Luminous Landscape Forum

Equipment & Techniques => Medium Format / Film / Digital Backs – and Large Sensor Photography => Topic started by: mdelrossi on January 10, 2019, 10:18:17 am

Title: Mamiya 105-210 doesn't focus to infinity on GFX
Post by: mdelrossi on January 10, 2019, 10:18:17 am

Picked up a Mamiya 105-210 ULD and a Fotodiox adapter. the problem is that it doesn't focus to infinity until i get to 140mm or so.
Is it the adapter?or do I have to send it in?

Any suggestions would be great.

thanks
mdr

Title: Re: Mamiya 105-210 doesn't focus to infinity on GFX
Post by: trias260 on January 11, 2019, 11:44:16 pm

similar problem here. I tried to attach a mamiya 35mm, 55mm and 150mm,
they all do not focus to infinity.
The adapter I used is a novoflex. I complained and they already sent a new one, but same result.
Now I ordered a Kipon adapter, but am afraid that it will not work either.

any ideas out there?

Title: Re: Mamiya 105-210 doesn't focus to infinity on GFX
Post by: E.J. Peiker on January 11, 2019, 11:57:41 pm

This post prompted me to check my Mamiya-Sekor 45mm f/2.8 N with the Fotodiox Pro adapter on the GFX-50S and it does focus to infinity, actually slightly past infinity.

Title: Re: Mamiya 105-210 doesn't focus to infinity on GFX
Post by: Gerd_Peters on January 12, 2019, 06:39:08 am

That must be different problems. Mamiya 24 FE, 35, 50 Shift, 80, 200 APO etc ... reach with the Fotodiox Pro Adapter M645-GFX all perfectly infinite on the GFX.

If the Mamiya 105-210 does it only at the 140mm, I'll tap on another problem.

However, I noticed a very fluctuating quality in my Fotodiox adapters. Maybe that's one reason.

The best mechanical adapters with the lowest tolerances had Kipon until now.

Greeting Gerd

addendum:

My Mamiya lenses are all about infinity. That's right, because the material of the lenses expands at different temperatures.

In this respect, that must already be a very strong deviation on the adapter.

Title: Re: Mamiya 105-210 doesn't focus to infinity on GFX
Post by: trias260 on January 12, 2019, 08:31:44 pm

thank you Gerd,
I wait now for the ordered Kipon adapter, I will report then

greetings
Ekkehart

Title: Re: Mamiya 105-210 doesn't focus to infinity on GFX
Post by: mdelrossi on January 14, 2019, 02:22:14 pm

Well at least I'm in good company :-\

Was looking to use this as a long lens for landscape and architecture. Good thing I have the 110.