NikonGear'23

Gear Talk => What the Nerds Do => Topic started by: golunvolo on May 21, 2017, 22:24:48

Title: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 21, 2017, 22:24:48
I´ve got it yesterday for 80€, shipping included. It maybe simple for the people here but it is my first ever modification of this kind. I couldn´t use it as I own a d700 and d750 so modification was needed. It has also some oil in the iris but that will have to wait a little. I went through the excellent post by Richard explaining how to tear it down and, even I started with hesitation and looking for someone to do it, I´m pretty sure I´ll do it myself.
   As of today, It is AI modified and it works without problem from f/2.5 to f/11. I tried M and A without problems.
   I have to get use to manual focus! With tripod and lv the results are even better than I expected. Handheld is getting easier fast too.

   1: the tool
   2: with tripod and lv @ f/5.6
   3: from same position shooting through the blinds also @ f/5.6
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 21, 2017, 22:28:57
Auto metering. The window in the background is about 10 mts away.
1. f/2.5
2. f/4
3. f/5.6
4. f/8
5. f/11

   Only the aperture ring was used. Camara in A mode.
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 21, 2017, 22:33:18
Handheld manual focus @f/2.5 and f/5.6

  That´s it. I have no pictures "of the lens", only "with the lens"  :P :o ::) Will post one to show how the mod looks. It is very straight forward, just had to be careful and go slowly.
       
   How difficult will be to add a CPU?
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: Bjørn Rørslett on May 21, 2017, 23:25:37
Congratulations with your "new" lens. Any 105/2.5 is a fine addition to a Nikkor line-up.

"How difficult will be to add a CPU?" not very, if the parts are available :D
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 21, 2017, 23:56:41
Bjørn, I actually have this one and one pristine copy of the "Gauss " type.
  Are the parts available?   ::)
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: Bjørn Rørslett on May 22, 2017, 00:17:01
I'm at the bottom of my inventory but will have a look tomorrow.
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 22, 2017, 00:50:22
Thank you
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: richardHaw on May 22, 2017, 03:39:30
congratulations!  :o :o :o
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: Bent Hjarbo on May 29, 2017, 10:40:16
Hi. Is it the Sonnar design with the "screw-on" aperture ring?
I got one of these, and is considering the Ai change as it make it easier to use even on a Df.
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: MFloyd on May 29, 2017, 12:56:21
Excellent lens ! I had mine redone by the Bjørn/Erik dream team  :)

(https://farm8.staticflickr.com/7440/28259329105_f2ac64d506_k.jpg)
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: armando_m on May 29, 2017, 15:23:21
Paco,

It is a user friendly lens, specially after my first experience with a MF lens on the D800 was with the 55 f1.2,  and the results are very satisfying, felicidades !

The guides from Richard are an invaluable resource
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 30, 2017, 00:59:14
Hi. Is it the Sonnar design with the "screw-on" aperture ring?
I got one of these, and is considering the Ai change as it make it easier to use even on a Df.
   It is. The Ai change is very easy. It is my first. I needed a dremel and patience.
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 30, 2017, 01:04:03
Paco,

It is a user friendly lens, specially after my first experience with a MF lens on the D800 was with the 55 f1.2,  and the results are very satisfying, felicidades !

The guides from Richard are an invaluable resource

   Gracias Armando.

   Richard guides are excellent. I received the lens with some oil in the iris and a somehow stiff helicoids. Just following his blog I have done a complete tear down of the lens today.  Aperture is snappy now and everything is working as it is suppose to do. My first! I´m so happy.
   Here also a snap with the lens just to try.

   Thank you all
     
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 30, 2017, 22:07:38
I took it today out for a spin. So this should be me...
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 30, 2017, 22:10:23
Today is a local holidays, no work for me. I have the whole day for myself. Walking around with no time schedule or direction  8)
1-Post-free
2-All the details
3-With extension
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 30, 2017, 22:13:47
4-difficult exposure
5-in the action
6-no name
7-more water
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 30, 2017, 22:18:27
8-bicycles are for the summer
9-favorite subject
10- panorama.

  It has been a long day. I´m afraid I should confess that I have many more "in focus" images today because I have made a genius discover: there is a dot in the viewfinder that tells you when you hit focus with whatever point you decide  :-[ ::) about time...
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: armando_m on May 30, 2017, 22:27:55
Paco :) congrats on discovering the focus confirmation dot! Some models have arrows on the sides that indicate which way to turn the focus ring , that is if you have a nikon lens, sigma's turn the other way around

the confirmation dot works well with the 105 f2.5 , but the tolerance with other lenses - 55 f1.2 - is to wide and the results are not reliable

I really like the b&w bench image

One thing I really like is how compact the lens is, at least when compared with the modern AFS lenses
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on May 30, 2017, 23:02:39
Paco :) congrats on discovering the focus confirmation dot!
Oh, don´t mention it -seriously, don´t, is embarrassing  ;D ;D ;D-

   It does work very well with this lens. I also tried a 20mm 2.8 with good results. As of today, I´m waiting for a k3 screen for the d700. I think it will be a lot of help. Shooting manual lenses is yet another discovery. It changes the experience a lot.
  I´m happy you like the bench.

   Walking around with the d700 without the grip and heavy battery and this lens was easy and I like the results. I´m pretty sure I´ll keep doing it
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: John Geerts on May 30, 2017, 23:16:58
Nice series, Paco. I like the wheels especially.   The combination of a good viewfinder and the green dot is usually a guarantee for hitting the focus.

If my eyes are tired (or it is pretty dark), I usually need the extra info of the 'green' dot to be sure the focus is 'on'.   ;)
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: Erik Lund on May 31, 2017, 08:50:47
Very nice series! The lens is a true Classic!
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: Matthew Currie on May 31, 2017, 16:30:05
For reasons not readily explained, I have always found the 105 relatively easy to manually focus even on the terrible D3200 screen, compared to others.  The 85/2.8micro and old 85/1.8 are both difficult, and the 50/2 nearly impossible, the 135/2.8Q poor, but the 200/4Q pretty good.  The 28/3.5 is not too bad, the 35/2.8 poor, but the 35/2.8PC very good.   Maybe it has to do with the way the lens renders edges or something, or maybe it's all psychological.  It's hard to tell whether the best image makers focus the best, or the best focusing ones make the best images.   Anyway, the 105/2.5 is grand, and it's clear from the pictures above that the example here is working nicely.
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: Akira on June 01, 2017, 00:56:31
Paco, your photography style came through your new toy already much successfully.  I'm truly enjoying the series. Congrats!
Title: Re: Auto-Nikkor-P 105mm f/2.5 pre-AI to AI
Post by: golunvolo on June 01, 2017, 06:37:24
Thank you John, Erik, Matthew and Akira.

  Until the discovery of the dot (  ::) it is a nice feature, you should all try it  :P :-[ :o ) I had a strong tendency for back-focus. Lack of experience , no doubt. I hope the use of the k3 screen will help with the successful rate Any point or advice on proper technique for manual is much appreciated.
  I'll keep on shooting