The 710 is better.
Canon is a large global technology company that produced the Pwowershot A640 camera. Reviews of the Powershot A640 can be found online or at the Canon website.
One can read the reviews on the Canon PowerShot A640 by visiting Amazon which has many reviews created by customers who purchased the Canon PowerShot A640.
A Canon Powershot has 10 million effective pixels, 21 shooting modes, 1cm macro mode, digital tele-converter and safety zoom and a 35-140mm 4x zoom lens.
on the back theres a small button push it then push down on the thing that covers it
Try pressing the *shift button at the bottom left corner. This should change the capitol and lowercase of it. Hope this helps. But if you meant how to change i from automatically doing that, I don't think you can do that. You just have to switch it real quick everytime.