x*y
2 楼
值得入么? 看了样片感觉最远的600mm段紫边相当严重啊。
s*3
5 楼
我更想买个Sigma contemporary 150-600的,据说比腾龙的好
s*3
7 楼
这里说sigma在600端更锐,而且extender compatible
http://www.the-digital-picture.com/News/News-Post.aspx?News=152
【在 b*****s 的大作中提到】
: 这个不如腾龙
: 腾龙的素质处于适马CS之间,网上我看到的人评价
http://www.the-digital-picture.com/News/News-Post.aspx?News=152
【在 b*****s 的大作中提到】
: 这个不如腾龙
: 腾龙的素质处于适马CS之间,网上我看到的人评价
b*r
8 楼
At 600mm, the Tamron has a very slight center-of-the-frame advantage and
the Sigma has a larger corner-of-the-frame advantage.
不知道你怎么看的
【在 s******3 的大作中提到】
: 这里说sigma在600端更锐,而且extender compatible
: http://www.the-digital-picture.com/News/News-Post.aspx?News=152
the Sigma has a larger corner-of-the-frame advantage.
不知道你怎么看的
【在 s******3 的大作中提到】
: 这里说sigma在600端更锐,而且extender compatible
: http://www.the-digital-picture.com/News/News-Post.aspx?News=152
s*3
9 楼
我是这么和这么看的:
Stopping down to f/8 reduces most of the sharpness advantages one lens has
over the other. The Sigma has sharper corners at 150mm and 500mm, but the
Tamron has sharper corners at 400mm. The Sigma is noticeably sharper at
600mm, especially in the mid and peripheral portions of the image circle.
…
Which lens is better?
I don't think that there is a right or wrong answer here, but I lean
slightly toward the Sigma, partially because these lenses are going to most
frequently be bought for and used at the 600mm focal length and, at least at
f/8, the Sigma holds the optical advantage at 600mm.
【在 b****r 的大作中提到】
: At 600mm, the Tamron has a very slight center-of-the-frame advantage and
: the Sigma has a larger corner-of-the-frame advantage.
: 不知道你怎么看的
Stopping down to f/8 reduces most of the sharpness advantages one lens has
over the other. The Sigma has sharper corners at 150mm and 500mm, but the
Tamron has sharper corners at 400mm. The Sigma is noticeably sharper at
600mm, especially in the mid and peripheral portions of the image circle.
…
Which lens is better?
I don't think that there is a right or wrong answer here, but I lean
slightly toward the Sigma, partially because these lenses are going to most
frequently be bought for and used at the 600mm focal length and, at least at
f/8, the Sigma holds the optical advantage at 600mm.
【在 b****r 的大作中提到】
: At 600mm, the Tamron has a very slight center-of-the-frame advantage and
: the Sigma has a larger corner-of-the-frame advantage.
: 不知道你怎么看的
b*r
10 楼
这是stop down 到F8以后,600mm这么长还要缩这么多光圈,你的安全快门怎么办?
其实基本上什么镜头什么焦段,说到底关键还是全开效果
most
【在 s******3 的大作中提到】
: 我是这么和这么看的:
: Stopping down to f/8 reduces most of the sharpness advantages one lens has
: over the other. The Sigma has sharper corners at 150mm and 500mm, but the
: Tamron has sharper corners at 400mm. The Sigma is noticeably sharper at
: 600mm, especially in the mid and peripheral portions of the image circle.
: …
: Which lens is better?
: I don't think that there is a right or wrong answer here, but I lean
: slightly toward the Sigma, partially because these lenses are going to most
: frequently be bought for and used at the 600mm focal length and, at least at
其实基本上什么镜头什么焦段,说到底关键还是全开效果
most
【在 s******3 的大作中提到】
: 我是这么和这么看的:
: Stopping down to f/8 reduces most of the sharpness advantages one lens has
: over the other. The Sigma has sharper corners at 150mm and 500mm, but the
: Tamron has sharper corners at 400mm. The Sigma is noticeably sharper at
: 600mm, especially in the mid and peripheral portions of the image circle.
: …
: Which lens is better?
: I don't think that there is a right or wrong answer here, but I lean
: slightly toward the Sigma, partially because these lenses are going to most
: frequently be bought for and used at the 600mm focal length and, at least at
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