[321668321668]

本人想買支wide鏡,以下兩支是本人心水,請各位師兄比比意見吖!!!
canon 17-40mm F4 USM
Sigma 17-50mm F2.8 EX DC OS HSM

[Andy7828]

Sigma 17-50mm F2.8 EX DC OS HSM

[細B]

師兄請問支Sigma 17-50mm F2.8 EX DC OS HSM 啱唔啱Canon 550D用

[Andy7828]

啱Canon 550D用

[細B]

唔該晒13少師兄~~

[321668321668]

13少師兄可以講解下嗎???thanks!!!^_^

[Andy7828]

講解咩??
canon 17-40mm F4 USM
Sigma 17-50mm F2.8 EX DC OS HSM

e2支在...防震...光圓...ring...價...<<<已說明

[Andy7828]

550D沒防震最好支len有防震...
光圓2.8及4..有大光圓方便好多...
ring多10就係多...
Cost...C要5千5幾...S要4千9幾...
除非你想上FF...否則17-50 2.8最好...

[321668321668]

13少: 成像邊支鏡比較出色???

[Andy7828]

去參考其他ching的報告...
成像e家野...我話好...第2個人話5好...難有共識...
要自己去對比過先知...

[laukakui]

請問13少 ching....Sigma 支鏡用唔用到 X1.3(1D mark III)既機種呢?....thank you

[Andy7828]

Sigma e支鏡用係APS-C機...

[Andy7828]

佢個"DC"字解釋
These are dedicated digital SLR camera lenses with an image circle designed to suit image sensors that correspond to APS-C size. Inhouse technology accumulated through the development of our digital SLR camera was used to optimize optical performance for our digital lenses. This is a high-performance lens series that fuses technology such as lens power layout and coating design with the know-how Sigma has built up over many years of developing interchangeable lenses for SLR cameras. By reducing the diameter of the image circle, Sigma has achieved a more compact, lightweight lens series.
* An image sensor larger than those corresponding to the APS-C size cannot be used in digital SLR cameras, 35 mm SLR cameras, or APS film SLR cameras. If such an element is used, vignetting will occur on the picture surface. The angle of view varies depending on which camera model the lens is used with. 35mm format is approximately 1.5 - 2.0 times the focal length of the lens being used.

[321668321668]

13少: 用係5DII又如何呢???

[Andy7828]

FF機一定用canon 17-40mm F4 USM...
Sigma 17-50mm F2.8 EX DC OS HSM係APS-C機用...