Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Canon on Canon EOS 500D, DIGITAL REBEL T1i or Kiss Digital X3 vs Sigma 17-50mm F2.8 EX DC OS HSM Canon on Canon EOS 500D, DIGITAL REBEL T1i or Kiss Digital X3 vs Sigma 18-50mm F2.8-4.5 DC OS HSM Canon on Canon EOS 500D, DIGITAL REBEL T1i or Kiss Digital X3

选择对比（最多3项）
Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Canon
Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Canon

DxOMark 分数
最佳表现于 f=17mm & f/2.8 [?]
12

镜头分数

清晰度 [?]
8 感知Mpix
透光量 [?]
3.3 TStop
畸变 [?]
0.3 %
渐晕 [?]
-0.7 EV
色差 [?]
6 微米
Sigma 17-50mm F2.8 EX DC OS HSM Canon
Sigma 17-50mm F2.8 EX DC OS HSM Canon

DxOMark 分数
最佳表现于 f=21mm & f/2.8 [?]
14

镜头分数

清晰度 [?]
7 感知Mpix
透光量 [?]
3.1 TStop
畸变 [?]
0.3 %
渐晕 [?]
-0.7 EV
色差 [?]
11 微米
Sigma 18-50mm F2.8-4.5 DC OS HSM Canon
Sigma 18-50mm F2.8-4.5 DC OS HSM Canon

DxOMark 分数
最佳表现于 f=18mm & f/2.8 [?]
9

镜头分数

清晰度 [?]
6 感知Mpix
透光量 [?]
4.1 TStop
畸变 [?]
0.4 %
渐晕 [?]
-0.9 EV
色差 [?]
10 微米