I might be able to help. The issue is that we all want to use the photography post type on gallery pages, but if gallery is selected and photograph is selected as the source, all photograph posts are displayed in the gallery, regardless of category. And there's no way to select photo categories on the gallery page.
My workaround is to use a regular post (not a Photograph post) and insert each photo into the post. Then group all the posts into categories. Then, for the page, select Gallery as the page template, Post as the source gallery and the post category from the dropdown box. That gets your photos organized into nice little galleries on a single page with the pop-up arrow box thing that makes Lensa so cool.
Here's how it turned out: