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Schneider Jsogon 4,5 40mm
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PostPosted: Wed Jul 03, 2013 7:49 pm    Post subject: Schneider Jsogon 4,5 40mm Reply with quote
I own a Schneider Jsogon 4,5 40mm; is there any connection with similar lenses like Meyer with same FL and speed? It has an awesone rendering, by the way...

Last edited by Ultrapix on Thu Jul 04, 2013 4:03 pm; edited 2 times in total


PostPosted: Wed Jul 03, 2013 7:51 pm    Post subject: Reply with quote
I don't see a connection between your lens and a Meyer Heliopan 40mm, except that it is a 40mm too.

Last edited by kds315* on Fri Aug 02, 2013 2:06 pm; edited 2 times in total


PostPosted: Wed Jul 03, 2013 7:53 pm    Post subject: Reply with quote
Laughing well, it's also a f: 4,5


PostPosted: Wed Jul 03, 2013 7:58 pm    Post subject: Reply with quote
Yes, also a f4.5 but I don't know of any connection.


PostPosted: Wed Jul 03, 2013 8:13 pm    Post subject: Reply with quote
Here http://www.exaktaphile.com/tests/mark.pdf it is mentioned in a test, pretty sharp it seems.


PostPosted: Wed Jul 03, 2013 8:22 pm    Post subject: Reply with quote
Here is a jap. site about that lens: http://spiral-m42.blogspot.de/2011/07/schneider-kreuznach-jsogon-isogon-40mm.html
claiming it to have a 4e/4g CELOR lens design, which is siliar to the Dialyte the Meyer Helioplan is.



And btw it is not a "Ysogon", but a "Jsogon", maybe this is why you did not find anything about it.


PostPosted: Wed Jul 03, 2013 8:31 pm    Post subject: Reply with quote
To say the truth I did find some info on the web a while ago, but don't know the Meyer; mine has a different shape though than the most common version, it's like this one:



PostPosted: Wed Jul 03, 2013 8:37 pm    Post subject: Reply with quote
Oh, we had that here:http://forum.mflenses.com/viewtopic.php?t=42188


PostPosted: Wed Jul 03, 2013 8:41 pm    Post subject: Reply with quote
Thanks Klaus, my copy is 42x1, and my only regret is that it interferes with my 5D MKIII mirror...


PostPosted: Thu Jul 04, 2013 9:54 am    Post subject: Reply with quote
here some samples:











crop 100%:







Slight sharpening, Olympus OMD-EM5


PostPosted: Thu Jul 04, 2013 2:51 pm    Post subject: Reply with quote
I have never seen a "macro" Jsogon before. Indeed the Jsogon I have does not look like yours. Can you show the name ring?


PostPosted: Thu Jul 04, 2013 3:06 pm    Post subject: Reply with quote
Oops, you are right Sad

I probably messed up with my 40 Macro Kilar...

Sorry.


PostPosted: Mon Aug 26, 2013 2:00 pm    Post subject: Reply with quote
Ultrapix wrote:
To say the truth I did find some info on the web a while ago, but don't know the Meyer; mine has a different shape though than the most common version, it's like this one:


Any chance of re-posting your image please? It seems to have disappeared...
Cheers
Brett


PostPosted: Mon Aug 26, 2013 2:20 pm    Post subject: Reply with quote
A nice sharp lens that Jsogon 40mm is, these taken at f5.6






PostPosted: Mon Aug 26, 2013 3:43 pm    Post subject: Reply with quote
Brett Rogers wrote:
Ultrapix wrote:
To say the truth I did find some info on the web a while ago, but don't know the Meyer; mine has a different shape though than the most common version, it's like this one:


Any chance of re-posting your image please? It seems to have disappeared...
Cheers
Brett


PostPosted: Mon Aug 26, 2013 3:44 pm    Post subject: Reply with quote
Welcome Brett! Nice to see you here too!


PostPosted: Tue Aug 27, 2013 2:29 am    Post subject: Reply with quote
Attila,
how are you?
You've inspired me to join up here at mflf...
Cheers
Brett

Last edited by Brett Rogers on Tue Aug 27, 2013 4:18 am; edited 1 time in total


PostPosted: Tue Aug 27, 2013 2:31 am    Post subject: Reply with quote
Attila wrote:
Welcome Brett! Nice to see you here too!

Thanks mate! It is good to be here. I visit often enough, figured it was about time I signed up.
Cheers
Brett


PostPosted: Tue Aug 27, 2013 2:33 am    Post subject: Reply with quote
kds315* wrote:
A nice sharp lens that Jsogon 40mm is, these taken at f5.6


Thanks for sharing these. Very nice. I have a Jsogon myself, but haven't used it yet. I guess it is about time I did something about that.
Cheers
Brett


PostPosted: Tue Aug 27, 2013 3:15 am    Post subject: Reply with quote
Klaus pointed to my post on this lens from a while back.

It is indeed a nice compact lens with excellent sharpness and rendering. I could be wrong, but I believe it was an early attempt at non-retrofocus wide angle option for early slr's - probably made first for the Exakta. Was there anything wider for the Exakta when it was introduced?

Best,

Paul


PostPosted: Fri Aug 30, 2013 4:20 pm    Post subject: Reply with quote
...

Last edited by Ultrapix on Sat Aug 31, 2013 11:50 pm; edited 1 time in total


PostPosted: Sat Aug 31, 2013 10:40 am    Post subject: Reply with quote
Ultrapix wrote:

(from web, not my lens)

Yes, I have previously noticed you have a habit of "borrowing" images from the web. Sometimes from people who would have happily let you use them, if you'd asked them first...
Here's a photo of my own example of the Jsogon. Taken with a crappy Samsung point and shoot. M42 mount. AUD $35 from a local market attached to a Praktica FX. Photo may look familiar to you.

Cheers
Brett
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