PF Holiday Loyal Site Supporter Special | December Pentax Lens Tournament

Prince Harbinger · 10-31-2020, 08:08 PM

Thinking about purchasing this Carl Zeiss Jena Tessar 5cm f/2.8 Exakta mount from 1937. I'm drawn by the build and age. I really like how small it is. I also don't currently own any lenses from this time period. However, I'm not sure how it renders, or if it's even worth buying. I was hoping someone here could share their personal experience with this lens, and their thoughts about it. I also would like to know if it's really hard to service? I would like to clean the optics of some haze near the outer edges. I have the tools, and have done some lenses from the 50's on up.

Here's some photos of the lens.

Dropbox - Screenshot_20201031-225826_eBay.jpg - Simplify your life

Dropbox - Screenshot_20201031-225828_eBay.jpg - Simplify your life

Dropbox - Screenshot_20201031-225830_eBay.jpg - Simplify your life

Dropbox - Screenshot_20201031-225832_eBay.jpg - Simplify your life

Dropbox - Screenshot_20201031-225833_eBay.jpg - Simplify your life

**mlt** · 10-31-2020, 09:33 PM

Are you planning on adapting it to k-mount or just keeping it as a relic? The registration difference means either an adapter with a glass element, which probably negates any Zeiss Tessar goodness, or some serious metalwork.

Prince Harbinger · 10-31-2020, 10:14 PM

Originally posted by mlt

Are you planning on adapting it to k-mount or just keeping it as a relic? The registration difference means either an adapter with a glass element, which probably negates any Zeiss Tessar goodness, or some serious metalwork.

I wanted to mount it to my nex camera. Via Exakta to Nex adaptor.

**mlt** · 10-31-2020, 11:17 PM - **1 Like**

Originally posted by Prince Harbinger

I wanted to mount it to my nex camera. Via Exakta to Nex adaptor.

That should be an easy combo then. Unless it has fungus or dried lubricants in the focus helical and aperture blades should produce nice results

10-31-2020, 08:08 PM	#1
Prince Harbinger Pentaxian Join Date: Jul 2018 Location: New Jersey Posts: 379	Carl Zeiss Jena Tessar 5cm f/2.8 Exakta mount Thinking about purchasing this Carl Zeiss Jena Tessar 5cm f/2.8 Exakta mount from 1937. I'm drawn by the build and age. I really like how small it is. I also don't currently own any lenses from this time period. However, I'm not sure how it renders, or if it's even worth buying. I was hoping someone here could share their personal experience with this lens, and their thoughts about it. I also would like to know if it's really hard to service? I would like to clean the optics of some haze near the outer edges. I have the tools, and have done some lenses from the 50's on up. Here's some photos of the lens. Dropbox - Screenshot_20201031-225826_eBay.jpg - Simplify your life Dropbox - Screenshot_20201031-225828_eBay.jpg - Simplify your life Dropbox - Screenshot_20201031-225830_eBay.jpg - Simplify your life Dropbox - Screenshot_20201031-225832_eBay.jpg - Simplify your life Dropbox - Screenshot_20201031-225833_eBay.jpg - Simplify your life

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10-31-2020, 09:33 PM	#2
mlt Site Supporter Join Date: Dec 2007 Location: Meridian, Idaho Posts: 857	Are you planning on adapting it to k-mount or just keeping it as a relic? The registration difference means either an adapter with a glass element, which probably negates any Zeiss Tessar goodness, or some serious metalwork.

10-31-2020, 10:14 PM	#3
Prince Harbinger Pentaxian Join Date: Jul 2018 Location: New Jersey Posts: 379 Original Poster	Originally posted by mlt Are you planning on adapting it to k-mount or just keeping it as a relic? The registration difference means either an adapter with a glass element, which probably negates any Zeiss Tessar goodness, or some serious metalwork. I wanted to mount it to my nex camera. Via Exakta to Nex adaptor.

10-31-2020, 11:17 PM - 1 Like	#4
mlt Site Supporter Join Date: Dec 2007 Location: Meridian, Idaho Posts: 857	Originally posted by Prince Harbinger I wanted to mount it to my nex camera. Via Exakta to Nex adaptor. That should be an easy combo then. Unless it has fungus or dried lubricants in the focus helical and aperture blades should produce nice results

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