- Oct 19, 2005
- Fraser Valley B.C. Canada
I used to own the 3600 some years ago and shouldn't have gotten rid of it. I sold it for almost nothing back when. I also checked into the 544 flash and they look almost identical. What is the real difference between these 2 flashes from Sunpak? I plan to use it with my Pentax 67 again, as it worked well with that camera.