Sometimes it's impossible to bring your setup close enough to a subject because of that diffuser & flash setup so I've been playing about to see what sort of results I can get by shooting using available light.
This is a 74 shot stack, processed in DxO and stacked in Macro Studio. Happy enough with the detail captured and overall lighting.
OM-1 MK2, OM 90mm f3.5
1/200s, f/5.6, ISO 640