Is it possible to link a thumbnail to a different lightbox image?

I would like to crop my thumbnails to a uniform size that focuses in on one part of the image and have the pop-up lightbox include the full size image. Ie crop all thumbs to 200x300px portrait and have full images for the pop-ups.

Has anyone got any experience with this or able to give some pointers?

Cheers, Y

Many thanks for that!

Unfortunately the cropped resize is not cropping in to the photos - it's resizing them down from the large. Neither is it maintaining the correct width to height ratio as set. If the image is landscape it's maintaining that format and vice versa.

Is this feature not working correctly or am I maybe doing something wrong?

Thanks for your assistance! Y

Hi Grilldan - I'm still having some trouble with the Gallery crop resize as outlined above - do you have any ideas? Thanks again - Y.