Sony Mavica MVC-FD91 Digital Camera "vivitar lense angled" Questions

...get a standard flash bracket at any camera store to hold the flash. I use a Vivtar 283 flash with a Vivitar SL-2 trigger. It completely eliminates any problems with the 91's flash power. Because of ...

Vivitar screw mount lens, Nikon D-80 camera. Is there an adapter for this? I have some old screw-mount lenses which I would like to be able to use with my D80. One in particular, the Vivitar 28 mm ...