Hi, among the second hand camera gear that I have, there is a working Sunpack B3000. Would anyone of you give a tip or two how to use it? I have a few Nikons (FE, FM2 etc) and a Zenit ET (SLR). It would be nice to mount it on my FED3 as well, but a special cable would be necessary for that. The flash can be set to ISO 25-1000 with slide. There is also a slide that switches the flash between four different modes: M, 1/16, A (white) and A (green). I am not sure if the output is variable, or if the different modes only offers help to combine the output with different ISOs and and apertures. Actually, I have only used fully automatic flashes before, so I am a bit lost. It feels stupid to sacrifice a fresh roll of film before having some tips to start with. In short, thanks in ahead for any help that you could offer!