The distance from the center of the lens to the image focal point (=image sensor surface) is known as the focal length. It is expressed in millimeter (mm) units. A lens with a short focal length is a wide-angle lens and one with a long focal length is a telephoto lens.

A conversion lens is attached to a lens to enable it to take photos with a wider angle or stronger telephoto magnification.

With a zoom lens, when you turn on macro mode and move as close as possible while still keeping the subject in focus, the minimum distance to the subject and the size of the subject in the frame will differ depending on whether the lens is at a wide-angle or telephoto zoom position. With a wide-angle setting you may be too close and with a telephoto setting you may be too far away so adjust the focal length to find the one that makes it easiest to take the shots you want.

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Vision—AI or classical—and its integration in the industrial world is not always easy to understand. That’s why we propose a complete approach. We begin with a thorough analysis of the situation, environment and potential. With this information, we select the right cameras or other data acquisition devices, and the treatment processes.

We are industrial vision specialists with expertise in machine learning. We utilize both classical machine vision solutions and artificial intelligence (AI)-based vision approaches that are integrated within our predictive maintenance and quality offer.

Attaching a 0.75x wide conversion lens to a 28 mm lens gives an angle of view equivalent to a 21 mm ultra wide-angle lens.

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We offer Deep Learning vision solutions for situations where the amount of data available is too variable for traditional data processing methods. An example would be where there is a high variability of objects to be inspected, and where the environment is poorly controlled.

Even if the focal lengths of the lenses of two digital cameras are the same, the angle of view can vary depending on the size of the image sensor used in each. To make it easier to understand angle of view, focal length is often expressed as "__ mm equivalent," which means it has been converted to the 35 mm film camera format that has been historically the most common. Here on this site also, we state focal lengths that are converted into 35 mm film camera format.

Depth of field

Focallength

* The GXR interchangeable unit camera system has camera units with a fixed focal length lens and camera units with a zoom lens.

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This approach generally leads to a proof of concept from which we can validate the project’s technical feasibility as well as how the solution will perform in the field.

Focus distance

Utilizing AI, we aim to design models that generalize data and do not lead to overfitting. We set up mechanisms that enable our clients to update models with new images to limit the performance degradation over time.

Aperture

We recommend classical vision solutions for processes where data acquisition takes place in a controlled and repeatable environment. Image analysis should be performed on objects with low variability in shape and appearance.

Sometimes, equipment malfunctions and errors are so minute that they cannot be detected by the naked eye. Industrial vision enables us to identify those small faults by using images and video in conjunction with AI models. The resulting data is then quickly transcribed in a user-friendly graphical format by our CortX Alchemy platform. With widgets dedicated to video and image rendering, our dashboards can be built in only a few clicks, highlighting relevant data in the most dynamic fashion according to need.

This is a lens used for close-up photography. A macro lens can shoot from a distance closer to the subject than a regular lens. The GXR interchangeable unit camera system has a camera unit with a 50 mm macro lens. Link to more information on GXR camera unit

The angle indicating the width of the field included in the photo is called the "angle of view." A wide-angle lens has a wide angle of view and a telephoto lens has a narrow angle of view.

Attaching a 1.88x teleconversion lens to a 72 mm lens gives an angle of view equivalent to a 135 mm medium telephoto lens.

Our goal is to identify problems and then show them to facility operators in a straightforward manner. This enables us to ensure optimal quality monitoring while reinforcing our predictive models.