Pentax HD DA 20-40mm F2.8-4 ED Limited DC WR on Pentax K-3 vs Tamron SP AF 28-75mm F/2.8 XR Di LD Aspherical [IF] Pentax on Pentax K-3

COMPARISON SELECTION (3 selected items max.)
Pentax HD DA 20-40mm F2.8-4 ED Limited DC WR
Pentax HD DA 20-40mm F2.8-4 ED Limited DC WR

DXOMARK Score
Best at f=30mm & f/3.5 [?]
17

Lens Metric Scores

Sharpness [?]
9 P-Mpix
Transmission [?]
3.6 TStop
Distortion [?]
0.4 %
Vignetting [?]
-1 EV
Chr. aberration [?]
7 µm
Tamron SP AF 28-75mm F/2.8 XR Di LD Aspherical [IF] Pentax
Tamron SP AF 28-75mm F/2.8 XR Di LD Aspherical [IF] Pentax

DXOMARK Score
Best at f=35mm & f/2.8 [?]
15

Lens Metric Scores

Sharpness [?]
9 P-Mpix
Transmission [?]
3.2 TStop
Distortion [?]
0.1 %
Vignetting [?]
-0.4 EV
Chr. aberration [?]
6 µm