1st try Gradient Universal Filter

[Radazz]

Here is my first try at making one of these Gradient Universal Filters

10x Infinity Zeiss Axioskop
Slide is labeled Leucite Phonolite Vesuvius Italy 1949

Printer was out of black ink, so this one has a dark blue tint.





Really interesting technique. I need to experiment further.

Enjoy,
Jim

[McConkey]

Jim, you got some really great results! Some real deep shadows and a really good effect! I'm a big fan of the blue but i suppose that is always down to personal preference!

Did you have the GUF under the condenser on the base?

Thanks for sharing and keep it up!

[Radazz]

I pushed it in above the filter tray

[Radazz]

Here are some better examples.
I’m experimenting with my cell phone through the formerly pee-encrusted Spencer 13 MLH.

A couple of vintage plant sections 10x And 44x
The first photo is with circular oblique stop, the others with the GUF.
GUF inserted in the filter slot.
One set of gradient strips was printed blue, and another consisting of several layers tinted different colors and combined in Photoshop. Both were then printed on clear acitate with an old HP 952 photo printer. next I sandwiched together 2 copies print side to print side. The multi-colored one turned out sort of lavender. Finally the notched tape to control the effect. I’m still searching for a clean mounting that is easy to control under the condenser. I’m having much better luck with a mount about 2 cm wide as opposed to closer to the width of the filter slot.
I’d include a picture of my complete filter, but it still looks just as ugly as all the examples on line.
I want to find a carriage that will fit into the filter slot on any of my microscopes that doesn’t look like little patches of tape haphazardly, I mean experimentally stuck all over it.

I suggest going through some old prepared slides you may have put away with this filter.
Some of them will be complete duds, but a few might be spectacular.
Darkfield and oblique illumination can do some wild things with these old stains.

[Radazz]

The last shot can make me see an illusion I sometimes see looking at a photo of a field of lunar craters. Suddenly my perception of the light direction reverses and all of the craters become bumps and the rims look like deep canyons.