If I designed this from scratch now, I'd probably make the originalWidth and originalHeight variables respect how the image is oriented when viewed. However, I believe the way it works now is that these variables reflects the pixel width and height of the physical image on disk. It may very well be that this is a portrait image (according to the image orientation metadata) that has the physical pixels laid out in a landscape manner. To be guaranteed that you get the original width and height adjusted for the orientation, call getSize() on the current AlbumObject.

So, for whatever it's worth, you can consider ${originalWidth} and ${originalHeight} as describing the width and height of the physical pixel data of the original file. Use getSize() to get interpreted values.

"orientation" is a local variable, but by all means, use it if you prefer so. Here's a full example to get the visual width of the current object:

currentObject.getSize().getWidth()