[cklam633]

請問各位有沒有 用過 Canon EF 55-200 f4.5 - 5.6 II USM / Sigma AF 55-200 f/4.0-5.6 DC 分別如何?

[beancurdbean]

canon 可以用响FF同菲林機, 仲有USM高速靜motor

[cklam633]

Thanks! 相的質素如何?

[beancurdbean]

canon平鏡同sigma平鏡, 海軍鬥水兵
建議 Sigma 70-300 DG APO macro $1500

[cklam633]

再想問多點 Sigma 70-300 DG APO macro 與 Sigma 70-300 DG macro 有甚分別?

[beancurdbean]

"SIGMA's APO zoom lenses minimize color aberration. As the refractive index of glass depends on the wavelength of light, color aberration occurs when different colors form images at different points. This problem often occurs with telephoto lenses, but the Special Low-Dispersion (SLD) glass and Extraordinary Low Dispersion (ELD) used in SIGMA's APO lenses helps to compensate for color aberration, thereby allowing them to produce of sharp images."

http://www.sigma-photo.co.jp/english/lens/index.htm

[cklam633]

謝謝!!!!