I made one and posted on Flickr showing the construction and use. The post on Photrio is below containing the Flickr link.
https://www.photrio.com/forum/threads/diy-localized-test-strip-printer.115143/
Let me know if you have any questions.
All the best
Todd
is useful, it is very comfortable since it is only a 5x7 paper strip, developing and passing it through the trays is easier.I just looked up what it is -- looks like it does the same job as cutting narrow strips, but faster, and keeps all the test strips on a single sheet. Only works in one size (5x7 inch?), but it's just a little math to keep your exposure as you change magnification, and filtration won't change (whether you're using single filters or split grade) if the exposure doesn't.
Just last wek I wondered "why is there no commercial device that puts the same image detail at various exposures?"
Blame on me!!!
I just realized that I got a commercial version in my collection.
It was made by Tetenal.
I is an oblong black plastic casing with a 25x90mm opening. Inside is a plastic drawer covered with a clear foil, under which an oblong piece of paper can be put. The drawer can be pulled out in steps, yielding 6 adjacent exposures of same image detail.
Bien ya tengo para estar entretenido.. veo que otro muchacho tiene casera..Here photos of the Tetenal device:
https://www.picclickimg.com/00/s/MT...Herstellung-Mini-Entwicklungdose-09324-_1.jpg
https://www.picclickimg.com/00/s/MT...Herstellung-Mini-Entwicklungdose-09324-_1.jpg
The drawer has molded-in indents at its back and the cassette has molded-in a spring.
In a DIY version one could serrate one edge of the drawer and install a bulged leaf-spring at the inside of the cassette.
However the Tetenal approach with the spring at the flat side yields a smooth pulling operation, that might be disturbed a bit by edge serrations.
Excelente, con este modelo tengo para estar entretenido... Muchísimas graciasHere are some snaps of the test strip printer you can make from the instructions in Way Beyond Monochrome. The small panel is used with the printer open to produce conventional test strips. The top with the rectangular opening is used to make multiple exposures of the same area of an image by moving the paper between exposures. Using the notches inn the dark allows you to make these evenly spaced.
View attachment 249587 View attachment 249588
I just checked, but did not see that Tetenal test-strip printer listed in any of my Tetenal publications, going back to the 60's. By its design I assume it to be from the 60's/70's.
In 1980 however they offered a test printer for 4 images on a 9x12cm sheet.
Here are some snaps of the test strip printer you can make from the instructions in Way Beyond Monochrome. The small panel is used with the printer open to produce conventional test strips. The top with the rectangular opening is used to make multiple exposures of the same area of an image by moving the paper between exposures. Using the notches inn the dark allows you to make these evenly spaced.
View attachment 249587 View attachment 249588
I have followed the model of the images 249587/88, and I have made some adjustments, tomorrow I will be sharing the prototype,Nice! I saw the design in the Way Beyond Monochrome, very cool to see one made well. I made one from some cardboard, not very even without the notches but it kinda works. Especially handy to figure out how long to burn, or if the negative has too much change in density from one side to the next. One has to adjust your timer for every exposure so that makes it harder to use, I made my own timer to automate that.
It is a point to improve ... previously had 2cm, change to 3 cm. the next step is to try ... I hope to give me time to perform these tests.Having used the Ralph Lambrecht model now on many occasions the only modification which might on occasions be worthwhile is making the strip a little wider than one inch. Occasionally but only very occasionally, the one inch strip does not capture enough of the negative to get as many details as I'd like to make a decision but this is a very minor point
pentaxuser
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