Brand-new Medical Optical Lens ;o)

Is it a cup? Is it a measuring-cup? NO, it is an OPTICAl-LENS!

little cup for medicine

Ok, one day, I've take a look through this little cup an saw that it engaged the background,

Today I used this little item as optical lens and took a picture with.

The cup in the lens-board of my "Calumet" 4x5".
See the signs in the middle of the "lens".

Sides covered with black cardboard.

...after the 1st trial I found the luminous intensity of the "lens" is to high for taking a picture without shutter.
So I add an aperture with a diameter of 12.5 cm and used Ilford b/w Multigrade-paper.

The lens ready for use with the Calumet.

The photo, taken with the measure-cup.
Negative scanned and inverted digital in a positiv.

The original view, taken by a digital-camera:

The car in the foreground with the snow on the roof
has changed into another car.

Have you any experiences with unusually Lenses?

Please tell me/us about.