Category: exs notebook

Split Grade Printing

Posted on Posted in exs notebook, labnotes
split grade calculation
from patent

multiple filter, multicontrast printing.

Split Grade was the first way the variable contrast was printed. Commercial printing made use of special two filter timers. Both filters were used sequentially. In the beginning, filters were made by the lab. DuPont published the how to: which dyes to use. After several years on the market, filter sets were made. These were considered expensive so the use of 2 filters continued in many labs.

The filter cradle isn’t shown in the video.

Oct23 ongoing Picture

Posted on Posted in art school, exs notebook, picture post, the arc, Theory: landscape

picture post, continuing. Abstraction has limits. Not as final as conceptual work, but there is little midgame work to be accomplished – certainly not with photographs. Realism has a silencing effect.

These ongoing, table edits include originals from prior posts. These are reminiscences of portfolio items I called Original In Color (’60s). These pictues are current.