Pentax smc PENTAX DA 55-300mm F4-5.8 ED on Pentax K-50 vs Canon EF 70-300mm f/4.5-5.6 DO IS USM on Canon EOS 760D vs Nikon AF Zoom-Nikkor 70-300mm f/4-5.6D ED on Nikon D7000

COMPARISON SELECTION (3 selected items max.)

DXOMARK Score

Best at f=300mm & f/5.8 [?]
15

Lens Metric Scores

Sharpness [?]
7 P-Mpix
Transmission [?]
5.1 TStop
Distortion [?]
0.4 %
Vignetting [?]
-0.9 EV
Chr. aberration [?]
9 µm

DXOMARK Score

Best at f=100mm & f/5 [?]
11

Lens Metric Scores

Sharpness [?]
6 P-Mpix
Transmission [?]
5.9 TStop
Distortion [?]
0.2 %
Vignetting [?]
-0.4 EV
Chr. aberration [?]
9 µm

DXOMARK Score

Best at f=70mm & f/5.6 [?]
13

Lens Metric Scores

Sharpness [?]
6 P-Mpix
Transmission [?]
5.1 TStop
Distortion [?]
0.2 %
Vignetting [?]
-0.5 EV
Chr. aberration [?]
8 µm