RA=4 Reversal Processing

[pound]

Sharing the RA4 reversal printing video here. What is RA-4 Reversal. Usually one use a color negative to print on RA4 paper to produce a color print.

In the reversal process, we use the RA4 paper to shoot directly in the camera and then reverse process it.

As this is first time we were trying this process, there was a lot of trial and errors. Certainly more testing is required is get better results.
Paper ; Fujifilm Crystal Archive cut down to size
Chemicals : Dektol and Fujihunt RA-4 Chemicals
Camera : Chamonix 45N2

Do watch to the end of the video to see our final results especially the portraits taken on a 8x10 camera!



Click to see bigger photo :

[koraks]

Yep, that looks pretty similar to the results I got when I tried it. I messed around a bit with all sorts of filters but never got something to my liking, so left it at a single quick & dirty experiment. Still a nice trick though.

[Bill Rolph]

If I recall correctly, there is no yellow filter layer in RA-4 paper, which would prevent it from ever accurately rendering color using an in camera exposure. I could be wrong on that though.

[Molli]

You might want to take a look at Joe Van Cleave's videos on this:

https://youtu.be/ry6ycSgT8g8

This is a two part video with the other on fellow participant Ethan Moses' (of Cameradactyl) channel:

https://youtu.be/BkcIk8M4KVc

[pound]

Yep, that looks pretty similar to the results I got when I tried it. I messed around a bit with all sorts of filters but never got something to my liking, so left it at a single quick & dirty experiment. Still a nice trick though.

I see. Going to try some Arista magenta n yellow filters. Not sure will I do this long term but it was fun to do.

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[pound]

If I recall correctly, there is no yellow filter layer in RA-4 paper, which would prevent it from ever accurately rendering color using an in camera exposure. I could be wrong on that though.

Yeah maybe something close enough will do. The cyan cast remains so maybe we need to add a yellow filter of some kind.

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[pound]

You might want to take a look at Joe Van Cleave's videos on this:

https://youtu.be/ry6ycSgT8g8

This is a two part video with the other on fellow participant Ethan Moses' (of Cameradactyl) channel:

https://youtu.be/BkcIk8M4KVc

Yeah.. went though these 2 and other RA4 reversal video youtube. Certainly helpful else I will not even know where to start.

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[koraks]

I see. Going to try some Arista magenta n yellow filters. Not sure will I do this long term but it was fun to do.

You might want to try using a black piece of processed C41 film as a base filter and then add yellow + magenta filters to get closer to where you want to be. The RA4 paper curves are obviously optimized for tungsten light shining through a C41 film mask, so if you set up your shot to come as close to that situation, you're automatically closer to the ballpark where RA4 will work. Contrast is another issue; RA4 paper is quite contrasty, so you might either use low-contrast light or try messing about with adding sulfite to the developer to reduce contrast. I never went as far as trying the sulfite though.

[dsphotog]

I'm wondering how well this would work making darkroom prints from slides...
Has anyone tried that?
Sure miss Cibachrome!

[koraks]

Yes, Ron Mowrey used to do that when he was still among us, there's one or two threads about it on photrio.