On Magento ver. 22.214.171.124 I'm using PT-Focus theme, embedded cloud zoom for media in the product view page and embedded configurable swatches.
On the product page i have color swatches, when I click on them the product image changes but with the increased dimensions (width & height), on click the product image pops-up bigger than the original image. Can someone help me on this.
That sounds like a problem of your current theme.
Can you try using RWD? (just to be sure the issue is on the theme and not into other module).