I have the exact same problem. I’ve specified some dimensions but not all my pictures have the same dimension ratio, some are landscapes and other portraits and I even have some super long or wide. When the thumbnails appear on my gallery page they are stretched either horizontally or vertically to match the specified size.
I would like the thumbnails to be either cropped versions of the pictures or in the worst case to have different dimensions.
I would like to know if there’s something that can be changed within the plugin or if anyone knows if I can do it by generating the thumbnails in some other way. I really like this plugin, it’s clean, simple yet very beautiful and definitely better that the other ones I tried.
Just to clarify, I can’t select dimensions that will work for all my images.
Thank you for your great plugin and thank you bpedleyWP for raising the issue.