Switching from a DSLR to a very manual TLR has been a learning experience. So has using manual on-camera flash. I shot a couple of test rolls of B&W film through my Mamiya C330 with a Vivitar 285HV stuck to the side and powered on for every shot. Some of them turned out relatively pleasing to me, while others were, well, pretty harsh. Google is not being my friend and I'm wondering if any of you have some favorite web sites that break down how to effectively use a fully manual on-camera flash with no TTL and still get good exposures, no hot spots, etc. One of the better results, using flash as fill in fairly strong daylight: Less good: So I know I need to get a diffuser on the end of the Vivitar. Limited options for bouncing in most of the places that I shoot, especially considering the flash mounts to the side of this camera, instead of up top, so any bounce would have to be off a wall or something. No ceiling bounce. It would be good to find some resource where I can familiarize myself with useful rules of thumb for making better use of this setup with more soft even lighting and pleasing results. Thanks and Merry Christmas to all!