Control the size of full-size images in a gallery?

Hi! It’s been a few years since I built my site, and I’ve forgotten some of the basics! I’m using a gallery page, and the thumbnails look great, but how can I control the size of the image once the thumbnail is clicked on? They’re not all appearing at the same size, and I know the original file is more than big enough to have a larger full-size display. You can see the page here, and the first four thumbnails are the ones I’m having trouble with.

I guess that is because you set a max size of 640px, and the first 4 pictures are very wide.

Check out the first photo underneath the video, there you can see the scale images and max size options.

Cheers, Jannis


Many thanks!! That was just the thing!