Neewer TT520 Flash Speedlite for Canon/Nikon Digital SLR Cameras… 3.9 out of 5 stars CONSUMER REVIEWS(122) Compatible with Canon Digital EOS and Nikon DSLR cameras This flash has a guide number of 33 (ISO 100), a color temperature of 5600K+200K, and 4 AA batteries (Alkaline or Ni-MH are usable) power the unit. One flash [...]
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