Jelly Bean :: How To View Images From DSLR

I decided to purchase a new camera bag with a section to carry around my Tablet, a Fujitsu M532 running Jelly Bean. The main reason was so that when we're on holidays, I can view the photos on the bigger screen direct from the camera - a Canon EOS 7D and them delete them if I don't like them. I've read some information on the internet and it seemed that I would need to download one of the Apps that also gives you the ability to control the camera from the Tablet; I'm not really bothered about that, but always there if I wanted it. So I downloaded DSLR Controller, and paid my $ 5.94. In theory as soon as you switch on the powered up camera the Tablet should detect it and hey presto. Well mine doesn't, and also if I select the option to search for it, no joy. I have purchased the correct cable converters to get the Tablet's Micro-USB into the Camera's Mini-USB and the cables work fine away from this set-up. I'm assuming that my Tablet is just incompatible, but surely there must be some way around this.