[makmakman]

我想買鏡, 但唔知買邊支好....
價錢兩支唔係差太多....
我想影風景...

有樣野唔係好明....點解呢支L鏡...個視角係57° 30' - 104°（對角)...但係佢得17MM焦距.....但有104度??
相對10-22MM個支有107度.....
咁係咪即係話兩支WIDE差唔多???

唔該各位幫幫手....THX

[大佬原]

益美迎圣诞优惠大酬宾，全场大降价，期待您的光临！

诺基亚N97 2650元

诺基亚 N93i 1800元

诺基亚N95 1350元

三星i908 2150元

黑莓9000(Bold) 2300元

苹果iPhone 3G版(16G) 2950元

联想ideaPad Y430G-PSE 3000元

索尼α900(含50/1.4镜头)单反套机 9800元

苹果MacBook(MB466CH/A) 4800元

佳能EOS 450D套机 4000元

。。。。。。。。。。。。。。。。。。。。。。。

了解更多优惠，请点击：http://www.am8888.com/ 益美数码官网

全国免费订购咨询电话：400-626-9518

[KELVIN_LKM]

因為EF-S有1.6倍焦距對換率 10X1.6=16mm
而EF 就當你係用係FF 機 所以 17mm

買EF 吧喇 第日上FF

[Canon Ball]

I agree, 17-40mm is good enough and great quality photo.
Remember, you can always upgrade to FF without changing the Len.

[tcfreeman]

17-40 (27.2-64)
10-22 (16-35.2)
generally, 28mm is coverage 85%
so i suggest 17-40, for future, move to a ff body, you still kept the len

[leolsliu]

On APS camera, 10-22 is much wider than 17-40 but 17-40 is better on the edge