U of S | Mailing List Archive | alt-photo-process-l | Re: more and more and more solarplate

Re: more and more and more solarplate

Hi Keith,
Please keep in mind my exposure times assume the 1800 DPI stochastic screen is being used. This finer screen really is key to getting smoothest midtones possible with the KM73 plates... I'm hoping to get some tests back from the guy I found here in Boulder as a new source for these screens and will running print tests with them this weekend.


taylordow wrote:

Date: Thu, 08 Mar 2007 15:05:16 -0600
From: taylordow <taylordow@sprintmail.com>
Subject: Re: more and more and more solarplate
To: alt-photo-process-l@usask.ca


The exposure times are very close to what Jon suggests, 10-11secs for a 5K lightsource. This is much less than I would have usually have exposed the plate for (45secs). From the very quick test I ran, there is definitely a deeper black although the midtones don't seem to have shifted at all. With such a short exposure/washout, I was worried that it might be uneven but it's actually very uniform, even in a smooth grey sky.

I have never liked deep blacks or stark whites in my work, preferring some tone in the highlights, and detail that you have to look for in the shadows; the km73s give you that plate tone in the highlights. But with Jon's method I may have to be careful, for the blacks are so deep.

As I mentioned before, I've played with numerous combinations of screen and image exposures and every time, the best was always 50:50 (+or- 10%).


On Mar 8, 2007, at 9:40 AM, Christina Z. Anderson wrote:

What effect did you notice with shorter washout?

Longley exposes the positive on KM73 for about 3 minutes (2.5 in summer sun) and then the aquatint on top for 1 minute. I find that an interesting combo of times...