CHINON 50mm f/1.7 Pentax-K mount on the NEX-5

[Jesito]

Cheap lens with very good performance, similar to the one of the Pentax-M 50mm 1.7

To mount it I had to use two adapters piggybacked: NEX-4/3 and on top 4/3-Pentax K:





Some samples:

Focus on the ventilation slots on the lamp:



Focus on the petal's edge:



Focus on the figurine's head:



Quite sharp, notice the fabric texture:



Focus on the leftside flower, soft bokeh:



Focus on the water drops, on the flower:



Sharp @F4:





Regards.
Jes.

[Attila]

Last sample especially nice, NEX has damn fine sensor , make almost any lens too good seriously I know this is a good lens.

[koji]

I tend to agree with Attila, the last one is nice.
The lens seems to be very sharp too.

I wonder who made this lens. Chinon did not have a lens factory,
that was a common knowledge in japan. (thou I have no confirmation)

[Jesito]

Might be Cosina?.
Chinons trend to be fine lenses, I haven't found any really bad...
Thanks for your comments, Attila & Koji.

Regards.
Jes.

[Attila]

Tomioka made numerous lenses under Chinon brand , perhaps when Tomioka was gone , Cosina made for them too. I guess Chinon bought their lenses from actual third-party lens makers like Tomioka, Tokina, Cosina etc.