|On to the 150mm telephoto
lens. It was suffering from falling damage and of course dampness
|The Japanese Kowa Six medium format SLR
was a mid-range system camera with all the capabilities of its
competitors short of having interchangeable film-backs. There was
a wide range of decent lenses all the way out to a 19mm fish-eye!!
Shown here is the 150mm lens. Corrosion, dropping damage and
fungus were the standard problems.
Masses of info on this camera is available on Robert
Monaghan's medium format pages
here. - This page seems to have vanished - I hope it's not gone
for good. If anyone knows where it is, please let me know. In the
is another page with some info on this model.
|A huge cemented triplet
forms the second group in this telephoto lens.
The glass was pretty well covered with fungus, but the cementing and
blacking were still ok.
|On the right
here we can see some nasty damage to the rear plate that coveres the
shutter tensioning mechanism.
In order to tighten the three fastening screws, I had a fair bit of
panel beating to do.
identical to the 55mm lens.
Alternating brass and aluminium barrels and rings make my work easier
than it sometimes is.
The series of pix inset on the right show the inside of the barrel that
holds the second group. Here it is having a large amount of
corrosion/fungus cleaned off.
to return to the 55mm lens
|To the left is
the complete front component reassembled and cleaned.
Below that, we must never forget to reinstall spacers and shims removed
Bottom left is the typically grubby lens barrel and finally, we have the
finished item. Well-used, but clean and ready for a few years