True silver-halide physics. Live in your viewfinder.
Unlike simple post-capture filters, Diopter runs custom Metal Shading Language shaders directly on the Apple Silicon GPU at a locked 60 frames per second.
Six Iconic Film Stocks
Documentary Chrome, Vintage Neg, Golden Neg 1970, Vivid Slide 50, Pastel Neg 400, and Cine 3200K Tungsten meticulously calibrated to original chemical curves.
Organic Silver Grain & Ruby Halation
Simulates physical silver crystal clumping and the characteristic red halation bloom caused by light reflecting off the camera film pressure plate.
Zero Shutter Lag
Hardware-accelerated pipeline ensures that what you see in the rangefinder is captured instantaneously without frame stutter.
Knurled mechanical dials for thumb ergonomics.
Designed for one-handed operation on the street. Every dial delivers tactile haptic clicks that make adjustments feel physically mechanical.
Complete Manual Exposure Control
Fine-tune Shutter Speed (1/8000s to 1.0s), ISO (25 to 6400), Kelvin White Balance (2000K–10000K), manual focus, and ±3.0 EV compensation.
iPhone 16 Pro Camera Control Button
Seamlessly integrates with Apple's new hardware Camera Control button for physical two-stage shutter actuation and smooth parameter scrubbing.
Live Rangefinder Telemetry
Neon focus peaking, live RGB luma histogram, and highlight zebras guide your exposure decisions before you press the shutter.
Your custom chemical darkroom recipes.
Step beyond factory presets. Diopter’s Recipe Studio allows you to formulate and store custom film chemistry in dedicated quick-recall slots.
C1–C7 Custom Recipe Slots
Save distinct recipes for golden hour street photography, overcast architectural shoots, and warm tungsten portraits.
Fine-Grain Emulsion Tuning
Adjust grain roughness, highlight softness, shadow contrast curves, sky chroma density, and white balance shift matrices.
Authentic Quartz Date Back
Optionally imprint classic 1980s orange quartz date stamps directly onto the corner of your film negatives.
Inspect negatives on an illuminated light table.
Recreate the tactile ritual of examining developed negatives on an acrylic 5500K daylight-balanced light table.
Interactive 4X Spatial Loupe
Glide the precision brass loupe across your contact sheet with spatial pitch and yaw to scrutinize grain structure, critical focus, and halation bloom.
Uncut 35mm Proof Strips
Review your shots as authentic negative strips with perforated sprocket holes, edge code markings, and frame numbering.
Slow down with 36-exposure roll discipline.
Infinite burst mode breeds disposable snapshots. Diopter restores value to every single frame by honoring physical roll constraints.
36-Frame Canister Workflow
Commit to a 36-exposure roll. Once finished, rewind and develop your canister into an archival contact sheet.
Direct Apple Photos Integration
Exposures save directly to your personal Apple Photos library with full simulated analog EXIF data (emulsion name, aperture, ISO, and shutter speed).
Engineered for Creative Sovereignty
Pure Apple Silicon performance with zero cloud compromises.
Metal GPU Shaders
Native Metal Shading Language pipeline renders 60fps real-time silver-halide grain and halation without overheating.
Zero Cloud Silos
All photographs remain strictly in your Apple Photos library. We operate zero cloud image servers and store zero user metadata.
Zero Tracking SDKs
No ad networks, no analytics trackers, and zero behavioral telemetry. Your creative work is exclusively yours.
Hardware Camera Control
Built for iOS 18 with native support for the iPhone 16 Pro Camera Control button and physical haptics.
Rediscover the craft of analog.
Download Diopter on the App Store today and bring deliberate 35mm rangefinder discipline back to your photography.
