Resizing post thumbnails (zoom in and out)

Hello there,

This is my first WordPress website so I am still new to this, I hope someone is able to help.

I would like to be able to “zoom in and out” of the thumbnails of the posts on the home page to make them display the featured images more accurately. Right now they are cropping them quite heavily, like for example the logo on the first post. I know that because of size restrictions not every picture can be perfectly shown, so being able to just zoom out a bit would already suffice.

I tried changing thumbnail dimensions in: customization > advanced settings , but all this seems to do is lower the image resolution of the thumbnails.

Changing the thumbnail sizes in WordPress also didn`t work.

I am regenerating the thumbnails every time I try out something new, so far no success.

here`s the link : nlothdesign.co.uk

thank you for your help and keep up the good work, such a fresh and clean theme!