Friday, September 28, 2007

Cyanotype over Platinum Report 2

What you're looking at is the image from report 1 converted into a duotone. A duotone is made up of only two colors - in this case black and blue. The sky isn't blue because I took a color image and it sucked out the blue, it's blue because when mixing the colors I shoved the curve of the blue channel around until it looked good.

Once you have the two channels you can play around with them until it looks good - you could darken or lighten different areas, as an example. If I didn't want the grass to be faintly blue I could have erased the cyanotype layer in that area. But for now, let's just keep it simple.

I then broke apart the two channels and printed a negative for each using my usual methods.

Now, there's a zillion ways to do this, but this made sense to me for something to get started. I can compare my final image to what we see here and see if there's any resemblance at all. If so, that's a pretty easy way to do this. If not, I can try another method entirely.

I'm soaking three sheets of paper now (see the last entry) and have printed the negatives. The idea is that Monday/Tuesday when I get time to actually start making prints I'll have the stuff I need already. Platinum layer first, and then a day or two later cyanotype. I want to make sure I have two good platinum prints to start just in case a cyanotype goes poorly I have another shot. I'll report back on this when I have a platinum layer down.

Update: I saw a forum post from Denise Ross today saying she prints the first layer, then just measures it and prints the second negative to fit! I'm going to proceed as planned, but if I get to the cyanotype stage and the negative's clearly off I'll use this as plan B.


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