What a nice design!

Well captured and quick thinking. The Pentax 75-150mm
is one of the few lenses that's sharper at the 150mm end
than the 75mm

Looks a decent lens.... even the corners are sharp.

It's hard to tell with the CZ 135mm's some of the older
Zebra lenses etc. sometimes have much better bokeh, so as long as
the aperture ring M/A switch work and it's got reasonably
clean optics I'd buy it. They are sometimes a bit stiff to
focus and sometimes work free'er with use. It's not a big
job to strip them down and re-grease.

Here's a bokeh test with the MC and it's come out of it quite
well link

There are a few genuine 49mm reverse adapters on ebay.
The engineering on these is really superb and an exact
fit on the camera body. You would also need a 49 -> 52mm
step up ring (or is it step down? )

link

-

You can also store them in a freezer. Should keep
quite a long time frozen if not indefinitely.

Hull F.C. = "Hull Football Club" = a Rugby League Club

The soccer club is:
Hull City A.F.C. "Hull City Association Football Club"

Remember that song with the line "Somebody's watching me!"

http://www.wirralcam.org/home.shtml

Tomioka is actually part of Kyocera and still going today:

http://www.kop.co.jp/english/company/index.html

quote:

Kyocera Optec, originally founded in 1949 as Tomioka Optical and Mechanical Manufacturing Co., Ltd in Ome City, Tokyo, has constantly developed leading-edge lens manufacturing technologies since its early days. In 1974, the Company started manufacturing Carl Zeiss Lenses for Contax cameras through technical support from the Carl Zeiss Foundation in Germany; which were regarded as being among the world's highest quality lenses. Since joining the Kyocera Group in 1983, the Company has diversified its product focus and brought new standards of excellence to a wide range of optical equipment manufacturing fields.

1974 was prior to the K Bayonet and why I don't think they made
any K mount lenses, they would have been busy with CZ and Yashica
stuff, even though ebay sellers claim otherwise

135mm being quite popular was produced by a lot of 3rd party
Japanese manufacturers so basically the Ricoh could have been
made by anybody. All Ricoh zooms seemed poor so I don't think
they used a top lens maker all the time. The 200mm f/4 was
made by Pentax as were some 50mm f/1.7's.

The 50's were all quite good.

I'd go with the Zeiss. It's a Sonnar design so it has the unique
Sonnar look and being CZ it's a good investment. A lot of
Canon users like them and I don't think they were ever sold in
the US new.

Who made the Ricoh is unknown some of their screw lenses were
Tomioka, but some bayonets were Pentax, although at f/2.8 I wouldn't
think that one would be Pentax.

A good alternative would be a Russian Jupiter 37A
which is similar to the CZ but a lot cheaper and
slightly better IMHO, although they can vary.

I've never seen a red one close up.... very well captured
Time to dust off my Sigma 150-500mm