I do Delta 100 in D-76H 1:1 and 1:3 at EI 100, Xtol 1:1 EI 100, Rodinal 1:50 w/25g/L sodium sulfite EI 100 and Rodinal 1:50 (no sulfite) EI 50.(posted 9058 days ago)If you have _insufficient_ shadow detail, then of course try EI 64 or so, reducing development time by maybe 10%.