Re EXIF data. Right now I have it showing make and model for each image, but there are some images where that information is not available. I'd like to make some kind of conditional statement that will display make/model if available, otherwise, some other field.

[marijnkampf]

There isn't an if statement per se, but you can show a certain tag if it is available only:

<#Tagged under: {Keywords} #>

The above line will only be shown if the metadata Keywords is available.