Pentax HD DA 20-40mm F2.8-4 ED Limited DC WR on Pentax K-3 vs Tamron SP 24-70mm F2.8 Di VC USD Nikon on Nikon D800E

COMPARISON SELECTION (3 selected items max.)

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

DXOMARK Score

Best at f=24mm & f/2.8 [?]
31

Lens Metric Scores

Sharpness [?]
23 P-Mpix
Transmission [?]
3.1 TStop
Distortion [?]
0.3 %
Vignetting [?]
-1.4 EV
Chr. aberration [?]
6 µm