I got lost finding the right remote shutter release for my Canon 5D Mark iii. I have the Hänhel Combi for Canon, which I use to use with Canon 550D but seems no use with 5D Mark iii.
I googled and found a lot of different products but I don't want to buy a wrong one.
My budget is about 20£ for a normal cable release or about 60£ for a wireless one. I know there is one from Canon about 300£, but it's too expensive for me to spend on a shutter release. For wireless, infrared is not an option for me.