I'm looking at getting a relatively inexpensive flash for my a100 (~$200 USD). I'm totally clueless to new flash technology (ie TTL, wireless, etc). I like the idea of wireless. Do the wireless ones work in conjunction with the onboard flash?
Swivel head would be nice, but not necessary.
My intended uses would be indoor photography/general fill in low light & as a macro fill (probably with a 'custom' diffuser like some tissue taped over the flash ).
I'm looking at ttl wireless ones such as:
-minolta/sony 36xx series
-sony f42am
-sigma dg 530 super
Anything other models I should be looking at? Anybody used these flashes and can compare?