Originally posted by Dangermouse I've always been puzzled why Pentax dropped the KM and brought the K1000 in. The KM had some features that would have gone well on a student camera (which the K1000 often seems to be sold as) - the depth of field preview for example. The only Pentax film body I own with that is a P30T!
The K1000 was introduced as a budget line extension for the K bodies (along with the K2DMD as a top-end pro extension). At first it sold very poorly.
Olympus had shocked the camera world with their small, OM cameras. Pentax was a bit late to the game whe they discontinued the K bodies and replaced them with the smaller M series, in reaction to Olympus.
In order to keep cash flowing, the K1000 (basically a Spotmatic with a K-mount) was marketed at a give-away price point. Once it was adopted by schools as a teaching camera a cult following developed, and many hold it close to the heart as their first SLR. The rest is a remarkable history - the longest camera production run ever.
Pentax's decline really started in the early 70's, when they remained committed to the M42 mount. Had they introduced the K-mount on the Spotmatic II or ES in 1971, or even the Spotmatic F or ESII in 1973 they would not have lost so much market share.
Pentax has been struggling to catch up ever since.
As a side-bar, my daughter was Editor-in-Chief of her nationally-competitive HS Yearbook when our school district took some Federal revenue sharing money and outfitted the Journalism classrooms with Apple workstations. Once the hardware was there, it was a small step to replacing 40 K1000's with Canon digital cameras. The savings on photographic consumables alone replaces the computers every fourth year and the camera bodies every fourth year, on alternating two-year cycles. Had Pentax had a digital equivalent to the Canon, Mary would have spec'd it, but Canon and Nikon were the only viable options.