I don't use any kind of diffuser for my albumen exposures. I do move the frame occasionally since I'm usually exposing indoors through a window.

With albumen (contrary to what one might expect) direct sun produces a slightly lower contrast image than indirect sun. Direct sun is also about 3 stops faster.

Here's my usual high-tech exposure setup--

http://www.apug.org/forums/attachmen...3&d=1151344340

If I prop my printing frame up on a scanner, is it a hybrid print?