Lachlan Young
Member
HP5+, 400TX, 400TMY-II and Delta 400 all have remarkably similar toe shapes. HP5+ has slightly higher shadow speed. All will gain some real shadow speed in a properly formulated PQ/ PA type developer (e.g. Microphen, DD-X, Xtol, XT-3 - no guarantees about various garden-shed formulae).
Delta 400 underwent a significant revision about 20 years ago - which seems to have slipped by people who probably haven't used it in the intervening - part of which was to improve its latitude to underexposure.
A short scale subject will also give a misleading impression of a speed improvement.
Delta 400 underwent a significant revision about 20 years ago - which seems to have slipped by people who probably haven't used it in the intervening - part of which was to improve its latitude to underexposure.
A short scale subject will also give a misleading impression of a speed improvement.