Author Topic: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)  (Read 2496 times)

John Geerts

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Re: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)
« Reply #30 on: May 16, 2020, 08:31:45 »
If your lenses are M39 thread and made for Russian SLR like my version they can only be used for close distance on a F-mount body. But using a M39 to M42 ring (it is a ring without any flange) and then a M42 adapter for Z-mount it can focus to about 10m or so.
There is a direct M39-Z adapter   https://www.kentfaith.com/KF06.389_m39-lenses-to-nikon-z-mount-camera-adapter

MEPER

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Re: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)
« Reply #31 on: May 16, 2020, 08:53:25 »
There is a direct M39-Z adapter   https://www.kentfaith.com/KF06.389_m39-lenses-to-nikon-z-mount-camera-adapter

I have one of those adapters. It is for LTM (like Leica rangefinder lenses) and it works perfect using a e.g. Jupiter-8 50/2 lens which is a rangefinder lens. But the M39 Helios 44 I have is not a rangefinder lens but a SLR lens so register distance does not fit using the adapter above. Some additional distance is needed.

MEPER

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Re: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)
« Reply #32 on: May 16, 2020, 13:19:28 »
I found out with some google search the different lens registrations:

M42 adapter: 45.46 mm
M39 Soviet SLR lenses: 45.2 mm
LTM (39 mm): 28.8 mm
T2 adapter: 55 mm

The above confirms using a M39 Helios-44 using M42 adapter via a M39-M42 ring that it is 0.26 mm from reaching infinity focus. 

Petr sheepeck Jůza

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Re: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)
« Reply #33 on: May 19, 2020, 00:10:05 »
Should I go or not..... Small boy pondering following his older brother.  :-)


Petr sheepeck Jůza

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Re: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)
« Reply #34 on: May 22, 2020, 22:31:04 »
Swirly character.

CS

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Re: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)
« Reply #35 on: May 22, 2020, 22:55:19 »
Is that a glass background, or am I looking at lens bokeh?
Carl

golunvolo

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Re: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)
« Reply #36 on: May 22, 2020, 23:58:52 »
Those are beautiful portraits. Marks the character and emotions.

Petr sheepeck Jůza

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Re: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)
« Reply #37 on: May 22, 2020, 23:59:26 »
Bokeh. There is a tree on the right side. The bark looks interesting, doesn’t it?

CS

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Re: Carl Zeiss Jena Biotar 58mm f/2 (picture heavy!)
« Reply #38 on: May 23, 2020, 00:31:40 »
Bokeh. There is a tree on the right side. The bark looks interesting, doesn’t it?


Yes.




Carl