Magic Zoom Plus

Most flexible product image tool on Shopify! You get to download the app and test it out for yourself on mobile and desktop. There is a logo on the top of the image until you purchase the product. When compared to other offerings this is by far the best and most flexible. Very easy to customize the settings to my liking.

My only recommendation to Magic Zoom is to add a feature that would allow mobile users to "pinch zoom" on the photo.