- Produced Riken Optical Corp., Japan
- Mount M42 (universal/Pentax screw mount)
- Focal length 55mm
- Aperture range f1.4-16
- Focal range .5m to infinity
- Filter thread 55mm
- Elements 6 in 4 groups
- Aperture blades 6
- Weight 10.8oz (306.2g)
- Auto-Manual switch
One of the sharpest lenses that I have, it’s BIG GLASS you know, heavier than it looks but a beautiful image producer. Sadly, prone to flare if you don’t use a hood. (Of course that’s what you get with BIG GLASS)
I wouldn’t have noticed, maybe, but I did a portrait session where I got a little ahead of the strobes, and that series has a soft spot in the very center of each image from the flare. I use a hood now, even indoors with portrait sessions, at least with my short focal length lenses. Painful lesson!
I have another that’s labeled Auto Sears 1.4 that came with my trusty Sears TLS. Same lens, different name. Both very nice. Heavy metal construction, this was the early Takumar era, they’re similar in build to those metal-housed lenses.
I don’t know that Ricoh actually made their own lenses, but I’ve been impressed with every Ricoh-branded lens I’ve ever used. They were likely outsourced (like many others) to OEMs like Cosina.