By Innovative Measurement Solutions • November 12th, 2025
Measurement instruments are now essential to quality, efficiency, and compliance in the realm of high-precision production.
However, two technologies frequently clash when it comes to obtaining precise 3D data:
Photogrammetry and 3D scanning
Both are capable of producing digital representations of actual objects, but they are not interchangeable. Which is superior for accurate measurement, then? Let's dissect it.
3D scanning records millions of data points on a surface using optical sensors, lasers, or structured light. The outcome? an extremely accurate digital "point cloud" that replicates the thing down to the micron level.
Ideal For: Inspection against CAD models, precision parts, and complex geometries.
Range of Accuracy: Usually 0.005 – 0.1 mm.
Aerospace, automotive, medical devices, and electronics are among the industries that use it.
For instance, a digital model accurate enough for tolerance analysis can be created in a matter of minutes by scanning a turbine blade with complex curves.
In photogrammetry, a 3D model is produced by processing 2D photos taken from various perspectives using software. Although less accurate, it is quicker and less expensive.
Ideal For: Quick viewing, large objects, and outdoor settings.
Accuracy Range: Usually between 0.2 and 1 mm, depending on scale and setup.
Construction, archaeology, cultural heritage, and surveying are among the industries that use it.
For instance, engineers can use a drone with a camera to map a huge structure or construction site, but not with the precision required for precision parts.
Feature | 3D Scanning | Photogrammetry |
Accuracy | Extremely high (0.005 – 0.1 mm) | Moderate (0.2 – 1 mm) |
Speed | Fast for small/medium objects | Faster for large areas |
Cost | Higher (equipment & software) | Lower (camera + software) |
Best Use | Precision inspection, CAD comparison, manufacturing | Mapping, visualization, non-industrial 3D models |
Environment | Works indoors & in controlled conditions | Great for outdoor, large-scale projects |
Accuracy is crucial if your company is in the manufacturing, aerospace, medical device, or automobile industries. 3D scanning consistently prevails in various sectors because it offers the accuracy required to:
Check for tolerancesAvoid scrap
Pass audits
Assure compliance and safety
Although photogrammetry is still useful, it is more useful for visualization than for verification.
Our goal at Innovative Measurement Solutions (IMS) is to assist manufacturers in achieving the dimensional accuracy that is essential to their success. Because our clients require more than just a 3D image, we rely on cutting-edge 3D scanning technology. They require reliable data.
IMS makes sure manufacturers capture certainty rather than simply forms by integrating 3D scanning with CMM inspection and tolerance analysis.
While photogrammetry and 3D scanning both produce 3D models, only one is designed for high-precision production.
Use photogrammetry if you need to visualize a building.
3D scanning is the obvious option whether you need to confirm the accuracy of an EV battery, medical implant, or jet engine component.
Do you want to see how your inspection process can be transformed by 3D scanning? Let's discuss precision by getting in touch with IMS.