Masonry Grid: Landscape vs Portrait Images

Hello,

Using the masonry grid when displaying galleries with this plugin, it seems that portrait oriented images are only shown that way when under a certain size. On the linked page, you can see many images that unfortunately cropped (face missing) because the grid is displaying a landscape version of the image. On other pages we uploaded smaller portrait images (450px wide) that displayed correctly. I’m curious why this is happening when in both cases they images are the same proportions, and the whole point of the masonry grid is to displays different sized images. Is there a way around this or a setting that I am missing? Thanks for the help.

The page I need help with: [log in to see the link]