Canon EOS 400D 配哪支超廣角鏡呢？

Canon EF-S 10-22mm f/3.5-4.5 USM 係 Canon APS-C 系機種可用超廣角鏡頭中質素最佳的, 其實連同副廠在內還有以下幾支:

Tamron 11-18mm f/4.5-5.6 SP Di-II
Sigma 10-20mm f/4-5.6 EX DC HSM
Sigma 12-24mm f/4.5-5.6 EX DG HSM
Tokina 12-24mm f/4 DX

呢五支鏡只有 Sigma 12-24mm f/4.5-5.6 EX DG HSM 可正常用於 film body 或 full-frame DSLR. 如果唔考慮短期內升級至 FF body, 則絕對建議使用原廠 EF-S 10-22mm 作為 UltraWide lens.

首先睇焦距, 超廣角鏡 wide 1mm 的視覺效果差距都幾明顯, 因此 Canon EF-S 10-22mm 及 Sigma 10-20mm 係呢方面比較優勝

超廣角鏡首重變形控制, 少少變形係絕對容易係畫面中見到. Canon 原廠的係呢方面做得最好, 其次係 Sigma 10-20mm 及 Tokina 12-24mm, 最差係 Tamron 11-18mm.

成像方面當然要留意 sharpness, Canon EF-S 10-22mm, Sigma 10-20mm 及 Tokina 12-24mm 都做得唔錯, Tamron 果支仍然係比較差的.

之後就到色差問題, 基本上 APS-C 機種用的 ultra wide lens 支支都差唔多, 但係 Tokina 12-24mm 係零零舍舍比其他幾支勁好多, 外國測試網站直頭有相為證, 如果經常影高反差影像, 呢支鏡顯現的紫邊會係非常勁...


綜合以上各點, Canon 原廠的始終優勝得多. 我自己部 350D 都係用緊佢做 wide lens.

P.S. 樓上位兄台搞錯了少少, Tokina 12-24mm 雖然都可以直接安裝於 FF 相機, 但係會出現成像圈的.

可參考以下 testing report 作比較 (可直接 click link):
Tamron 11-18mm
Sigma 10-20mm
Canon EF-S 10-22mm
Tokina 12-24mm

Tokina AT-X 12-24mm f/4 is good ...
example here :
http://picasaweb.google.com/liuyifeng/AttractiveHongKongCentral0208
Canon ef-s 10-22 f/3.5-4.5 USM is too expensive and cannot be mount in
ef camera .... only in 20D, 30D, 350D, 400D.
I tried both, and finally like the tokina 12-24, for the couple reason.
built like a tank ... good optics .... price is 3000 HKD cheaper ... constant f/4 ....
can be mount on 1d, 5d ... focus is fast ..., NO DISTORTION since 12x1.6 = 19 or 20mm ... very usable ... for WIDE angle...
if it is 10mmx1.6=16mm, tons of distortion ....
but definitely a preference issue.
Never ever say, Canon's lens is always better ... some very good Tamron and Sigma lens around ...
good luck

我讚同用這一支「Canon EF-S 10-22mm f/3.5-4.5 USM 」。原裝鏡係靚的。用途好過這支TokinaAT-X 28-70mm f/2.8 287 Pro SV 得28-70mm廣角鏡唔闊‧70mm同標鏡差不多。
10-22mm 映多好野。例如去東坪洲映野小的廣角鏡唔點。