I'm trying to decide which external flash to purchase to use on my D70s. From what I've read so far the Sigma EF500 Super is looking like a great choice. After reading the external flash section in the D70s manual I'm lead tobelieve that my camera can only function as a commander with the sb800 or sb600. Is this true or would the Sigma also work?
What I would ultimately like to do is use the flash off-camera when doing location work that may or may not have electricity. Can anyone recommend inexpensive flash units that would work as slaves?
Thanks for any info.