I took a look back at the old literature I had for zoom lenses. << Honeywell Pentax Price Information May 1967 >> Spotmatic, Black with Super Takumar 50mm f/1.4 US$299.50 ...18mm f/11 Manual US$149.50 ...50mm f/1.4 Super US$121.00 70-150mm f/4.5 Super Zoom US$395.00 (only zoom on list) ...1000mm f/8 Manual US$1195.00 (most expensive on my list!)
<<Honeywell Pentax SMC Takumar lenses (8/73??) >> ...17mm SMC Takumar f/4.0 US$319.50 ...50mm SMC Takumar f/1.4 (not priced) ...85mm SMC Takumar f/1.8 US$259.50 85-210 SMC Zoom Takumar f/4.5 US$519.50 (only SMC zoom listed) ...1000mm SMC Takumar f/9.0 Manual US$1,495.50 ...85mm Ultra-Achromatic Takumar f/4.5 US$1,400.00 ...300mm Ultra-Acromatic Takumar f/5.6 US$1,600.00 <<Asahi Pentax KM Introductory Brochure (K series intro) >> Zooms in the new "K-bayonette" line at introduction... SMC Pentax 45-125 f/4 SMC Pentax 85-210 f/4.5 SMC Pentax 135-600 f/6.7 in addition there were 23 other fixed focal length lenses from 17mm f/4 fish-eye to 1000mm f/8 super telephoto. Until the introduction of the "K-bayonette" lens line, zooms were pretty rare and expensive. For whatever reasons, I tend to overlook the later zooms as not part of the M lens line. Only the 40-80mm and 75-150mm had the common 49mm front filter size. For example, the M35-70mm is way to big to be called an M lens and comes with a 58mm front filter size. The AF35-70 f/2.8 is a giant! I've never really thought of them as M philosophy lenses. Regards, Bob S.