我極可能會買S家的8-16mm,想說廣角鏡就是要夠廣,不需要用到8mm時,就用12mm以上吧,變型問題應該就比較少了。
Photozone給予此鏡極高評價,不論是光學品質(4顆星)、機械品質(4顆星)與性價比(5顆星),都比N家的10-24mm高很多,幾乎給予滿分
原文連接請按此
我嘗試摘錄翻譯其評估報告的結論(翻譯得不好,請勿見怪):
Sigma AF 8-16mm f/4.5-5.6 DC HSM 可能是同類鏡頭中的新星,從最大的光圈開始,全焦段都非常銳利。紫邊也獲得非常好的控制。對於這種超廣角鏡來說,這是非常巨大的成就。如果您從事建築攝影,使用8mm超廣角端可見到一些桶狀變形,其實這是同類鏡頭的通病,在12mm端已見到比其他同類鏡頭更少的變形狀況。它的最大問題是最廣角端的暗角現象,但這並不奇怪,因為在這類超廣角的焦距,自然的暗角現象是無法避免的。不過,只要避開使用最大光圈,其實可以某種程度上減少這種現象。
此鏡的製造品質非常好,但有一些人可能會不喜歡其前面部分的燈炮形狀結構的脆弱,這也阻礙濾鏡的安裝。自動對焦快速,近乎無聲,而且以其表現及鏡頭本身的自然條件來看,其定價更是超吸引人。因此,我們高極推薦此鏡。
(原文:
The Sigma AF 8-16mm f/4.5-5.6 DC HSM may be the new star in this lens segment. It's very sharp across the whole range straight from the max. aperture. Lateral CAs are also very well controlled. That's quite an achievement for such an extreme ultra-wide angle zoom lens! If you're into architecture photography you will notice some barrel distortions when using the 8mm setting but that's actually a general problem in this class and at 12mm it shows less distortions than the competition actually. The biggest issue is the amount of vignetting at the widest setting but that's not really a surprise because the inherent amount of natural vignetting is unavoidable at such extreme focal lengths. However, it's still a good idea to avoid the max. aperture to tame the light fall-off to some degree.
The build quality of the Sigma lens is very good although some may not like the vulnerable "bulb"-like front element which prohibits the use of filters. The AF is both fast and nearly silent. The pricing of the Sigma is very attractive relative to its performance figures as well as the extreme nature of the lens. Therefore ... highly recommended (if you can find a good sample)! )
廣角3鏡對比:
http://www.flickr.com/groups/1381252@N21/discuss/72157623893299975/
Sigma 8-16mm作品集:
http://www.flickr.com/groups/1381252@N21/pool/
Sigma 8-16mm VS Tokina 11-16mm
http://www.flickr.com/photos/davidpinkerton/4644474333/

讓我改觀了...

http://bbs.nikonclub.cc/?fromuser=seven
http://bbs.nikonclub.cc/?fromuid=258
godlovestommy wrote:
S8-16畫質對我而言還沒啥信心
這顆在photozone測試的解像力結果可是破表阿...


但是廣角鏡頭的運用往往是風景,街頭,所以濾鏡系統的考慮不得不看清楚...8-16需要配置特殊的濾鏡安裝器, 這個鏈接 有示範 http://www.stockholmviews.com/sigma_8-16/sigma-8-16mm-filters.html
這些濾鏡和鏡片,加起來比鏡頭還貴,.....
所以退而求其次,看看其他選擇
Tokina 提供全線的廣角鏡頭, 有 幾款 11-16, 還有11-20
不過,小弟還是喜歡 Sigma, 剩下只有這個 10-20f3.5
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