Hello all,
So I've tried searching all over this forum but can't seem to find any info on the Zeiss 120mm 4.5 Tessar's. I'm pretty sure it was designed for the 6x9 folder's back in the day which will mean vignetting on 4x5 which I am totally fine with. But I'm curious if anyone knows of a site, or has personal info on image circle, history, general specs for the lens.
Any help would be great. Thanks.
VM: Series 1c Tessar, 1906, f4.5, one focal length mentioned is 4.75" (120mm). Suggested to use 6" for 4x5 and 16" for 8x10. I've never personally seen a camera with a 120mm Tessar, but then I haven't seen all the cameras out there.
See http://www.cameraeccentric.com/html/info/zeiss_3.html , p.23. Not for 6x9, normal for that format is around 100 mm. In metric, 6.5 x 11. In imperial, 2 1/2 x 3 1/2.
http://www.cameraeccentric.com/html/info/zeiss_3.html page 23 has the f/4.5 Tessars. It lists a 5.5" image circle (odd that Zeiss would list that in inches), for about 140mm. The usual "best guess if you don't have the actual data for that lens" image circle calculation for any given Tessar is 1.1x the focal length, for 132mm, so either way, it'll vignette on your 4x5.
https://www.flickr.com/photos/drew_saunders/
Ok thank you so much for the info everyone.
That camera eccentric is awesome!
It's essentially this same lens, only in 120 instead of the 105. Not sure what it came off of as they are usually 105's. The guy I'm buying it from had both the 105 and the 120mm.
Hi guys, so I thought I would update what I found out with the Zeiss 120 4.5 lens. It showed up today and I shot a few sheets. Front standard was zeroed but I did swing the rear, and there was not only no vignetting, but there wasn't really any noticeable falloff. I was actually hoping for some vignetting with this lens, but it is a nice lens regardless, especially considering the price I paid.
I will articulate the front standard next go round and post updates of my findings later...
*pics taken with a Fujifilm X100 @f/2 & iso 1600
Last edited by Cornelius; 28-Feb-2013 at 22:25. Reason: spelling
Rear movements place no demands on a lenses coverage. While you may not get vignetting, it's pretty doubtful that a Tessar of this focal length and aperture will give sharp corners on 4x5 at any aperture.Originally Posted by Cornelius
Hi guys, so I thought I would update what I found out with the Zeiss 120 4.5 lens. It showed up today and I shot a few sheets. Front standard was zeroed but I did swing the rear, and there was not only no vignetting, but there wasn't really any noticeable falloff. I was actually hoping for some vignetting with this lens, but it is a nice lens regardless, especially considering the price I paid.
I will articulate the front standard next go round and post updates of my findings later...
*pics taken with a Fujifilm X100 @f/2 & iso 1600
One man's Mede is another man's Persian.
A few German manufacturers offered their 6.5x9cm cameras with an option of a 120mm Tessar instead of a 105mm lens, KW sold them with their 6.5x9 Patent Etui.
As stated above edge and corner sharpness won't be that good, a 135 Tessar only just covers 5x4 and corner sharpness just starts to come in at f16 and is fine by f22.
Ian
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