Sigma 10-20mm F4-5.6 EX DC HSM Nikon on Nikon D500 vs Sigma 8-16mm F4.5-5.6 DC HSM Pentax on Pentax K-50

COMPARISON SELECTION (3 selected items max.)

Sigma 10-20mm F4-5.6 EX DC HSM Nikon

Sigma 10-20mm F4-5.6 EX DC HSM Nikon

DXOMARK Score
Best at f=10mm & f/4 [?]	13

Lens Metric Scores
Sharpness [?]	5 P-Mpix
Transmission [?]	5.3 TStop
Distortion [?]	0.7 %
Vignetting [?]	-1.5 EV
Chr. aberration [?]	18 µm

Sigma 8-16mm F4.5-5.6 DC HSM Pentax

Sigma 8-16mm F4.5-5.6 DC HSM Pentax

DXOMARK Score
Best at f=14mm & f/5.6 [?]	13

Lens Metric Scores
Sharpness [?]	7 P-Mpix
Transmission [?]	5.4 TStop
Distortion [?]	0.9 %
Vignetting [?]	-1 EV
Chr. aberration [?]	17 µm

Sigma 10-20mm F4-5.6 EX DC HSM Nikon

Sigma 10-20mm F4-5.6 EX DC HSM Nikon

Announced	15/02/2005
Indicative price (USD)	479
Aperture	f/ 4-5.6
Focal range (mm)	10-20
Filter diameter (mm)	77
Max diameter (mm)	83.5
Mount type	Nikon F DX
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	14
Number of groups	10
Diaphragm blades	6
Circular aperture	No
Length (mm)	81
Weight (gr)	470

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

Sigma 8-16mm F4.5-5.6 DC HSM Pentax

Sigma 8-16mm F4.5-5.6 DC HSM Pentax

Announced	01/02/2010
Indicative price (USD)	699
Aperture	f/ 4.5-5.6
Focal range (mm)	8-16
Filter diameter (mm)
Max diameter (mm)	75
Mount type	Pentax KAF
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	15
Number of groups	11
Diaphragm blades	7
Circular aperture	No
Length (mm)	105.7
Weight (gr)	555

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