http://www.dcfever.com/news/readnews.php?id=9695
原本想買第二代的
但看到這版 好像比第二代更好
想請問是大略差在哪裡?
有這價值衝這顆?
還有沒有人已買了 有實拍的照片?
1. http://www.lenstip.com/2081-news-Sigma_C_18-200_mm_f_3.5-
6.3_DC_Macro_OS_HSM_-_sample_images.html
2. http://www.dpreview.com/galleries/reviewsamples/albums/sigma-18-200mm-f3-5-6-3-dc-macro-os-hsm-c-samples-gallery
鏡片結構及MTF圖請看:
http://www.sigmaphoto.com/product/18-200mm-f35-63-dc-macro-os-hsm-c
1) Sigma 18-200mm F3.5-6.3 DC Macro OS HSM (C)
2) Sigma 18-200mm F3.5-6.3 II DC OS HSM
3) Tamron AF 18-200mm F3.5-6.3 Di II LD Asp. IF XR Macro
4) Nikon AF-S 18-200mm F3.5-5.6 GII VR
5) Canon EF-S 18-200mm F3.5-5.6 IS
該文結論:
The new 214 Sigma 18-200mm F3.5-6.3 DC Macro OS HSM (C) has changed the way photographers look at the super zoom lenses. Long focal range lenses are not just for covering various focal length anymore, now it can produce high quality & sharp images.
Ourshutterjourney.com part2則是去海南島旅遊七日的實際試用報告:
對焦性能: I have certainly no issue with this Sigma’s fast & silent focusing. The hypersonic motor (HSM) was super quiet & focusing was “instant hit” even at 200mm. This lens focuses well for both day or night operations. The lens did a little hunting when I used it at night during low light condition which was quite common for most variable apertures zoom lenses – now which lens doesn’t hunt at low light right? On overall, I really love the blazing fast & spot on focusing.
畫質表現: At tele-end of 200m, it maintained very good sharpness across the whole frame which is seldom the case for such lenses in the past. I am very impressed by it’s capabilities to keep CA (Chromatic aberration) very low. Almost negligible, I can hardly notice any CA at 18mm with 100% crop but at 200mm, it show very minimum traces of CA (outline) lining the tree branches which to me, is very acceptable.
I personally discovered that the “sweet spot” for this lens has to be the highly-loved F5.6, sharpness is very good across the whole frame, corner to corner. If you love shooting landscape at the wide 18mm range, you will never go wrong with the aperture set to F5.6 for this lens.
The phoblographer.com
還有另一篇測試文:
Like
Lightweight and shorter compared to other super-zoom lenses
An extremely wide and versatile focal length range
The zoom band is nice and fat with a tight rotating action
Sharp image quality and great color reproduction
Don’t Like
The focusing ring is small and extremely short
Expected but still annoying distortion and vignetting problems
Fringing is an issue in bright sunlight
總之, 上述測試雖說都指出有一些小缺憾, 但是都是旅遊鏡一定會有的問題, 但是Sigma (C) 18-200mm Macro已經降到最小, 同時對焦快速是一致讚賞的, 畫質也是超越過往, 因此算是物超所值了. 還有觀望的應該就是等Tamron 16-300mm PZD, Nikon 18-300mm VR這兩鏡上市後性能有無超越此鏡. 對了, Sigma這支官方開始供貨, 今日查到價格是13300, 超有吸引力的.
Sigma 18-200mm F3.5-6.3 DC Macro OS HSM C
Canon EF-S 28-200mm f3.5-5.6 IS Canon
Tamron AF 18-270mm F/3.5-6.3 Di II VC LD Aspherical [IF] Macro
結果見下圖
PMMA wrote:
要過很多很多...很多陣子才會有Sony接頭
(每次都要先等C/N前鋒部隊先殺出突圍...)..(恕刪)
這也算是SONY系統的缺點吧----人數不夠多, 廠商衝量當然以Canon第一, Nikon次之來生產, 另外官方售價改為13300, 又多了一個購買誘因, 不是嗎?
其實1:3的微距拍攝功能才是此鏡最大賣點, 等於用單眼也能一機搞定(望遠+廣角+微距),
過去幾乎僅能用高階DC來達成這目的.
現在回頭看看原廠18-200mm鏡的微距能力, 真是可憐啊!
2014 Sigma (C) = 1:3 = 0.33x
Sigma II = 1:3.8 = 0.26x
Tamron = 1:3.7 = 0.27x
Nikon = 1:4.5 = 0.22x
Canon = 1: 4.2 = 0.24x
新鏡頭則要拉到300mm才有相同微距能力:
Nikon 18-300mm 0.32x
Tamron 16-300mm 0.34x
若也要一鏡走天下, 只要標準焦段, 其實 Sigma 17-70mm F2.8-4 DC MACRO OS HSM 即可,
微距能力更有 0.36x , 而且是在70mm即可達成, 安全快門也只要1/100, 不像 上面的200mm, 300mm時的微距安全快門需要到1/300, 1/450.
焦距----最大光圈----微距放大比
18mm---F3.5----N/A
28mm---F4.2----N/A
35mm---F4.5----1:7.6
50mm---F5.0----1:5.7
80mm---F5.6----1:4.1
135mm--F6.3----1:3.3
200mm--F6.3----1:3
拍攝微距畫面時, 鏡頭伸長至200mm時, 加上原廠遮光罩, 從D80的CCD感光平面算起是22.5cm, 因此距最近對焦距離還有約16.5cm, 差不多是手一卡的長度.
此鏡頭是Made in Japan, 居然鏡頭蓋也是Made in Japan, 而遮光罩則沒有寫產地.
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