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.
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.