With a lens suitable for the respective image evaluation task, the size of the image field is determined for the camera image for the required operating distance.

High light intensity and the geometry of the image are of great importance for all image evaluations (code reading, shape recognition and position finding). High light intensity permits short exposure times with reduced motion blur and range maximization.

C-mount lenses with fixed focal length and a settable aperture and focus are ideal for this purpose and are therefore preferred. The selection of the right lens is a central point for every application with a reader. The relationship between the application values (e.g. operating distance) and the parameters of the camera can be found in the section "Image types".

"E-focus lenses", which are equipped with industrial-grade "Electronic Focus", are new in the portfolio. Using these lenses, the reader can change the focal point without human assistance. "Automatic focusing" is important for applications during commissioning of the reader or when a quick change of focus (<= 200 ms) is needed due to changing production conditions. The use of an E-focus lens is therefore also a sensible investment in terms of investment security for a plant. The flexible optics enables operation with changing or new products that have different operating distances.

The "MV560 lenses" are a further innovation in the lens portfolio. These lenses are specially designed for the new SIMATIC MV560 X readers with a very large 5.3 MP image sensor and for short focal lengths

Parameter Name	Parameter Value