Colour from Black and White

If you keep up the testing perhaps we'll have a Kodachrome replacement by the end of the year.

The technique has heaps of problems with it. I guess all im wanting to do is show people that this process can be done.There has been so much talk in APUG about this that i thought someone should finally do something! My earlier tests have colour problems, newton ring issues, contrast and density issues the list goes on. This is test number 41. My screens it are not a very good a way of making a colour image or at least so far. And enlarging causes the screen to become more and more obvious. creating annoying banding

Stephen - Try processing as a negative and invert/correct on the computer. Have you tried a wide spectral sensitivity film, like those from UV to extended red?

What is the screen composed of material wise?

I've been wanting to try something similar... though some kind of coloured grains in a gelatin mix applied over the mix and dried - it would proably come off during processing somewhere (or a prewash to do it), but you could use a screen filter like yours, perhaps gelatin+grains gain for printing.. or a re-application for a slide. A scan of just the filter, or randomly generated colour noise with the same distribution of colours % wise, pixel-shifted with arrow keys in photoshop over a scan of the resulting b&w under neath the b&w layer in photoshop, b&w layer set to luminance transfer mode for the peeps who scan sould do it to.

I have david grenet to thank he recently made a screen i tried and also gave me some advice on another screen i made, my first screen would have been good if it was able to be easily registered but it wasnt able to be easily registered and failed. davids screen was also good and less difficult to register but still had some issues. though with some modification it works well. All my screens are repetitive dye screens that are aded to the film during exposure and separated from the film during processing then later re registered to the film producing the colour slide. i have no intention of experimenting with starch grain etc.

Stephen Frizza said:

... all im wanting to do is show people that this process can be done.There has been so much talk in APUG about this that i thought someone should finally do something! ...

Click to expand...

Much to admire in that, Stephen. Laudable work.

Also the colour is quite good!

Whats the filter-factor?

I have found that over exposing the film and pulling in the processing really helps control the contrast with this emulsion though others are diffrent. I allow for 2 and a half stops for the RYGCB screen I have used for this image and then over expose a following stop which I pull back in the processing.

Very interesting.

Keep it up.

Mick.

Very interesting. I like the softness.