The 500 C/M is a great item. One thing I've found tricky about it is using the self timer. I got some good help from this site though. There are a couple of tricks to it. It won't work with a cable release attached. And you have to first slide the "T/0" switch at the front to "T". Then you slide the "VXM" to "V" and press the shutter. Then you have to slide the "T/0" to "0", and you can advance the frame.