Kinemetron vs ShuttR

Is your 1/30 really 1/30? Kinemetron tests the shutter speeds of film cameras with nothing but your iPhone, and adds a light meter for when you go out shooting. TEST YOUR SHUTTER Fire the shutter next to your iPhone. Kinemetron hears the opening and closing of the shutter and shows the measured time next to the dial setting, with the error in stops. Microphone mode covers slow speeds from 1 second to 1/15 s. HANDS-FREE SERIES Pick a speed and keep firing. Each release is detected on its own, three shots per speed, then Kinemetron moves to the next speed. Finish a sweep and get a health report for the whole camera. FASTER SPEEDS WITH THE IPHONE CAMERA Open the camera back, point the iPhone camera through the shutter at a bright light and measure the light pulse. Camera mode is an experimental estimate for faster speeds. LIGHT METER Reflected light metering with the iPhone camera. Set your film ISO and get aperture and shutter pairs, ready to dial into a camera with no working meter. YOUR CAMERA COLLECTION Keep every SLR, rangefinder, TLR and medium format body in one place, with deviation charts by speed, measurement history and before-and-after service comparison. Camera profiles and history sync between your devices with iCloud. KINEMETRON PRO Three camera profiles are free. One lifetime purchase adds unlimited cameras, PDF health reports, before/after CLA comparison, CSV export and alternate app icons. Measurement accuracy is never locked behind Pro. HONEST LIMITS Kinemetron is a screening tool, not calibrated service equipment. The microphone cannot resolve fast shutters, and camera mode cannot measure curtain travel or exposure evenness. Verify important results with a specialist shutter tester. PRIVATE BY DESIGN All audio and camera frames are analyzed on your device. No account, no tracking, nothing sent to us. Optional iCloud sync stays in your own iCloud account.

Is your analogue camera's shutter still accurate — or has it drifted after decades of use? ShuttR Check measures the real shutter speeds of your analog camera using nothing but your iPhone's camera and a light source. No hardware testers, no sensors to buy, no guesswork — reliably from 8s down to 1/500. HOW IT WORKS Open your camera's film back, remove the lens, and put a light source behind it. ShuttR Check uses your iPhone's high-speed camera to measure exactly how long each shutter release lets light through, then tells you how far that is from the speed you dialled in — in fractions of a stop. The app walks you through every step. There is nothing to configure, nothing to interpret: set up, release the shutter, read the result. RELIABLE FROM 8s TO 1/500 — ShuttR Check measures dependably from 8 seconds down to 1/500. An iPhone alone cannot resolve 1/1000 and up with an accuracy worth trusting, and we'd rather leave those speeds out than hand you numbers that look precise but aren't. That range also happens to cover where mechanical shutters drift the most and where a deviation actually shows up in your negatives. Timed speeds slower than 1s are there too, for the cameras that offer them. WHAT YOU GET A guided, step-by-step measurement protocol — no photography or technical background needed Automatic calibration (checks your room is dark enough and free of flickering light) Every speed compared against its nominal value, with the deviation in stops and a clear OK / deviation / defective verdict A history per camera, so you can track a shutter's condition over time A camera collection to track shutter's performance including import / export function of your camera list A shareable "shutter checked" certificate (image or PDF) — perfect for camera sellers on eBay, Etsy, or classifieds, showing buyers exactly what they're getting SHUTTER TYPES Horizontal and vertical focal-plane shutters are tested and validated — these are the shutters in most classic SLRs and rangefinders. Leaf (central) shutters should work just as well, since the app measures the light pulse itself and doesn't care how the shutter produces it, but they haven't been through the same validation, so treat those readings as unconfirmed. WHAT THIS APP IS NOT ShuttR Check gives you dependable, repeatable information about how far your shutter speeds have drifted. It does not replace a calibrated measuring instrument, and the results are not a laboratory reference — if you need certified figures, a service technician with proper equipment is still the right call. It also does not measure shutter capping. The app times how long light passes through, not how evenly the curtains expose across the frame. A shutter that tapers or caps at one edge can still show correct overall timing here. WHO IT'S FOR Film photographers who want to know if their gear is actually accurate Camera collectors curious about a new find Sellers who want to offer buyers real proof of a working shutter