# Polarising filter > A lens filter that cuts reflections and glare from non-metallic surfaces. Also known as: polarizing filter, polariser, cross-polarisation, cross-polarization. Category: Lighting and optics. A polarising filter on the lens blocks light polarised in one direction, reducing reflections and glare from non-metallic surfaces such as glass, plastic and varnish. In cross-polarisation, polarising film on the lights and a filter on the lens are combined to remove reflections almost completely. ## How PhotoRobot uses it PhotoRobot's Object Capture tutorial suggests a polarisation filter, and if needed cross-polarisation, to reduce reflections that disturb photogrammetry, and PhotoRobot-ready camera kits are delivered including polarisation. ## See on photorobot.com - [Object Capture: how to make a 3D model](https://www.photorobot.com/tutorials/object-capture-how-to-make-a-3d-model) ## Related terms - [Photogrammetry](https://www.photorobot.com/glossary/what-is-photogrammetry-in-product-imaging): Generating a 3D model from many overlapping photographs of an object. - [Reflector](https://www.photorobot.com/glossary/reflector): A surface that bounces light back onto the subject to fill shadows; also the dish fitted to a light. - [Flag](https://www.photorobot.com/glossary/flag): An opaque panel that blocks light from reaching part of the scene or the lens. ## Where this term appears on photorobot.com Mentioned on 3 pages. Most relevant: - [Recommended Cameras for PhotoRobot Systems](https://www.photorobot.com/manuals/recommended-cameras): Every recommended camera and lens choice is then delivered as part of a complete PhotoRobot-ready kit (with power cables, polarization, adapters, tested compatibility, and onboarding included). - [How to Make a Simple 3D Model with Apple Object Capture API](https://www.photorobot.com/tutorials/object-capture-how-to-make-a-3d-model): When this happens, it’s possible to reduce glare using a polarization filter on the camera. - [How to Photograph Eyewear for Online Product Presentation](https://www.photorobot.com/tutorials/how-to-photograph-eyewear): It might still be necessary to experiment with light reflectors for glasses with polarized or mirror lenses.