Thanks for both of you that tried to help. After contacting Templatemonster, they addded the following into the Cherry options custom CSS:
.single-product .woocommerce div.product div.images img {
max-width: 200% !important; }
.woocommerce div.product div.images img {
width: 200% !important; }
which fixed the problem!
Thanks again
Ok thanks. I purchased the theme from templatemonster so I’ll try there as well. I have tried increasing the file size of the image however it’s effectively being displayed at about 250×250 while the image file size is 500×500 which is also the desired size I’d like it displayed at in the product image page.