A quick scan of posts on the Facebook group "Experimenting With
Photographic Paper As Film" (it is a "private group" so one needs to
join to read/see/post) shows a number of people getting good results
using ISO ranging from 0.75-6.0.
Most just post exposure time and f/stop (and developer type and time
used) as the paper is UV-blue(green?) sensitive and has the same
metering issues that wet plate has.
Some also pre-flash as well to improve the overall contrast and speed.
On 2021-08-15 10:20, Martin magid wrote:
Has anyone found a developer that would increase the effective ISO of Harman Direct Positive Paper? I have seen estimates that the out-of-the-box ISO using, e.g., 1:2 Dektol, the ISO is 1 to 3.=============================================================================================================
Marty
