这物件儿新的让熊牙痒！

资料。

尼康ULtra Micro Lens的资料。

这种早期款的起点单反现在很少见了。

再亮亮我稀有的苏联早期起点牌单反。机身号- 5800366. 本帖最后由 Kievuser 于 2015-4-29 19:26 编辑

我记得在中华相机网见过华光65/1:0.82的，卖390，还有更大的，大光圈提高了亮度，我猜是为了提高工业灵敏度

好像是这样，我拿毛玻璃试了下，只能覆盖135画幅，唯一不解的是为何要设计f1.2的大光圈？

我猜是X射线之类的工业镜头，为了缩短轴向距离设计了极短的相面定位距，成像也只保证很小的靶面

在旧电器市场淘的，不太像是放映头。没光圈没调焦不可怕，最让人头疼的是这个头的成像焦平面特别短，快贴到镜头后口了，加调焦环和光圈环都没足够距离。

很久没见罗大侠了。最近很少来无忌。 我猜可能是电影放映头？能到你手里可能与电影有点关系？81毫米的焦距精确标出很有意思。

今天收了个kowa大光圈镜头，无光圈无调焦，楼主给俺看看是个什么头？

当年在其中的一个珠宝店看见了苏联时期的古董相机。

威尼斯圣马可广场

一些早期国产电影摄影镜头。

知道了谢

你好，我对劳动牌镜头一无所知啊。呵呵。

漂亮！这些精密又精美的仪器是艺术品。

Kievuser 前辈对我所引用的神秘提问中提及的镜头不知是否了解

我认为此头用于工业生产，科研、交通物流等民用领域，但在保证口径的前提下增大焦距，则用于军事的微光和夜视，当然不是便携式的，高成本就不可避免了

我的全金属+全手动+精密仪器：

非常感谢小牛角网友的解惑。 手里有几只国产头。不知是何用途。不知道此头具体是在什么场合用的？

http://wenda.tianya.cn/question/362b9e73c1b6aa28

这位神秘人物所提及的特种镜头迷雾重重重哪位大侠给指点一二三

和K陈年前辈探讨啊－－－此头是工业用大动态照度范围微光电视镜头，并非军用设备

谢谢分享。老麻雀有不少漂亮的金属精密仪器啊。

Ultra-Micro-NIKKOR 1:1.8 f=28mm e-line type        Ultra-Micro-NIKKOR 1:1.8 f=28mm h-line type        Ultra-Micro-NIKKOR 1:1.8 f=28mm ew-line type
Focal Length: 27.5mm
maximum Aperture: f/1.8
Lens Construction: 9 elements in 7 groups
Standard Magnification: 1/10X
Picture Angle: 7.6°
Overall working distance: 315mm
Object area:- 40mm
image area:- 4mm
Standard wavelength: 546 millimicron (e-line)
Aperture efficiency at image corner: 100% @ f/1.8 with 0% vignetting score
Distortion: -0.06%
Aerial resolving power: 700lines/mm
Aperture scale: f/1.8, f/2, f/2.8, f/4, f/5.6, f/8
Lens Mount: Screw d=39mm p=1/26"
Dimension (D) X (L):- 51mm x 70mm
Filter thread size: 40.5mm screw-in type
Weight:- 310g/10.9oz        Focal Length: 27.6mm
maximum Aperture: f/1.8
Lens Construction: 9 elements in 7 groups
Standard Magnification: 1/10X
Picture Angle: 7.6°
Overall working distance: 315mm
Object area:- 40mm
image area:- 4mm
Standard wavelength: 404.7 millimicron (h-line)/435nm (g-line)
Aperture efficiency at image corner: 100% @ f/1.8 with 0% vignetting score
Distortion: -0.04%
Aerial resolving power: 900 lines/mm
Aperture scale: f/1.8, f/2, f/2.8, f/4, f/5.6, f/8
Lens Mount: Screw d=39mm p=1/26"
Dimension (D) X (L):- 51mm x 71.5mm
Filter thread size: 40.5mm screw-in type
Weight:- 310g/10.9oz        Focal Length: 28.2mm
maximum Aperture: f/1.8
Lens Construction: 9 elements in 7 groups
Standard Magnification: 1/10X
Picture Angle: 7.6°
Overall working distance: 315mm
Object area:- 80mm
image area:- 8mm
Standard wavelength: 546.1 millimicron (e-line)
Aperture efficiency at image corner: 100% @ f/1.8 with 0% vignetting score
Distortion: -0.02%
Aerial resolving power: 600lines/mm @8mm,
650 lines/mm @7mm, 700 lines/mm@6mm
Aperture scale: f/1.8, f/2, f/2.8, f/4, f/5.6, f/8
Lens Mount: Screw d=39mm p=1/26"
Dimension (D) X (L):- 51mm x 70mm
Filter thread size: 40.5mm, p=0.5mm
Weight:- 330g
The above outlines the few major versions of the Ultra-Micro-NIKKOR 1:1.8 f=28mm with different line types. The ew-line model, according to the literature, quoted as the improved version. It was also used in the making of photomarks via step and repeat process in large-scale Integrated circuitry manufacturing. The lens mount and working distance of the model has been mentioned were identical to previous model. But the image size has been enlarged from 4mm to 8mm (image circle). The ew-line model has the same resolution, up to 600 lines/mm even at image size of 8mm covering picture area of 5.6mm square.

尼康工业镜头资料。
2013-05-11 12:50
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航海天文钟，德国产

独一无二的国产电影摄影变焦头。

那是当然了，总想进一台，就是价格太贵。

苏联的Contax-II.

谢谢分享。
据说尼康早期旁轴的收藏价格很高。