Hi all, I recently purchased the DP3 Merrill as a bargain portrait camera. To me it gets close to medium format look. Due to the poor high ISO, I'd like to sync a flash up with it. Does anyone have any tips for sending a wireless flash signal from the Sigma? I ordered a Yongnuo YN560 II Flash Speedlite as I've read elsewhere that it works with the Merrill. What kind of cheap wireles could I use with it? Also, is there any way to send wireless TTL Sigma data without forking out for a load of Sigma accessories?