CullMaster
Find the best shots in minutes, not hours.
Included in Basic
What it does
Culling is the most tedious part of photography: hundreds of near-identical frames, and you have to pick. CullMaster groups them into series, analyses every frame on-device — sharpness, exposure, motion blur, composition, faces, blinking, even emotion — and surfaces the strongest candidates. Then you rate with a keystroke.
The analysis is style-aware. A landscape frame is weighted differently than a portrait or a sports burst. The tool learns from your corrections over time and adjusts its weights per style. But it never decides for you: the star rating is always yours.
Ratings are written back as standard XMP sidecars, so your picks stay compatible with Lightroom. Export the keepers, flag by color, add notes, compare histograms — all without leaving the keyboard.
Facts
- Analysis
- Sharpness, exposure, composition, noise
- Detection
- Face, blink, emotion, object
- Color flags
- Ctrl+1/2/3
- Ratings
- Lightroom-compatible XMP sidecars
Key features
- Two-stage analysis (thumbnail faces + full image)
- Face detection (OpenCV Haar cascade)
- Blink / eyes-open detection (OCEC)
- Emotion recognition (FER+, 8 classes)
- Object detection (YOLOv8n, 80 COCO classes)
- Sharpness scoring (Sobel Tenengrad + Laplacian)
- Motion-blur detection (FFT)
- Exposure analysis (histogram and clipping)
- Micro-contrast measurement
- Noise estimation
- Symmetry analysis
- Composition scoring (rule of thirds)
- Color-harmony detection
- Focus-stacking detection
- Style detection (10 photographic styles)
- Adaptive per-style weighting
- Feedback learning (adjusts weights over time)
- Analysis cache for instant re-runs
- Series grouping (2-hour tolerance)
- Auto-select the best in a series (median + 0.5σ)
- 1–5 star rating stored as XMP sidecars
- Color flags (Ctrl+1/2/3)
- Image notes (500 characters, searchable)
- Lightroom-compatible export (XMP)
- Batch export to JPEG
- ZIP export for clients
- HTML gallery creation
- Histogram comparison between two images
- Before/after view (B)
- Fullscreen preview with zoom and pan
- Focus peaking overlay (F)
- Rule-of-thirds overlay (T)
- Slideshow mode (D)
- Automatic cull rules (eyes closed, blurry, …)
- Quick export (E) to the last destination