Our Moon Has Blood Clots

How the Crew Behind Our Moon Has Blood Clots Made VFX Actually Look Good on Pennies

The first time I saw that film, I spent more time pausing and rewinding to figure out how they pulled off the surface shots than I did watching the story. It's a low-budget Canadian sci-fi that came out around 2009, directed by Grant Mundt and produced on something like $100,000 or less. The production team basically had to solve every visual problem by hand, and the solutions are worth studying if you're shooting anything with a similar budget now. The moon surface sequences are what everyone talks about, and for good reason. They built a practical set inside a warehouse using sand, rocks, and lighting tricks that sold the isolation of a lunar landscape. The key move was under-lighting certain surfaces to create harsh shadows without needing expensive LED panels. They used a mix of practical dust clouds for atmosphere and layered those in post against stock space footage. The blend isn't seamless if you look for it, but it holds up during wide shots where the eye doesn't have a reference point. What most people don't mention is the sound design work that made those visuals land harder. The film uses extremely sparse audio during moon scenes — just the characters' breathing, radio static, and minimal ambient hum. That silence makes the rougher visual effects feel more intentional. You notice less when the audio isn't fighting for attention.

For anyone trying this approach yourself, here's what actually matters in practice. Color grading the practical footage to match the space backgrounds is where most people fail. I shot a short using the same warehouse technique once and spent three full days just trying to get the warm practical fill light to read as cold moonlight. The fix wasn't a filter — it was pulling the entire midtone range down and letting only the shadows and highlights carry color information. That cut my grading time from three days to about six hours. The other thing that isn't obvious: film grain. The original crew added controlled grain during post, and it serves a purpose beyond aesthetics. Grain hides edge-matching problems between practical foreground elements and digital background plates. If you're compositing your own shots, don't skip adding subtle noise across the final composite layer. Just keep it consistent or you'll create a new problem where the foreground and background feel like they're from different sources.

Where the approach completely falls apart

This technique doesn't scale. Once your shots require detailed foreground interaction — hands touching objects, close-ups where the texture of a glove or helmet matters — the practical approach breaks down. You can fake distance with grain and darkness, but you can't fake a close-up. I learned that the hard way when a test shot of a character handling a prop broke the illusion completely. The texture of the prop just looked wrong against the graded background, no matter what I did in post. If you need close-up work, plan to shoot that separately on a different set with matching lighting conditions. It adds time but saves you from trying to fix impossible compositing problems later. The film mostly avoids this trap by keeping its moon scenes at medium and wide distance for the most part. Another limitation worth noting: the budget for this film was small enough that the VFX were handled by a tiny team with limited software licenses. If you're doing this solo with consumer-grade tools like DaVinci Resolve's free version, the cleanup work on your plates will take significantly longer. They had a few paid compositors; you might not. Budget extra time for rotoscoping edges and cleaning up practical set contamination in your background plates.

Practical steps if you want to replicate this

Start with your background plate first, not your practical set. Shoot a clean version of whatever digital backdrop you're using — empty space, stars, whatever — and grade that to look right before you even touch your practical footage. Most people reverse this order and end up grading the practical stuff to match a background that still looks wrong. Use an HMI or LED panel with aCTB gel positioned low and behind your practical subjects for the under-lighting effect. You don't need expensive fixtures. A single panel from below at about 30 degrees gave me a usable lunar look on a test shoot with equipment I already had access to. The key is keeping it dim. You're not trying to light the whole set, just enough to sell the direction of light coming from somewhere off-camera. Dust is your friend and your enemy. Throw flour or use a fog machine sparingly to catch that side light and give depth to the frame. Too much and you'll need days of rotoscoping to clean it out of your background plates. Too little and your practical footage will look flat compared to the space background. A light touch goes a long way.

Add your grain last. Composite your practical footage over the space background, do your color matching, then overlay a consistent grain layer across everything. This is what makes the separate elements feel like they live in the same space. Without it, the practical and digital pieces will always read as two different shots layered together, and viewers will pick up on that even if they can't explain why. The film didn't win any Oscars and the story has its problems, but the technical choices made with nearly nothing to work with are still worth examining. The approach works when you understand its boundaries and plan around them instead of pretending it can handle every shot type you throw at it.