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UV-Nikkor 105mm -Does that have CA?
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PostPosted: Mon Jul 06, 2015 5:38 pm    Post subject: UV-Nikkor 105mm -Does that have CA? Reply with quote


Just wondered. Shot fully open ....

Last edited by kds315* on Thu Jul 09, 2015 8:59 am; edited 1 time in total


PostPosted: Mon Jul 06, 2015 6:13 pm    Post subject: Reply with quote
I tend to say "NO".


PostPosted: Mon Jul 06, 2015 6:55 pm    Post subject: Reply with quote
Well, I don't see any CA, impressive performer imho.

I happened to shoot this with an apochromatic lens a couple of days ago, for comparison's sakes. Rodenstock Magnagon 5.6/75 on NEX-3. This lens is supposedly an industrial version of the APO-Rodagon-D.



Last edited by iangreenhalgh1 on Mon Jul 06, 2015 9:56 pm; edited 1 time in total


PostPosted: Mon Jul 06, 2015 8:45 pm    Post subject: Reply with quote
I did clean thread, Thomas please keep your self your notes from Ian.


PostPosted: Mon Jul 06, 2015 9:41 pm    Post subject: Reply with quote
Nice photo!
Am I missing something or are you hiding the name of the lens from us?(For the moment, I mean)


PostPosted: Mon Jul 06, 2015 10:43 pm    Post subject: Reply with quote
Respectfully, it seems to have CA for my eyes.

Red at one side, green at the other, Lateral one?

Some apochromatic lenses are not perfect in the CA camp. Minimized it, yes. But without CA at all, no.

My Leica telyt 180/3,4 is not one of the better APO lenses- It has minimal CA in some circumstances, but it is there.

The longitudinal CA is very difficult to be in control, the red near OOF and the green far OOF, tend to stay more or less in almost all images. You can close the aperture, yes.


PostPosted: Tue Jul 07, 2015 3:04 am    Post subject: Reply with quote
By my eyes, no, I do not see much if any CA. Id say it looks like a good performer.

@iangreenhalgh1

That's a great shot with a seemingly great lens.


PostPosted: Tue Jul 07, 2015 7:05 am    Post subject: Reply with quote
It is a Nikon UV Nikkor 105mm I just got, making some tests with it.... Wink

This was shot fully open at f4.5.

Need to find a scientific target and repeat testing.


PostPosted: Tue Jul 07, 2015 7:21 am    Post subject: Reply with quote
Yes. It seems the CA is not present or not visible. Look forward for your UV photos. Wink


PostPosted: Tue Jul 07, 2015 7:58 am    Post subject: Reply with quote
Thanks Calvin, Yes, there will be UV images of course Wink

Here a test of a metallic precision ruler shot against the light, the worst situation. The color artifacts are grating effects of the metallic surface.



Looks very good to me.... Wink


PostPosted: Tue Jul 07, 2015 8:56 am    Post subject: Reply with quote
Interesting lens. It appears to be apochromatically connected for visible light. Probably mean it is also apo for UV light.


PostPosted: Tue Jul 07, 2015 9:29 am    Post subject: Reply with quote
iangreenhalgh1 wrote:
Interesting lens. It appears to be apochromatically connected for visible light. Probably mean it is also apo for UV light.


It is apochromatically corrected from UV to (near) IR. Has a flat transmission too


Data is here: http://www.macrolenses.de/ml_detail_sl.php?ObjektiveNr=298


PostPosted: Tue Jul 07, 2015 9:46 am    Post subject: Reply with quote
More images using this lens are here: http://forum.mflenses.com/viewtopic,p,1442896.html#1442896


PostPosted: Tue Jul 07, 2015 11:35 pm    Post subject: Reply with quote
It's on my wish list for a while. A long while.
Hellishly expensive.
No CA on my IPS panel.


PostPosted: Wed Jul 08, 2015 6:14 am    Post subject: Reply with quote
Himself wrote:
It's on my wish list for a while. A long while.
Hellishly expensive.
No CA on my IPS panel.


Yep, waited a very long time for that one, too! Has gotten rather rare
and a collector's item...


PostPosted: Wed Jul 08, 2015 10:39 pm    Post subject: Reply with quote
I see no CA, looks good to me.
I would love to see more pictures from it since I know I'll never own it, but have been very curious about the Micro Nikkor line.
You may want to update the thread title to include the lens info.
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