西安哪里能买到蔡司的头?

色彩，FUJI200 VED扫
色彩不是很好评判，特别是负片+扫描，更大因素可能再冲洗。我这个21还没吃过反转呢，因为找到的这家lab只能做C41的，而且冲洗非常好，弄的我都没用反转的欲望了。

竖拍，距离1米

21的遮光罩其实是那个方形的，标识了21/2.8和25/2.8，见此连接
http://www.bhphotovideo.com/c/product/361532-REG/Zeiss_1365665_Lens_Hood_for_21mm.html

我买的是圆形的，标识是28/2.8和25/2.8，我问过那个tom－A，他用的是这个圆形的，因为遮挡取景器少，而且没发现暗角增加，我也就买了这个。我想因为这个21光圈只有4.5，所以遮光罩缩点水也没有影响吧。遮光罩见此连接
http://www.bhphotovideo.com/c/product/361533-REG/Zeiss_1365666_Lens_Hood_for_25mm.html

mhi兄，不知是否有参考价值，只要我知道会都慢慢贴上来。

这张也是近摄，2米不到吧，看的出来是21mm吗

再靠边一点，能看出轻微的变形，人物被拉宽了，这个应该属于透视变形。不能再边了，再边变形会更明显

近摄，人物在2/3处，变形控制不错，广角最怕把人放边上

请问楼主: 遮光罩是厂家指定用这个圆形的么?  貌似官网上面21头有两种遮光罩, 但是也没有说哪个是给4.5这只用的.

太阳位置大家能看到，进入市场中扁右，此时无玄光。

太阳恰好在右上角，视场的边缘，仍然有玄光

上3张逆光的，看看玄光控制，这张出现玄光，太阳位置在右上角视场之外，遮光罩为原型金属遮光罩，25/2.8的那个，不是那个21方的。问了那个Tom A,这个圆形遮光罩遮挡取景器少且没有暗角影响。

一直很关注这个头,可惜少人用,看到的片子也不多;等待LZ的更多片子作参考。

是的，而且尺寸非常小，E46，比LEICA M 28/2.8 e46还小

这个头真是很棒，刨去2.8光圈因素，觉得比leica 21/2.8asph那是太值了

周末进林子转了一圈

看来有这个镜头的人太少了，等申请了主体管理，我就把俱乐部改成小窝棚

21mm[stockholmfm 编辑于 2008-10-12 12:25]

21毫米的表刚，这样头个个是精品！

真的很小啊

ＺＭ镜头其实很强的，可惜拥有ＺＩ系统的人太少了，真是挺遗憾的

关于镜头的一些摘抄，EP老人家的：
With the Contarex line of lenses, Zeiss wanted to create the Hasselblad-like system in 35mm format. The lenses were carefully colour corrected and were evidently designed to emulate the pictorial smoothness of the medium format imagery.
The new ZM lenses stay into this tradition and the main overall impression when looking at the slides is an association with medium format imagery.
The slides do possess that fine quality of smooth tonal resolution that is the characteristic of large format pictures.

【Elmarit-M 2.8/21 ASPH and Biogon 2.8/21mm and C-Biogon 4.5/21mm】

Can we see differences between the lens design with and without aspherical surfaces? If there is a difference, it can be found in the curvature of field, which is better in the Zeiss version. And the contrast wide open which is better in the Leica version. The digital images show the same type of quality difference that has been reported in the film based images. The Biogon 4.5/21 should be pronounced the winner in this contest. This lens exhibits excellent behaviour at all apertures and field positions. It has an 'unfair' advantage of 1.5 stops of course, but if you can live with this, the lens itself can hardly be faulted. Stopped down is f/11 for all three lenses.

虽然不能全信，就算是一点介绍吧。

spec

MTF

Carl Zeiss ZM C biogon T* 21mm F4.5
用21的人不多，用这个头的更人少，因为是个好头，开个俱乐部。
除了成像质量高，尺寸还非常小，小到调焦环都很窄。关于镜头的一些摘抄，EP老人家的：
With the Contarex line of lenses, Zeiss wanted to create the Hasselblad-like system in 35mm format. The lenses were carefully colour corrected and were evidently designed to emulate the pictorial smoothness of the medium format imagery.
The new ZM lenses stay into this tradition and the main overall impression when looking at the slides is an association with medium format imagery.
The slides do possess that fine quality of smooth tonal resolution that is the characteristic of large format pictures.

【Elmarit-M 2.8/21 ASPH and Biogon 2.8/21mm and C-Biogon 4.5/21mm】

Can we see differences between the lens design with and without aspherical surfaces? If there is a difference, it can be found in the curvature of field, which is better in the Zeiss version. And the contrast wide open which is better in the Leica version. The digital images show the same type of quality difference that has been reported in the film based images. The Biogon 4.5/21 should be pronounced the winner in this contest. This lens exhibits excellent behaviour at all apertures and field positions. It has an 'unfair' advantage of 1.5 stops of course, but if you can live with this, the lens itself can hardly be faulted. Stopped down is f/11 for all three lenses.

虽然不能全信，就算是一点介绍吧。[stockholmfm 编辑于 2008-10-17 07:17]