Dear community,

I'd like to start subminiature photography and am currently looking for a camera that matches the following criteria:

(1) subminiature format, e.g. 110, 16mm or minox 8x11
(2) built in flash (or attachable flash unit, but it still has to fit into a trouser pocket)
(3) lens > 30mm

I believe the majority of cameras matching these criteria have fixed exposure. What is your experience with those, are they actually usable in varying light circumstances?