Wikipedia begins the explanation of the term ‚Lens‘ in two short sentences as follows: „...A lens is an optical gathering system that produces a realistic optical image of an object. It is the most important component of optical imaging devices, for example of cameras, binoculars, microscopes, projectors or astronomical telescopes". The decisive point in the explanation is the phrase „most important component" (thank you, Wikipedia). And it‘s therefore always amazing how little attention is given to the choice of the correct lens.
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