Sigma 18-250mm F3.5-6.3 DC OS HSM Canon on Canon EOS 70D vs Tamron AF 18-250mm F/3.5-6.3 Di II LD Aspherical (IF) Macro Canon on Canon EOS 70D vs Pentax smc Pentax DA 18-250mm F3.5-6.3 ED AL [IF] on Pentax K-S1

COMPARISON SELECTION (3 selected items max.)
Sigma 18-250mm F3.5-6.3 DC OS HSM Canon
Sigma 18-250mm F3.5-6.3 DC OS HSM Canon

DXOMARK Score
Best at f=24mm & f/4 [?]
10

Lens Metric Scores

Sharpness [?]
6 P-Mpix
Transmission [?]
5.8 TStop
Distortion [?]
0.4 %
Vignetting [?]
-0.7 EV
Chr. aberration [?]
8 µm
Tamron AF 18-250mm F/3.5-6.3 Di II LD Aspherical (IF) Macro Canon
Tamron AF 18-250mm F/3.5-6.3 Di II LD Aspherical (IF) Macro Canon

DXOMARK Score
Best at f=18mm & f/3.5 [?]
9

Lens Metric Scores

Sharpness [?]
6 P-Mpix
Transmission [?]
5.7 TStop
Distortion [?]
0.6 %
Vignetting [?]
-0.8 EV
Chr. aberration [?]
11 µm
Pentax smc Pentax DA 18-250mm F3.5-6.3 ED AL [IF]
Pentax smc Pentax DA 18-250mm F3.5-6.3 ED AL [IF]

DXOMARK Score
Best at f=18mm & f/3.5 [?]
13

Lens Metric Scores

Sharpness [?]
6 P-Mpix
Transmission [?]
5.6 TStop
Distortion [?]
0.6 %
Vignetting [?]
-0.8 EV
Chr. aberration [?]
14 µm