FREQUENTLY ASKED QUESTIONS ABOUT DOCUMENT CAMERAS

What should you look for when buying a document camera?

When comparing different document cameras, resolution should not be the only factor you consider. Several technical and practical features determine which model is best suited to your needs.

• Resolution: A high resolution makes it easier to display fine text, drawings and small details clearly. Models with 4K resolution can be particularly useful when content needs to be enlarged or displayed on large screens.
• Zoom: Zoom allows you to highlight specific areas of a document or small objects. If you regularly need to show fine details, it is worth paying particular attention to the camera's zoom capabilities.
• Autofocus: Good autofocus is useful when frequently switching between flat documents and objects of different heights.
• Capture area: The capture area determines how large a document or object can be displayed in full. This is particularly important when presenting full book pages or larger documents.
• Connectivity: Many compact document cameras connect to a computer via USB. Depending on the model, other visualisers offer additional connections for displays or projectors.
• Flexible camera arm: An adjustable arm allows the camera to capture content from different angles. This is particularly useful when presenting three-dimensional objects as well as documents.

Document camera or webcam – what's the difference?

A traditional webcam is primarily designed to capture people in front of the camera. A document camera, on the other hand, is designed to capture content on a work surface. Its flexible design allows the camera to be positioned above a document or object, making it much easier to present book pages, drawings, products and handwritten notes. Some models combine both functions and can be used as both a visualiser and a webcam. This can be particularly useful for online teaching, training and hybrid presentations.

What is the difference between a document camera and an overhead projector?

A document camera can perform many of the same tasks as a traditional overhead projector, but offers much greater versatility. Unlike an overhead projector, a document camera is not limited to transparent sheets and can be used to display standard documents, books, photographs and three-dimensional objects. You can also write directly on paper, move an object or demonstrate a process during a presentation. Viewers can follow everything in real time on the connected display or projector.

Do I always need a computer to use a document camera?

No. It depends on the model. Many USB document cameras require a computer for video output. Other visualisers feature additional video outputs and, depending on their connectivity, can be connected directly to a display or projector. Check the available connections before choosing your document camera.

Can I connect a document camera directly to a projector?

Yes, if the document camera has a suitable video output. USB-only document cameras, however, are normally connected to a computer, which then sends the image to the projector. The available connections on both the document camera and projector are therefore important when choosing a model.

Can I use a document camera to show three-dimensional objects?

Yes. This is one of the main advantages of a document camera compared with a traditional scanner. With a flexible visualiser, you can present not only paper documents but also products, components, models and other three-dimensional objects in real time.

Which document camera is suitable for teachers and schools?

For teaching and classroom use, a document camera should be easy to operate and offer a flexible camera arm and a sufficiently large capture area. If the document camera needs to be moved between classrooms, a compact design and low weight are also useful.

Can I use a document camera for online teaching and video conferencing?

Yes, provided the model supports use with a computer. A document camera can be used to share worksheets, handwritten explanations, products and other physical content with participants during online lessons, training sessions and video conferences.