Nikkor 10.5cm PC f2.5 lens - reputation?

I have two F-Mount Sonnar formula 105/2.5, and two Gauss formula lenses: a Nikkor-PC 105/2.5 and AI Series 105/2.5. And an S-Mount 10.5cm f2.5 and an LTM 10.5cm F2.5.

It is very hard to tell them apart image-wise, they are all good.
 
The slr versions are world class lenses. I have 3.

I believe the RF to be the original Sonnar design which will be a little soft wide open & up close. That was the trade off to a Gauss design which has more elements and is symetrical thus being good close and far but with diminished contrast.

I have never heard a complaint about any of them. I am nitpicking some. But I do see the difference in my SLR ones, 1 Sonnar original and two Gauss.
 
Oh yeah. I got an F-Mount adapter for my M8. I guess a direct comparison between the LTM version and AI version would be pretty easy. And an S-Mount adapter. But the optics on the S-Mount and LTM are identical. And on the 10.5cm F2.5 F-Mount
 
that will be interesting

that will be interesting

I only have the P*C AI version, I specifically went for this one because of it's "multicoating" I do have the original 2 pin hood, but that hood is almost as big as the lens.

I've not seen bad images or bokeh from earlier AI lenses or ltm 105/2.5s, so perhaps the Nikon engineers were more boke critical than we are??!! :angel:

Brian Sweeney said:
Oh yeah. I got an F-Mount adapter for my M8. I guess a direct comparison between the LTM version and AI version would be pretty easy. And an S-Mount adapter. But the optics on the S-Mount and LTM are identical. And on the 10.5cm F2.5 F-Mount
Click to expand...
 
This picture:

sharbat_gula.jpg


Was taken with the SLR version.
 
Here's a few taken with the S-mount RF version of this lens. I ended up selling my 10.5cm/2.5 though, as it was little to large and heavy on an RF for my liking. But I still have an Ai-S 105mm/2.5 for my SLRs 🙂


Shinjuku by jonmanjiro, on Flickr


Golden Gai ゴールデン街, Shinjuku 新宿 - Nikkor-P 10.5cm 1:2.5 by jonmanjiro, on Flickr


Golden Gai ゴールデン街, Shinjuku 新宿 - Nikkor-P 10.5cm 1:2.5 by jonmanjiro, on Flickr


Life is a bitch, Golden Gai, Shinjuku 新宿 ゴールデン街 - Nikkor-P 10.5cm 1:2.5 by jonmanjiro, on Flickr
 
I have both, the 105/2.5 Ais (newer) version and recently also bought the Nikkor-P-C 10.5cm 1:2.5 lens. Heavy but very usable with the SP`s 1:1 VF.

5017130320_46f9729873_z.jpg
 
Gabor, when you mount the 10.5cm on your SP, is there a tiny bit of "loose-ness" at the mount due to its weight? I had the chance to try one but it felt so so I passed it up.
 
Vincent, my copy of the lens mounts firmly on my SP and also an S2 (and the Amedeo adapter too from memory). No wobble at all.
 
maddoc said:
Vincent, my copy of the lens mounts firmly on my SP and also an S2 (and the Amedeo adapter too from memory). No wobble at all.
Click to expand...

Gabor, thanks! The seller was letting it go at about USD300. I felt uncomfortable with the slight wobble and decided not to buy it.
 
The wobble isn't uncommon and is easy to fix by adjusting the three 120° flanges of the lens mount. This is a five minutes DIY job.

Or - it may be the camera body lens mount that has some play. In that case securing the three screws that link the helicoid to the camera casting takes five minutes too, after having removed the front plate.
 
Highway61, the tiny wobble is not constantly there. It randomly appears depending on the change in direction I hold the camera body. I tried the 85f2 as well but no wobble. I think it could be the lens mount.

What can I do to fix it? You made it sound simple! And I would love to hear from you how to do it. If it is within my ability, I may give it a shot provided the seller still have the lens.
 
At the rear of the lens and inside the lens mount you will see three 120° female flanges - and their job is to clip onto the matching male flanges of the camera body external lens mount.

These flanges are adjustable thanks to a thin space they have in them. It can be done by carefully introducing the pin of a precision screwdriver into that space and having the flanges curve slightly moved towards the center of the lens mount, so that the lens mount grabs the camera mount very firmly when you mount the lens on the SP.

If the wobble appears in a certain position of the camera only, chances are that only one flange is a bit loose by a tiny fraction of mm.
 
Brian Sweeney said:
Okay- the 10.5cm F2.5 is probably the sharpest of the Nikon S-Mount telephoto lenses...

The Framelines of the M8 for 90mm lines are perfect for the 105. The inner border of the 90mm framelines on the M3 work for the 105 as well. An adapter to use the S-Mount lens on an M-Mount camera will run $250~$300, and the same lens in Leica Mount is much easier to use with the M-Mount camera.
Click to expand...

Let me revisit this topic briefly... When using an Amedeo S-to-M adapter, will the correct framelines show up on M-bodies for S-mounted 35, 50 Nikkor lenses?

Likewise, what framelines will I get for 8.5 and 10.5 Nikkor lenses?

Many thanks again...
 
The Amedeo S-Mount to M-Mount adapters will bring up only one set of framelines. You would have to contact him for an adapter to bring up the 90mm frame. On an M8, the 75mm framelines are perfect for the Nikkor 85. They come up with the 50mm framelines, that is the default for an Amedeo adapter. There are a few S-Mount to LTM adapters, and you can use them with LTM to M-Mount adapters to bring up different frames. There might be a way to make a switch for various framelines- someone like Amedeo could probably come up with something.
 
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