture	f/ 1.8
Focal range (mm)	18-35
Filter diameter (mm)	72
Max diameter (mm)	78
Mount type	Canon EF-S
Stabilization	No
AF Motor	HSM
Zoom type	Ring
Rotating front element	No
Tripod mount	No
Color	Black
Full-Time manual focus	Yes
Number of lenses	17
Number of groups	12
Diaphragm blades	9
Circular aperture	Yes
Length (mm)	121
Weight (gr)	810

Certain fields may be left blank. They will be updated as soon as possible.