图说苏联菲特相机的F2.8标头

kievuser

糙米 发表于 2014-5-9 16:05
坊间传闻说这茵-61镜头用了啥澜系玻璃，为预防辐射，就搞点秘方药水浸泡一下吧。 ...

估计苏联的I-50镜头也用了较好的玻璃？分辨率指标与I-61相近。个人感觉早期的熊猫版I-61的质量好像更好。镀膜似乎反光较弱。

kievuser

糙米 发表于 2014-7-29 19:54
加了后缀L/D字符的是否用了澜系玻璃，这个真不好确定，似乎目前还没见到官方直接的证据吧？ ...

我的印象中后期的I-61 L/D 也都是用了镧系玻璃镜片。我看看在那些苏联相机网站能否找到出处。

你说的有道理。好像早期的I-61都是熊猫版的。

kievuser

kievuser 发表于 2014-8-2 13:26
我的印象中后期的I-61 L/D 也都是用了镧系玻璃镜片。我看看在那些苏联相机网站能否找到出处。

你说的有 ...

This lens replaced its predecessor Industar-26m as a standard lens on the FED-3 and all later FED cameras. The optical design was improved, and a new, Lanthanum glass was used (letter L is for Lanthanum, D is for Dal'nomer - Rangefinder.

This is the newest multicoated LTM lens made by the Soviet (now Ukrainian) photo industry. It is sharp and contarsty, with smooth focusing action and the aperture click-stops.

It is still in production by FED factory in Kharkov, Ukraine. The lens was also made in universal 42mm mount for Zenit cameras, its name was Industar-61L/Z.




在USSRPHOTO.com 网站找到的一段介绍。 l说明是用了镧系玻璃。D的意思是旁轴相机用的。而且I-61还是多层镀膜的镜头哪。

kievuser

This lens replaced its predecessor Industar-26m as a standard lens on the FED-3 and all later FED cameras. The optical design was improved, and a new, Lanthanum glass was used (letter L is for Lanthanum, D is for Dal'nomer - Rangefinder.

This is the newest multicoated LTM lens made by the Soviet (now Ukrainian) photo industry. It is sharp and contarsty, with smooth focusing action and the aperture click-stops.

It is still in production by FED factory in Kharkov, Ukraine. The lens was also made in universal 42mm mount for Zenit cameras, its name was Industar-61L/Z.

根据以上说法，I-61 是多层镀膜的，用了镧系玻璃的镜头。L表示用了镧系玻璃，D表示是旁轴相机用的。

kievuser

鱼与熊掌 发表于 2014-8-7 00:35
可能有这种说法，但是没听说过别的镜头优化以后焦距变了的。。。

可能后期采用的玻璃材料不一样了。或许为了降低成本？ 当年去俄罗斯时商店里还能见到全新的FED-5。记得才相当于100多元人民币。