Home
SearchSearch MemberlistMemberlist RegisterRegister ProfileProfile Log in to check your private messagesLog in to check your private messages Log inLog in

Zeiss Visionar
View previous topic :: View next topic  


PostPosted: Thu Jan 27, 2011 11:00 am    Post subject: Zeiss Visionar Reply with quote

Strange beast usable full frame. 1.6/92mm. Used hend-held so surely some tilt/shift effect.









PostPosted: Thu Jan 27, 2011 12:04 pm    Post subject: Reply with quote

Looks nice apart from some contrast loss (maybe it was used handheld). What lens is this, do you have some photos of it?


PostPosted: Thu Jan 27, 2011 12:13 pm    Post subject: Reply with quote

I am pretty sure this is the same thing: Click here to see on Ebay.de . Mine is marked Zeiss Jena 1Q but here we can't tell what's on the left. This is rear element on the photo. In front there is much bigger one Smile. Contrast is low true.


PostPosted: Thu Jan 27, 2011 12:16 pm    Post subject: Reply with quote

Thanks! I don't know the optical scheme of the lens, but in the past many projection lenses were of the Petzval type. Could this lens be of the Petzval type too?


PostPosted: Thu Jan 27, 2011 12:36 pm    Post subject: Reply with quote

Sadly i didn't pay enough attention to design when cleaning condensation between elements but i am sure there are at lease two on both ends so you might be right.

Lens is cool since it covers FF and little beyond (like 1.2x). That makes it very useful for TS adaptation. If you remove middle barrel and join front and back parts together directly you get a bit wider angle without additional distortion (check photos before after).

One would need to cut away 2mm material on the back for easier TS use. Now if you glue back of lens with EOS / M42 adapter without any space that gives you exactly infinity.




PostPosted: Thu Jan 27, 2011 8:54 pm    Post subject: Reply with quote

#5 bokeh clearly speaks for a Petzval design.


PostPosted: Thu Jan 27, 2011 9:55 pm    Post subject: Reply with quote

Indeed, I have seen quite a few Petzval shots in the last few weeks, and it looks like it.

Is it useful for TS adaptations? I think that the "swirlies" will get more severe when the lens is moved out of the optical axis.


PostPosted: Thu Jan 27, 2011 10:22 pm    Post subject: Reply with quote

Very interesting indeed.

You may even be able to create a focusing mount for that.


PostPosted: Wed Aug 15, 2012 4:51 pm    Post subject: Reply with quote

Hi guys,

sorry to disappoint you, but the Visionar is a 6 lens / 6 element Gauss type, where the usually cemented 2nd and 3rd element were split into single lenses to create further "air space" between the lenses which was be used to further correct and improve coma and astigmatism.

A scan of the cross section can be found on page 55 of the Carl zeiss Jena Yearbook 1960, Part 1, when this series of powerfull high aperture lenses was first announced. The top of the range Visionar is the 1 : 1,9 / 200 mm with a 4.1" front element, quite impressive.
The resolution of the Visionar is good enogh for high ISO digital Bodies, it is about 10 m within the 20mm center circle and gradually falls off to 20 m at the edge of a 30mm circle. It was designed for 35 mm projection (large cinemas, drive in typ etc.) format with approx 18 x 24 mm, half of the full frame Leica format.

Anybody interested in more details please feel free to contact me.

Georg

Divisional Director of Carl Zeiss Vision, retired


PostPosted: Wed Aug 15, 2012 6:00 pm    Post subject: Reply with quote

Great info Georg, thanks.

I have the 1.9/168 Visionar and it is very large and heavy, hard to hand hold but it works.

Sadly mine had lots of fungus and although I managed to clean it, the golden coloured coatings on the rear surface have been mostly etched away. I haven't managed to get really sharp results from it.


PostPosted: Sat Aug 18, 2012 10:52 am    Post subject: Reply with quote



Here's a cross section

Rgds
Georg


PostPosted: Sat Aug 18, 2012 12:56 pm    Post subject: Reply with quote

Cheers Georg, very interesting.


