NikonGear'23
Gear Talk => Lens Talk => Topic started by: Michael Erlewine on March 16, 2016, 19:16:44
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It there is any group I am aware of that likes lenses as much as the crew here, it has to be the coin collectors. One of the more detailed sites is:
http://coinimaging.com/
On this site are many of the more exotic macro lenses, with test results and comments. They have one feature called the “Lens Testing Hall of Fame” which is very interesting.
http://coinimaging.com/hall_of_fame.html?
If you select a magnification of 0.5, which would be what I like for close-up work, you see 23 famous lenses rated by Sharpness, Resolution, Corner Sharpness, and Overall Rating.
Notice that the Nikon Printing Nikkor 150mm f/2.8 is the top ranked list on three of those four lists.
I have that lens, which they feel is the sharpest, the best resolution, and is the overall top-rated lens.
Here is a photo taken with the Nikon D810 on the Nikon PB-4 Bellows, with Zerene Stacker, to see what kind of image that lens produces.
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Yes, indeed a fantastic site and their top contributor I know since very long.
DOes a fatastic job in testing out lenses scientifically. Not artsy, very technical
oriented though.
Highly recommendet!
Great shot Michael, you have most of their top rated lenses btw. Honestly regret
of having sold my 150mm Printing Nikkor a while ago ;-)
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i used to visit that site a lot. not much lately because bugs are not in season :o :o :o
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No mention of Voigtlander, Zeiss and probably a few more?
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Interesting to know that Ais Micro 55/2.8 and Nikkor-O 55/1.2 are regarded very highly at 0.5x magnification. I've found that Nikkor-O yields fairly sharp images when used with the M2 ring which are roughly 0.5x of the subject. The "hall of fame" ranking kind of support my findings.
Thanks for sharing, Michael!
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You are in such a high class environment that it is hard to see for Earthlings like me the difference in "technical quality".
The only things I see is the amount of effort you put into it with great success and the drawing characteristics of some signature glass.
Your result is stunning as usual!
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That shot certainly is nice.
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The not exotic at all 105 VR does pretty well on that chart. I wonder what its result would look like side by side with the incredible one above.
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Very interesting and illustrated with an exceptionally beautiful photo.
Is there a list of all the lenses tested? I have the 55mm f2.8 AI-S and the 105mm f4 AI-S which are both on the list, but I am almost convinced my Sigma 180mm is sharper than either of those, yet is not on the list at all?
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According to the list under "New Lens Tests" section of the website, the front 52mm thread of Nikkor-O 55/1.2 is "non-standard". This is strange, because I can use normal 52mm protection filters or BR-2A reverse mount adapter without problem. My sample is one of the older Nippon Kogaku version without the red "M=1/5" mark. I wonder if the newer version has a 52mm thread of proprietary pitch?
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My guess would be that the 'non-standard' remark is for the m39 mount for the Nikkor-O 55/1.2
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The not exotic at all 105 VR does pretty well on that chart. I wonder what its result would look like side by side with the incredible one above.
maybe this is just on my sample but i did find my older 105mm f/2.8D to be a bit sharper :o :o :o
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My guess would be that the 'non-standard' remark is for the m39 mount for the Nikkor-O 55/1.2
Erik, the auther clearly states that the 52mm thread is non-standard. You can go to:
http://coinimaging.com/lens_tests_new.html
and select "Repro/duprication lens", Nikon 55/1.2 Nikkor-O M=1/5 and then Page 1 to see the description.
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The relevant statement is found to be as follows;
Filter Threads: 52 mm, non-standard lens thread.
Thus the "non-standard" reference is to the M39 mounting threads, NOT the filter threads (which as already commented upon, are bog standard 52 mm).
This information is duplicated a little further down on the same page, under Lens Mount.
Confusing approach of presenting the lens data, admittedly.
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Oh, I missed the description of non-standarrd "lens" thread! Sorry for the confusion!
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So what does this mean?
To reverse this lens, you need a 52mm reversing ring. The problem is that the 52mm lens threads are not of a standard thread pitch
I'm not familiar with reversing lenses, but does it not refer to the filter threads?
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Sorry, my Nikkor-O takes any 52 mm thread parts I have tried so far. That includes the use of reversal rings. Thus nothing unusual about its front threads ...
I did notice a comment about a different pitch, but either my lens hasn't got this, or it does not create a problem. Thus why bother?
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In an nutshell, none of us understand what this author is talking about. :o :o :o
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Looking at these coin-collectors charts coming from a group of photographers I don't know that well was a way for me to verify what I already knew from experience, such as that the CRT-Nikkor was very, very sharp. I love that sharpness, but I also love the speed of that lens and the curvature that is there. In that sense it is a flawed lens, but a "perfectly" flawed lens for my work. For example, except for a certain kind of work, I don't care that much if the corners are sharp. I like when the sharpness rolls off in the corners.
I have flat lenses with sharp corners for doing copy-like work and have done a ton of it, like taking 33,000 shots of rock n' roll concert posters on a vacuum table that I built using the Micro-Nikkor 60mm lenses.. Anyway, looking at those lists was a treat, a confirmation of my own ability to see these differences.
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Michael, I was just referring to the mysterious "non-standard 52mm front thread" of Nokkor-O.
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I know. I was talking about the charts and the CRT-Nikkor independently of your remark. As for the thread, often the pitch of the thread is what they a talking about.
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A Series 7 filter is 50.8mm 54.346mm 36 threads per inch so should/could not be mistaken for a 52mm filter thread, only know exception is 30.5mm filter that come in two but, all other normal mm lenses and filters come in specific pitch; either 0.5 mm, 0.75 mm or 1.0 mm depending on size,,,