The Tessar 1c has a beautiful signature wide open at f/4.5 and is one of my favorite lenses. You say you're using a Norma. Get a Sinar/Copal shutter and you have all you need. I frequently see Tessar 1c's marked 5x7 or 5x8. They'll have a focal length somewhere around 210mm or 8 1/4", perfect for a portrait length for 4x5.

The Tessar 1c has a beautiful signature wide open at f/4.5 and is one of my favorite lenses. You say you're using a Norma. Get a Sinar/Copal shutter and you have all you need. I frequently see Tessar 1c's marked 5x7 or 5x8. They'll have a focal length somewhere around 210mm or 8 1/4", perfect for a portrait length for 4x5.

2024年3月5日 · The Tessar is a camera and projection lens designed by Paul Rudolph, working for the Carl Zeiss Jena company, in 1902. It is normally used as a standard lens, and versions of it have been fitted to many millions of cameras.

天塞镜头的基本结构为四片三组式，前组为 重钡冕石 单凸透镜，中组为 燧石 单凹透镜，后组为一燧石凹透镜和一钡冕石凸透镜贴合在一起而成的胶合双镜组。 光圈安放在后组透镜之前。 天塞镜头是20世纪初光学技术和计算科学进步的产物。 天塞镜头解像力高、反差强烈、畸变很小，而且对球面相差、色差、像散有良好的校正。 二、 天塞（Tessar）结构镜头的发展历程. 二战前配天塞镜头的相机就已大量面世了，如1937年最出名的禄来福莱克斯的AutoMat上配备的就 …

天塞镜头的基本结构为四片三组式，前组为重钡冕石单凸透镜，中组为燧石单凹透镜，后组为一燧石凹透镜和一钡冕石凸透镜贴合在一起而成的胶合双镜组。 光圈 安放在后组透镜之前。 天塞镜头对球面相差、色差、像散有良好的校正，是最常见的中档次镜头 [1] 天塞镜头（Tessar）是非对称式正光镜头的一种重要品种。 最早为蔡司公司的保罗·鲁道夫於1902年根据他自己设计的四片四组式乌那镜头（Unar）改制而成，（不是改自库克三片式镜头）。 天塞镜头的基本结构为四片 …

2014年2月20日 · Appears B&L manufactured the Tessar under license from Zeiss, pre World War 1. I think it was originally meant for one of the Graflexes - perhaps one of the reflexes - 3 1/4 x 4 1/4 on the lens, it has the aperture but no shutter. f/4.5 is the max aperture, as you see there is no focal length engraved on the lens. Samples?

2017年3月12日 · I've come across the Bausch and Lomb Tessar series 1c f4.5, does anyone have experience of using this lens? Most of the ebay listings I see for this lens come without a shutter, what shutter would I need for this lens?

2014年2月20日 · Posted: Sun Apr 15, 2012 7:37 pm Post subject: Tessar 1c Bausch & Lomb Nesster wrote: Bellows, on a K100D. The 1c doesn't mention Zeiss so it is after WW1 started, so I'm thinking this is from the 1920s.

2003年1月7日 · It's a 5x7 Bausch and Lomb Tessar Series 1c (Pat 1903), f 32 - f 4.5. It is on a mounting flange with 5 screw holes. Is this an enlarger lens or a camera lens (or both)?

This is a vintage Bausch and Lomb Tessar 1C 139mm E.F. f/4.5 Lens that is in excellent condition. Lens adjusts like it should and has no blemishes on the lens at all. Comes with the original lens case.