Tamron Adaptall-2 28-70mm F/3.5-4.5 Compact CF Macro Zoom 試拍

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前陣子入手的老鏡頭 Tamron Adaptall-2 28-70mm F/3.5-4.5 Compact CF Macro Zoom。

這是一顆使用百搭接環（Tamron Adaptall）的老鏡頭。

鏡頭外觀



以下引用原廠的介紹：

Tamron 28-70mm F/3.5-4.5 Model 44A: Autofocus camera bodies and their accompanying autofocus lenses had already become all the rage when Tamron's 28-70 model 44A and the 70-210 model 46A lenses were introduced in 1986. Tamron correctly anticipated that sales of these two manual focus lenses would be moderate, and designed these two lenses to be as cost effective possible to manufacture. This lens, like its telephoto zoom sibling, incorporates high strength plastic instead of metal wherever possible. The focus and zoom collars are made of plastic and feature integral knurled plastic grips.

While both lenses looked and felt a bit cheap, there was no compromise in optical performance since Tamron wasn't willing to sacrifice optical quality in the pursuit of additional cost saving measures. Overall optical performance is somewhat above average and yields good to very good results at F/5.6 and smaller apertures. Optimal aperture is F/8 or F/11 depending on the zoom setting. The 28-70's optical design borrows heavily from the SP 35-80 F/2.8-3.8 and incorporates the same basic features. Like the SP 35-80, this lens features a maximum macro magnification at the telephoto focal length and incorporates the Minimum Object Distance (M.O.D.) selector system whereby turning the focus ring to the minimum focus distance causes the zoom ring to automatically move to the telephoto position. This lens, as with the SP 35-80, has a slight excess of barrel distortion between the wide angle to normal zoom range.

試拍後，覺得這顆鏡頭還算不錯，張貼幾張測試照。

試拍：



局部裁切：



試拍：

moster

是手動對焦沒錯，這是趁蝴蝶吸食花蜜，停留較長時間時拍攝的。

第二張局部裁切，可以清楚的看出蝴蝶正在進食。

其實只要有點耐心，並不難捕捉蝴蝶的身影。

[ 本文最後由 moster 於 2008-4-23 02:37 編輯 ]

moster

再貼一些新的試拍作品。







[ 本文最後由 moster 於 2008-4-23 02:38 編輯 ]