Is customization of the magnifying possible in ZoomMaster App for my Shopify store? If yes how?

Yes. Open the Theme Editor, go to App embeds > ZoomMaster, and you will find these options (among others):

1. Magnifying glass size
2. Magnifying glass border size
3. Zoom level
4. Magnifying glass border-color
5. Magnifying glass background-color
6. Magnifying glass shadow
7. Grayscale image animation
8. Enable magnifying on mobile
9. Background color for zoomed image

Note:- Don’t forget to click Save in the Theme Editor, thank you 🙂

Get ZoomMaster app for Shopify storefrom here ZoomMaster