SMC Pentax-M 50mm f/1.7 lens

During my last trip to Japan I brought my trusty Pentax 645NII medium format camera but also my Pentax MZ-S SLR camera with just one lens and in a pouch so that I could easily carry the camera around in my coat pocket and have always something available even when bringing along the rucksack with the Pentax 645NII was too tiring. I had only brought Kodak TRI-X on 35mm and had started to shoot it at EI 800 to give me possibilities at night and for street photography.

SMC Pentax-M 50mm f/1.7 lens
SMC Pentax-M 50mm f/1.7

As I said, I had only brought one lens for this camera and in that case I prefer to take a 50mm prime lens. I have a pretty good Sigma 50mm f/2.8 autofocus lens but this time I decided to take the SMC Pentax-M 50mm f/1.7 lens that I had bought together with my Pentax ME camera back in the 1970s. The SMC Pentax-M 50mm f/1.7 was really an amazing lens at the time and it still is awesome with great sharpness and contrast, and performing still acceptably well at f/1.7. See Ken Rockwell’s site for a review of this lens. The great thing with Pentax cameras is that even a modern SLR as the Pentax MZ-S will work perfectly fine with any old lens with a Pentax bayonet mount, no matter how ancient.

At first I was a bit afraid that a manual focus lens was going to be troublesome or too slow, but it was very easy to use and the focus indicator of the camera was a great guide to know when the focus was correct. I’m not really quickly sneaking photos of people, I prefer to engage them and then take their photo so it was not an issue at all. All in all, I think I made the right choice, the f/1.7 aperture was very welcome and the resulting shallow depth of field was really helpful making these photos work.

S-M-C Takumar 6X7 105mm f/2.4 lens

Foma Fomapan 400 at EI 400, developed in HC-110 dilution E for 10:30 minutes, agitation: 2 inversions every 30 seconds Foma Fomapan 400 at EI 400, developed in HC-110 dilution E for 10:30 minutes, agitation: 2 inversions every 30 seconds

The S-M-C Takumar 6X7 105mm f/2.4 lens in its three different yet optically identical incarnations is probably the most recommended lens for both the Pentax 6×7 and the Pentax 645 series of medium format cameras. I never really understood this, the SMC Pentax 67 90mm f/2.8 lens that I already owned is on paper not that different if you only consider the aperture and focal length.  Yet the 105mm at open aperture has an amazing and quite a unique bokeh which makes it great for portrait photography out in the field.

I’ve only tried out the lens on my Pentax 67II so far and I’m keen to use this lens on my Pentax 645NII via the affordable Fotodiox adapter I picked up earlier. I love all my other Takumar lenses, if it works out as well on my Pentax 645NII, this lens will be a keeper!

In my bag Pentax 645NII


Pentax 645NII
– Pentax 645 FA 45mm f/2.8 (on camera)
– Pentax 645 FA 75mm F/2.8
– Pentax 645 A 150mm f/3.5
– Pentax 645 A 200mm f/4
– Pentax Rear Converter-A 645 2X (not shown)
– Fotodiox Pro PT67-PT645 adapter (Pentax 67 to Pentax 645)
– Pentax 645 extension tubes
– Extra 120 film insert
– AF-360FGZ flash
– F&V K480 video light
– Lowepro Mini Trekker bag that I have had for years