I've been looking to sell a Dual 533 Mhz PowerMac for a while now. I got it for $10 (I've got some pretty sweet hookups haha) and someone on CL e-mailed me offering a trade of a Canon Elan IIe with grip and a 540EZ flash for the computer. I'm definitely interested in the trade. I'm just curious, will the 540EZ flash work with my 40D? I've read that it works fine as a fill flash in manual mode, but then again, I read somewhere that it's for film only. Again, it's the EZ, not EX. What do you guys thing?