People often ask whether they need a laser scan or a photogrammetry capture, as though one is simply better than the other. The honest answer is that they are different tools that overlap in some places and pull apart in others. Choosing the right one saves money and produces a cleaner result, which is why we talk it through on every 3D scanning and photogrammetry job before any data is captured, rather than defaulting to whichever tool happens to be closest to hand.
The correct choice depends on the subject, the accuracy you need, the surface you are dealing with and the environment you are working in. None of those factors can be ignored, and getting them wrong wastes a capture session. Below we break down the practical trade offs in plain terms so the decision is clear, and so you can see why we sometimes recommend combining both methods on a single project.
Strengths of hardware scanning
Structured light and laser scanners deliver high, repeatable accuracy on small to medium objects, often down to a fraction of a millimetre. They are largely unaffected by the colour of the surface and cope well with plain, untextured areas that confuse photogrammetry, because they actively project their own pattern rather than relying on natural detail in the scene.
That precision makes them the natural choice for engineering parts, inspection and reverse engineering, where tight tolerances and clean geometry matter far more than appearance. When a part has to fit another part, or be certified against a drawing, a dedicated scanner is almost always the right tool, and the controlled conditions of our Perth workshop let it perform at its best.
Strengths of photogrammetry
Photogrammetry scales effortlessly in a way that handheld scanners cannot match. A camera or a drone can capture a whole building, a vehicle or an entire site quickly, and it records rich colour and texture along the way. The equipment is portable and low cost to deploy in the field, which is a real advantage when the subject cannot come to a workshop.
That makes it the better pick for architecture, terrain, large visual assets and anything where the sheer size of the subject rules out a contact scanner. It is also gentle, since nothing ever touches the object, which suits fragile or valuable items. The trade off is that featureless or shiny surfaces need extra care to capture reliably.
How we choose
Rather than reaching for a favourite tool, we weigh up a short list of practical factors before recommending a method, and on larger projects we often combine the two so each does what it does best. The questions below guide almost every decision we make, and answering them early keeps a job on time and on budget.
- The size of the subject and how close we can physically get to it.
- The accuracy required and whether dimensions must be certified.
- The surface finish, since shiny or featureless parts favour scanning.
- Whether colour and texture form part of the final deliverable.
Combining both on one project
On many jobs the smartest answer is not one method or the other but a careful blend of the two. We might laser scan the precise mating faces of a large casting where tolerance is critical, then photograph the broad, less critical surfaces to fill in shape and colour quickly. The two data sets are aligned in software afterwards so the strengths of each cover the weaknesses of the other, giving one model that is both accurate where it counts and complete everywhere else.
This hybrid approach is common on vehicles, machinery and heritage pieces, where some regions demand engineering accuracy and others only need to look right. Planning the split in advance keeps the capture day efficient and the file sizes sensible. When you contact us about a project, describing which areas truly need tight accuracy lets us decide where to spend the careful, slower scanning time and where faster photography will do the job just as well, which usually brings the overall cost down.