PostPosted: Sat Aug 18, 2012 1:09 pm    Post subject: Reply with quote

Many thanks Georg!


PostPosted: Sat Aug 18, 2012 1:40 pm    Post subject: Reply with quote

carlzeissjena wrote:


Georg

Divisional Director of Carl Zeiss Vision, retired


How cool! welcome to the forum Georg! We have a pretty strong base of Zeiss lovers here! Very Happy


PostPosted: Sun Aug 19, 2012 6:57 am    Post subject: Reply with quote

The SMC Takumar 1.8/85 have also this Visionar lens design also the Pancolar 1.4/75 (but 7 elements)



PostPosted: Sun Aug 26, 2012 3:27 pm    Post subject: Reply with quote

Dear all,

took some strong textile tape and bonded one of my Visionar s , the 1,9 / 141 onto the M39 Adapter of my NEX
to make some quick shots:
Pict with bird, managed to get the razor thin focus on the eye
Pict focus on edge of oil painting canvas
Pict plain white wall, out of focus in search of vignetting
Two pict. of lens and body to show how...


[url=http://forum.mflenses.com/userpix/20128/big_5954_IMG_7605_1.jpg][img]http://forum.mflenses.com/userpix/20128/5954_IMG_7605_1.jpg[/img][/url]
[url=http://forum.mflenses.com/userpix/20128/big_5954_IMG_7606_1.jpg][img]http://forum.mflenses.com/userpix/20128/5954_IMG_7606_1.jpg[/img][/url].
[url=http://forum.mflenses.com/userpix/20128/big_5954_best_1.jpg][img]http://forum.mflenses.com/userpix/20128/5954_best_1.jpg[/img][/url]
[url=http://forum.mflenses.com/userpix/20128/big_5954_best2_1.jpg][img]http://forum.mflenses.com/userpix/20128/5954_best2_1.jpg[/img][/url]
[url=http://forum.mflenses.com/userpix/20128/big_5954_Abfall_1.jpg][img]http://forum.mflenses.com/userpix/20128/5954_Abfall_1.jpg[/img][/url]

As the lens has no aperture all at 1:1,9, quite amazing with 50 l/mm resolution in the 20mm center circle and
no obvious color fringing at the light/dark borders and no serious vignetting effect towards the corners.
This would not be possible with 3 or 4 lenses only.

Think I have to make a fokus adapter for this lens next....

Georg


PostPosted: Sun Aug 26, 2012 6:57 pm    Post subject: Reply with quote

carlzeissjena wrote:
Dear all,

took some strong textile tape and bonded one of my Visionar s , the 1,9 / 141 onto the M39 Adapter of my NEX
to make some quick shots:
Pict with bird, managed to get the razor thin focus on the eye
Pict focus on edge of oil painting canvas
Pict plain white wall, out of focus in search of vignetting
Two pict. of lens and body to show how...



.




As the lens has no aperture all at 1:1,9, quite amazing with 50 l/mm resolution in the 20mm center circle and
no obvious color fringing at the light/dark borders and no serious vignetting effect towards the corners.
This would not be possible with 3 or 4 lenses only.

Think I have to make a fokus adapter for this lens next....

Georg


PostPosted: Fri Sep 06, 2013 1:18 am    Post subject: Reply with quote

Some useful information here. thanks guys.
I got Rathenower brand, Visionar 119/1,9
mounted on NEX5, no aperture
1


2


3


PostPosted: Fri Sep 06, 2013 1:50 am    Post subject: Reply with quote

Nice shots, shows the excellent IQ of the Visionar. I just wish I had a smaller one that the colossal 162mm one i have, it's so big and heavy I never use it.


PostPosted: Fri Sep 06, 2013 10:07 am    Post subject: Reply with quote

Bokeh rocks! Nice shots.