Product Image Sizes

In [PLUGIN_DIR -> Templates -> product.php] – so in this case a single view – u can play around line 43 with “echo get_the_post_thumbnail($post->ID, ‘medium’); ” the size.
Try make ‘large’ or ‘full’.

If u need a custom size, goto functions.php in ur TEMPLATE_DIR and search for “add_image_size” – if it doesn’t exist, create:

add_image_size( ‘name’, x-size, y-size, true );

and rename the line 43 with your size-name.

As far as I know, u will have to upload the images again to see the effect.