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Lens calculator - Calculating the object size / field of view (FOV)

The object size G is usually the object range to be detected which must be viewed by means of the camera.

G = B * (g / f'-1)
lens online calculation of object size (FOV - field of view) for cameras

Calculating the object size or FOV using entocentric standard lenses

Calculate the field of view given the working distance, sensor size and lens focal length.

Note: Even when using the drop-down lists own values can be entered. Please use the first entry "user def."!


Sensor size :
Focal length:
Working distance in mm:


Calculated object size (FOV):


Attention: Calculated object sizes of several millimetres can indeed be realised by means of entocentric lenses (incl. close-up rings), but often hardly useful. Normal objects with close-up rings in retro position provide an alternative for better image quality. In case of smallest image details and large magnifications please use macro-lenses which are specially designed for these applications.

Further details on optical calculations can be found in chapter Optical basics.

Calculating the object size using macro lenses and telecentric lenses

Also for macro lenses and telecentric lenses it is possible to calculate the field of view using the imaging scale and sensor size.

Object size G = sensor size B / imaging scale ß

Abbildungsmaßstab beta

Hinweis: Even when using the drop-down lists own values can be entered. Please use the first entry "user def."!


Sensor size:
Imaging scale of lens:


Calculated object size (FOV) in mm:


Note:

Further details on optical calculations can be found in chapter Optical basics.

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