LensCAD is the first tool that fuses image correction and CAD drawing into one continuous pipeline. Correct lens distortion, fix perspective, calibrate real-world scale, trace geometry, dimension your work, and export a 1:1 DXF — without ever switching applications.
Scan2CAD assumes you already have a clean, scaled image. Lightroom corrects photos but doesn't know what a dimension is. AutoCAD can trace, but can't fix your photo first. You've been stitching together three apps and hoping the measurements survive each handoff. LensCAD replaces that entire chain with a single pipeline where scale is never lost.
Upload a phone photo of any physical object
Barrel & pincushion distortion removed
Keystoning & angle corrected to true orthographic
Set real-world dimensions from a known reference
Draw geometry over the corrected, scaled image
Add ortho, aligned, angle, and radius dimensionsUpload a phone photo of any physical objectBarrel & pincushion distortion removedKeystoning & angle corrected to true orthographicSet real-world dimensions from a known referenceDraw geometry over the corrected, scaled imageAdd ortho, aligned, angle, and radius dimensionsThree exit points. Export after correction to trace in Rhino or AutoCAD, or stay for the full workflow.
Choose canvas: Letter, Tabloid, A3, A4, or custom
Full geometry toolset on a blank canvas
Add dimensions to your drawingChoose canvas: Letter, Tabloid, A3, A4, or customFull geometry toolset on a blank canvasAdd dimensions to your drawingNo photo needed. Set canvas size (Letter, Tabloid, A3, A4, or custom), pick units, draw with the full toolset. Same 1:1 DXF export.
Two workflows, one app. Scan Mode bridges camera and CAD. Draw Mode is pure CAD from scratch. Both export 1:1 DXF files.
LensCAD doesn't just stack an image editor on top of a drawing app. The tools are designed to cross the boundary — image-aware drawing, geometry-aware correction, and measurement that flows through the entire pipeline.
Paint a brush stroke over your photo and LensCAD's contour detection fits precise geometry to the edge beneath. The image processing finds the shape; the CAD engine creates the entity. Switch between brush-over-contour mode and click-to-place mode with Canny edge snapping — your drawing tools see the image data in real time.
Unlike Lightroom or Camera Raw, every pixel correction in LensCAD is optimized for geometric accuracy, not visual aesthetics. Barrel distortion removal, perspective correction, and brightness adjustment all serve the final dimension — not the final photograph.
Every line you draw inherits the real-world scale calibrated from the photo. Measure any traced geometry in inches or millimeters instantly. Dimensions read in real units, not pixels. The DXF exports at 1:1 — put a ruler on the print and it matches.
Server-side OpenCV contour detection gives you a starting point. Adjust contrast, threshold, detail, and smoothing — then refine with manual polylines, smart fit tools, trim, fillet, and snap. Image processing provides the rough shape; CAD tools provide the precision.
Your corrected, scaled photo stays visible beneath your traced geometry at all times. Toggle image visibility, adjust brightness and contrast on the fly, zoom to 50× with the precision loupe. The image is a living reference, not a static backdrop — and you can go back to adjust corrections without losing your trace work.
Polyline, curve, circle, rectangle, fillet, trim, mirror, rotate, scale, copy/paste, group move. Snap to endpoints, centers, quadrants, midpoints. Smart guides with H/V extensions and intersection snap. Ortho constraint. Auto-weld. This isn't a simplified sketch tool — it's a real drawing environment.
Upload a photo, correct and scale it, trace over it. The calibration you set in step two carries all the way through to your DXF export.
Upload a photo of any physical object — a part, a wall opening, an installed fixture, a piece of hardware. LensCAD reads EXIF data and applies lens distortion correction automatically. Then fix perspective with four modes: click four corners, align perpendicular lines, fit a circle/ellipse, or use the printable ArUco reference sheet for one-click correction. Supports JPEG, HEIC, PNG, DNG, and TIFF.
Set scale using a ruler in frame, a known dimension, dual rulers for independent X/Y calibration, or the reference sheet for automatic detection. This is where LensCAD diverges from every other tool — the scale you calibrate here is locked into every traced line, every measured distance, every dimension, and the final DXF export. The precision loupe gives you pixel-level point placement.
Trace geometry over your corrected, scaled image using a full set of drawing tools. Smart contour-fitting tools and auto-trace give you a head start; manual polylines, trim, fillet, and snapping give you precision. Add dimensions to verify measurements on the spot. Download a 1:1 scale DXF with geometry and dimensions on separate layers — ready for Rhino, AutoCAD, Fusion 360, or any CAD software.
Image correction tools and CAD drawing tools, designed together. Expand any section for details.
Image correction and CAD tracing in one continuous workflow. Scale carries from photo to export. No file handoffs, no lost precision.
Every pixel correction optimized for geometric accuracy, not visual aesthetics. Distortion removal serves the final dimension — not the photograph.
Smart tools see your photo's edge data in real time. Brush over a contour and get precise geometry. The drawing tools and image processing aren't separate — they're fused.
4× magnification with snap indicators, guide intersections, and live brightness preview. Pixel-perfect placement on any device.
Print a free ArUco sheet, include it in your photo, get automatic perspective and scale in one click. Zero manual calibration.
Skip the photo. Set canvas size and units, draw from scratch with the full toolset. A scaled CAD sketchpad in your browser.
LensCAD is browser-based. Best on desktop for precision work, but fully functional on phones and tablets with a custom touch interface, landscape layout, and the same complete toolset. No install required.
Photograph installed equipment, wall openings, pipe runs, panel layouts, or existing conditions on site. Correct the image, set scale from a tape measure in frame, trace what matters, and walk away with a dimensioned DXF. No survey equipment required.
Photograph a part you can't remove or disassemble. Correct lens distortion, calibrate scale, trace the profile, and export a manufacturing-ready DXF. One photo replaces an hour with calipers.
Gaskets, brackets, shims, joint profiles, curved components. Photo the original, trace over it, export a DXF for CNC, laser, waterjet, or plasma.
Capture vintage hardware, ornamental details, or discontinued parts. Trace accurate profiles for faithful reproduction.
Document existing conditions fast. Photo a wall, a floor plan detail, or an equipment footprint. Trace and dimension it on the spot.
Blank canvas mode: set dimensions and units, draw from scratch, add dimensions, export a scaled DXF. No photo needed.
Different objects call for different approaches. Each walkthrough shows a complete photo-to-DXF workflow on a real part.
4-corner perspective → autotrace heavy → minimal cleanup. The fast path for gaskets, brackets, and flat profiles.
2-line perspective correction → manual tracing with snap & guides. The surveying workflow for installed equipment and site conditions.
Contour detection + manual refinement. Auto-detect gets you 80%, precision tools finish the job. Trim, fillet, and snap to clean up.
ArUco reference sheet for one-click perspective + automatic scale. The precision path when accuracy matters most.
No photo needed. Set canvas size and units, draw with the full toolset, add dimensions, export a scaled DXF. Browser-based CAD sketchpad.
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Built by PartCraft — engineer, woodworker, and the guy who decided to stop waiting for someone else to solve his photo-to-CAD workflow problem.