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Nikkor-P 105mm f/2.5
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PostPosted: Wed Dec 24, 2008 2:52 pm    Post subject: Nikkor-P 105mm f/2.5 Reply with quote
A Nikkor-P 105mm f/2.5 (AI'ed) arrived in the post this afternoon. Glass looks to be in excellent condition. Focus is smooth. A good buy at €51 I think ... yes, its not the P.C version so does not have full multicoating.

I have taken a couple of test shots, just to be sure it functions. But in between 3pm (brilliant sunshine) and now (3:45) its gone dark and overcast Sad

More when I know more...


PostPosted: Wed Dec 24, 2008 5:08 pm    Post subject: Reply with quote
This is my one of the fav lenses (non-PC ver)...



PostPosted: Wed Dec 24, 2008 5:11 pm    Post subject: Reply with quote
I had P.C version I think they have not much difference, I found AIS version is awesome that is significantly improved, perhaps best lens what I seen from Nikon.

Congrats for your new purchase! Surely it was a great deal.


PostPosted: Wed Dec 24, 2008 6:04 pm    Post subject: Reply with quote
Attila wrote:
I had P.C version I think they have not much difference, I found AIS version is awesome that is significantly improved, perhaps best lens what I seen from Nikon.


Thats odd, because Nikon say that after the change from Sonnar-type to Xenonar type in 1971 (change to Nkon from N.K.J, and serial numbers starting at 4) the optical design was unchanged up to the present day.



The only change from AI to AIS (apart from the aperture linearity) was a reduction in focus throw from 170° to 140°, and replacement of the screw-on hood with a built-in, sliding hood.

So I can't explain your observation. Are you sure the other one was a P.C and not an (old, pre-1971) Sonnar-type Nikkor-P?

Attila wrote:
Congrats for your new purchase! Surely it was a great deal.


Yes, I think so.


PostPosted: Wed Dec 24, 2008 6:43 pm    Post subject: Reply with quote
http://www.mflenses.com/gallery/v/japenese/nikon_nikkor/nikkor_pc_105mm_f2_5/nikor_105mm_f2_5_p_c-1.jpg.html
Yes, I had P.C version.


PostPosted: Sun Dec 28, 2008 11:37 am    Post subject: Reply with quote
I have a few early samples up on flickr now
http://www.flickr.com/photos/nantonos/tags/nikkorp105mmf25xenotar/

As I'm getting used to both a new lens and a new focusing screen, none of them are especially good. I was just messing around for practice.


PostPosted: Sun Dec 28, 2008 11:40 am    Post subject: Reply with quote
Attila wrote:
http://www.mflenses.com/gallery/v/japenese/nikon_nikkor/nikkor_pc_105mm_f2_5/nikor_105mm_f2_5_p_c-1.jpg.html
Yes, I had P.C version.


I looked in the gallery for the AIS
http://www.mflenses.com/gallery/v/japenese/nikon_nikkor/nikkor_105mm_f2_5_AIS/
but there was no photo of the lens. Do you still have it?


PostPosted: Sun Dec 28, 2008 1:57 pm    Post subject: Reply with quote
Yes, I have it. It's AIS.


PostPosted: Sun Dec 28, 2008 9:48 pm    Post subject: Reply with quote
Attila wrote:
Yes, I have it. It's AIS.


Reason I ask is that apparently, part way through the production run of AIS, the coating changed from NIC to SIC. Which might well cause it to give different results to the AI (and older AIS) lenses.


PostPosted: Sun Dec 28, 2008 10:12 pm    Post subject: Reply with quote
Yes, might be they have visible difference.


PostPosted: Mon Dec 29, 2008 7:00 am    Post subject: Reply with quote
Could I ask, what are the first three digits of the serial number? I will see if I can track down when the change was made.


PostPosted: Mon Dec 29, 2008 7:37 am    Post subject: Reply with quote
Bjorn Rorslett has plenty of information on the differences of these versions, click here http://www.naturfotograf.com/lens_short.html and scroll down for information.

Some of my shots with this lens, uploaded original size
http://www.flickr.com/photos/mureena/sets/72157604657740924/


PostPosted: Mon Dec 29, 2008 12:41 pm    Post subject: Reply with quote
Bjorn Rorslett he site my all time Nikkor resource too.


PostPosted: Tue Dec 30, 2008 9:59 am    Post subject: Reply with quote
This is a nice lens for portrait applications------wide open. The following shot has had the contrast artificially boosted for artistic effect in post production.


But it flares badly when shooting against the light.


PostPosted: Tue Dec 30, 2008 4:55 pm    Post subject: Reply with quote
I did some research on the 105 f2.5 Nikkor, Re my Tamron f2.5 105mm
Here some info that may be of use
The first 105mm f2.5Nikkor-P was introduced 1953 for the Nikon rangefinder
Nikon 105 f2.5 F mount lens was introduced in 1959 and was the same unchanged design as the rangefinder lens. The original Nikkor was a Sonnar design with 5 elements in 3 groups, for identification purposes, Nikkor 105mm f/2.5 lenses which uses Sonnar optics can be identified by the "P" designation in the front of the barrel, i.e., "Auto Nikkor-P". The "P" actually stands for "penta" or 5 lens elements. Around 72/73 type P-C was introduced with 5 elements in four groups improving on the earlier Sonnar formula. This updated design made the 105 more compact, and allowed a shorter minimum focus length of 1.0 meters giving it extra shooting flexibility. The optics were also coated from this point on. Further design changes were made to the Nikkor f2.5 105mm from the end of the seventies onwards

Ref
http://www.naturfotograf.com/lens_short.html
http://imaging.nikon.com/products/imaging/technology/nikkor/n05_e.htm


PostPosted: Tue Dec 30, 2008 9:05 pm    Post subject: Reply with quote
Rob Leslie wrote:
The original Nikkor was a Sonnar design with 5 elements in 3 groups, for identification purposes, Nikkor 105mm f/2.5 lenses which uses Sonnar optics can be identified by the "P" designation in the front of the barrel, i.e., "Auto Nikkor-P".... Around 72/73 type P-C was introduced with 5 elements in four groups improving on the earlier Sonnar formula.


(my italics) Actually, thats not quite right. The change from Sonnar-type to Xenotar-type occurred part way through the Nikkor-P series, and predated the change to Nikkor-P.C. So its correct to say that all P.C (and later) are Xenotar type, but some Nikkor-P are Xenotar and some are Sonnar.

As it says here:
http://imaging.nikon.com/products/imaging/technology/nikkor/n05_e.htm

The way to tell the two designs of Nikkor-P apart is that Xenotar-type serial numbers ran from 234011; this type was introduced sometime between 1966 and 1971.
http://photosynthesis.co.nz/nikon/serialno.html#105
http://photosynthesis.co.nz/nikon/specs.html#105


PostPosted: Tue Dec 30, 2008 10:04 pm    Post subject: Reply with quote
This is with the S-Mount 10.5cm F2.5 Sonnar lens, wide-open on my Nikon S3.

http://flickr.com/photos/oldcamerapictures/3087898948/

Tight Crop:

http://flickr.com/photos/oldcamerapictures/3087898952/in/photostream/

The newer lens may be sharper, but it's hard to tell in actual use. I lean toward the older Sonnar formula lens over the newer ones.
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