Yashinon 3,2cm/1,7

The Yashica half17 was a nice little camera, and deliver good results (samples with Fuji superia200 HERE ). unfortunately it was fallen, blades and shutter mechanism went error. So I decided to dissamble the lens then put it in use with NEX.
Yashinon 3,2cm/1,7 is an old lens, as long as not against strong light, it can deliver nice color/contrast. But even in strong backlight situation detail can be captured well, despite of poor contrast.
Is it sharp? Yes..fom wide open.

crop from above

YASHICA HALF17 & Fuji Superia 200

Yashica half17 is a half frame film camera with fixed 32/1,7 Yashinon lens 

blades sometimes doesn't close correctly, which affect for wasting some frames. specially on 1,7 and bulb mode.

Selenium/light meter isn't working well, so I set in my mind the speed about 1/45-1/60, then light meter with Android based Beecam light meter on my old Hisense smartphone.

Fuji film I used was expired in 2013, process by lab, and I shot the film again using Sony NEX (sensor is dirty, it affect the results, looks like scratches, I leave it that way :D) and Kiron 105/2,8 lens, simple edit with Irfanview

PO-108-1A 50/1,2

The lens was designed for Russian 16mm projector

lens only

Sharp at center, at same class with big brand which made 50ish/1,2.
yet, sharp at center only, like common 16mm lens projector.
Color and contrast is good. No wonder I can see clearly it's coating, small CA appear (you can see when zoom to 100%)
However there's bluish flare against strong light

Lens+39-42 ring+stepdown 52-42+52-42 helicoid+42-nex adapter

Konica Konishiriku Hexanon 50/1,8

Konica Konishiriku  has Konica F mount, which is shorter flange register than Konica AR mount.
I dont have the adapter yet, so I use helicoid adapter _ ring+glue gun like this

The results almost identical with Petri 50/1,7 mc

petri

konishiriku