I finally had a chance to test out my new exposure calculator to figure out the correct time to expose the screens. I read the instructions that came with it and also watched a video on it as well and still had no idea on how to use it lol. The directions say to place the Saati 21-Step Sensitivity Guide on the screen, I’m assuming after the emulsion has dried on it. The next couple steps is where I get more confused, it says to optimize your exposure so that when washing out the image, you are left with 7 solid steps. If you see only 5 steps, you run the risk of pinholes or premature breakdown, and you should double the exposure time. If you see 9 steps, you will have lost finer detail in the image, and you should halve the exposure time.
After reading the directions, I decided to give it a try and see if I could figure it out. I place the exposure calculator on the screen in between two different images and plug in the halogen light on the screen exposure stand. I set the timer to see how long it takes till there is 7 solid steps left; in the past, I’ve left the screen expose for 12 minutes 30 seconds. I notice right away that the exposure calculator isn’t changing color at all and after 15 minutes I stop exposing the screen. That’s when I notice it actually burned the image of the step calculator into the screen.
According to the exposure calculator, I need to dial down my exposure time by 5 minutes next time. Here’s what the image area on the screen looks like after I washed them out and I’ll post an update on the next screen.