These images were made over a 2 day period
Jan. 20 and 21 of 2008 with a modified Protar VII
23 1/8" lens.

Looking at the cross section of the
Zeiss Protar VII lens you will see 4 elements
1 group cemented.  I surmised that perhaps by
removing the rearmost element you would end
up with a lens that still had much of it's character
but had lost it's corrections.

I was wrong and the config was un-useable.  But
when I looked at the ground glass through just the
2 rear glasses I found I had a roughly 8 inch f4 lens
with lovely softness and character that retained
 much of it's original definition.  I re-cemented
the doublet and mounted it in it's original barrel.

These images were made with the lens.  I found
in use that f4 was almost too diffuse.  About f6
it would start to look good.  Stopped down it
would get pretty sharp.  The bottles in my
window were the best of the example photos
so I'll lead off with them.  Click on the pics
for a slightly larger size to study.


bottles f6


bottles f9


bottles f18


Welch's Grape & Dr. Pepper f6


Maple & Pepper f6


Maple & Pepper f18


39 Ford Head-On f4


39 Ford Head-On f6


39 Ford Side f4


39 Ford Side f6


Window Water Co. Shack, Tonopah, NV.

The final picture of the Water Co. Shack
is telling. I had the back of the Deardorff leveled.
You can see the kind of barrel distortion
that the lens has in it's modified config.