About Us

About Me

I'm Siobhan M. Perry, an environmental photographer and photogrammetric surveyor based out of Saint Louis, MO. My specialty is urban wetlands and their water-driven geomorphological alterations.

What I do

My shop focuses on nature-based photographic prints in multiple formats.

Along with my camera, I hold an FAA Part 107 certificate and conduct aerial photography and videography drone flights. Paired with base-and-rover RTK survey equipment, I can push beyond a 2D image to photogrammetrically create orthomosaics; digital elevation, surface, and terrain models; and 3D point cloud and textured models to retrieve areal data (e.g., elevation or topographical changes).

Click HERE for a list of services offered.

Do you have a custom project in mind? Message me at siobhan@pennandmodi.com or @muddycreekgreens on Instagram. Let's start a conversation!

Who's behind the name

Penn & MoDi is named after our two cats.

Penny is a territorial blue tortoiseshell who loves taking afternoon naps in slivers of sunlight. Moe is a black domestic shorthair with chaotic-neutral energy and a relentlessly unbound enthusiasm for perfecting the expansiveness of his operatic repertoire.

Jam sessions held at 3am, daily.

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