How Is the featured image sized?

Hi,

How do you guys size the featured images so well in the acmephoto demo?
Is there a setting for featured image sizes in a post?

I am still trying to figure this theme out, to see if it meets my needs, to find out if I need to get another theme if this doesn’t work.

I am using the acmephoto pro. Building a photograph website.

I have figured out how to get all my latest post on one page. I have a plugin for downloading the photographs.

My issue is that my homepage shows all of the posts and featured image, but I want the height to be the same on all of the images. That is not the case.

Thanks for your help