Auto Yashinon-DX 1.7/50

memetph · Joined: 01 Dec 2013 Posts: 940 Location: Poland

Tonight I tried again my DS-M and it seems to be very similar to the DX except the yellowish tint that you can remove in PP.

My sample needs some internal cleaning and relub. Does anybody has some experience with those lenses ? I did not find anything on YouTube.
How can I dismantle it ?

Oldhand · Posted: Mon May 04, 2015 9:55 pm Post subject:

memetph · Joined: 01 Dec 2013 Posts: 940 Location: Poland

it is done, thank you.

WNG555 · Joined: 18 Dec 2014 Posts: 784 Location: Arrid-Zone-A, USA

The DS/DS-M body is a different animal from the older DX body.
Downsized and not as robust.
To begin to take it apart, I have a DS f/2 and /1.7, which are identical physically....you extend the focus barrel, and grasp it and unscrew it counter clockwise. The front portion and name plate will spin off revealing the innards and front element attachments.

That's the extent of my experience with them. Good luck and post your findings here!

BTW,
The DS/DS-M 50mm f/1.7 lenses ARE radioactive. Only the 1.7 model, not the 1.9 or 2.0.
Perhaps that is why your lens has a yellow tint. A result of the glass being irradiated over time.
This is reversible by UV exposure.

And yes, my $0.02 regarding the DS/DS-M.... they are excellent performing lenses. DS is single-coated and same as older DX coating.
DS-M multi-coating was carried forward into the ML line. So, those are the same optically. They are different generations, but the last one is the 'best' due to inevitable refinement.
The DSB line is a dog, and deserves to be kicked.