Sigma 28-70mm F2.8 EX DG MACRO 有無人用or 用過?買得過嗎? 20point

What is your purpose of buying this lens?

As a general walk-around lens, it's a value buy. Here are the pros and cons I read from internet:

Pros:
- soild built
- small
- f2.8 constant (but ... see cons below)
- short focusing distance to allow some close-up shoots
- not expensive comparing to Canon's 28-70mm L f2.8, but what you get is what you pay

Cons:
- very soft wide open, need to stop down to at least f4 to get sharp pictures
- so-so image quality
- loud autofocus
- flare not well controlled, yellow cast

As a walk-around lens, Tamron 17-55mm f2.8 XR Di II is a very good alternative.

If you intend to do macro photography, you should consider real macro lens (1:1) since this Sigma not a true macro lens.

Sigma 28-70mm f/2.8 同 Tamron 28-75mm f/2.8
我試過後覺得Tamron 好D,係永成買仲有5年保用!
師兄,不如買A09 Tamron 28-75mm f/2.8 啦!我也買了$26xx.

2007-05-30 00:12:10 補充：
http://www.in-photoart.com/modules/newbb/viewtopic.php?topic_id=13437&forum=37請睇睇!

2007-05-30 09:25:37 補充：
參考資料:http://www.in-photoart.com/modules/newbb/viewtopic.php?topic_id=13437&forum=37