Rock wrote:
不好意思,請教一下小...(恕刪)
看一下人家測試的 成像品質吧....
成像 兩隻都有紫邊 SIGMA 放大所以明顯很多
但成像 也很明顯的 SIGMA 比較好..他都是拿兩隻 最好成像的光圈
Tamron SP AF 17-50 mm f/2.8 XR Di II LD Aspherical (IF)
http://www.lenstip.com/18.5-Lens_review-Tamron_SP_AF_17-50_mm_f_2.8_XR_Di_II_LD_Aspherical_(IF)_Chromatic_aberration.html
Sigma 17-70 mm f/2.8-4.0 DC Macro OS HSM
http://www.lenstip.com/223.5-Lens_review-Sigma_17-70_mm_f_2.8-4.0_DC_Macro_OS_HSM_Chromatic_aberration.html
散光測試
http://www.lenstip.com/18.7-Lens_review-Tamron_SP_AF_17-50_mm_f_2.8_XR_Di_II_LD_Aspherical_(IF)_Coma_and_astigmatism.html
http://www.lenstip.com/223.7-Lens_review-Sigma_17-70_mm_f_2.8-4.0_DC_Macro_OS_HSM_Coma_and_astigmatism.html
暗角
http://www.lenstip.com/18.8-Lens_review-Tamron_SP_AF_17-50_mm_f_2.8_XR_Di_II_LD_Aspherical_(IF)_Vignetting.html
http://www.lenstip.com/223.8-Lens_review-Sigma_17-70_mm_f_2.8-4.0_DC_Macro_OS_HSM_Vignetting.html
這是我拍的成像品質 (按圖可以放大給他看)
