Sigma 150-500mm F5-6.3 APO DG OS HSM Pentax on Pentax K-S1 vs Nikon AF-S DX NIKKOR 18-140mm f/3.5-5.6G ED VR on Nikon D500

COMPARISON SELECTION (3 selected items max.)
Sigma 150-500mm F5-6.3 APO DG OS HSM Pentax
Sigma 150-500mm F5-6.3 APO DG OS HSM Pentax

DXOMARK Score
Best at f=150mm & f/5.6 [?]
12

Lens Metric Scores

Sharpness [?]
5 P-Mpix
Transmission [?]
6.5 TStop
Distortion [?]
0.2 %
Vignetting [?]
-0.3 EV
Chr. aberration [?]
9 µm
Nikon AF-S DX NIKKOR 18-140mm f/3.5-5.6G ED VR
Nikon AF-S DX NIKKOR 18-140mm f/3.5-5.6G ED VR

DXOMARK Score
Best at f=18mm & f/4 [?]
19

Lens Metric Scores

Sharpness [?]
10 P-Mpix
Transmission [?]
5.6 TStop
Distortion [?]
0.7 %
Vignetting [?]
-1.2 EV
Chr. aberration [?]
12 µm