Lea, http://www.popphoto.com/lighting/3983/vivitar-285hv-review.html Its all in the trigger voltage. Looks like the 285 can NOT be used on the 5D while the 285 HV can. Interesting since from the name you would expect the 285 HV to be unusable on DSLRs too. Bob Lea Murphy wrote: I'm pondering adding a couple Vivitar flashes to my toolkit. -- ///// ( O O ) --------------------oOOO-----O----OOOo-----73 de w8imo@xxxxxxxx------ I plan to live forever. So far, so good...... |