Camera lenses are circular in shape. This fact has a lot of reasons behind it. Had the camera lenses been of any other shape such as square, triangular or rectangular, there would be an altogether different perspective to photography. There are a number of scientific reasons behind the circular shape of camera lenses. It has been widely observed that in optics, circular or spherical shapes work well, in comparison to others.
The reasons for such a shape of the lenses vary from manufacturing to lens rotation to a wider perspective. WittyFeed has tried to search for an answer to this question. Read on to find out the explanations. So, no need to bother your shutterbugs as your curiosity has been answered here.
Circular lenses are easier to manufacture.
Generally, it is easier to make circular camera lenses. They are cheaper to make and easier to calibrate when different lenses are combined to achieve a particular power and measure. Also to produce macro and telephoto lenses, circular is the preferred shape.
The parts of a camera such as diaphragm and aperture are conducive to circular lenses.
The opening of a diaphragm and the aperture give rise to a circular space, this is the reason a circular lens will produce the best results. The opening of a diaphragm is in a spiral shape, which looks like a circle.
Wider perspective is achieved through circular lens
A circular lens has the ability to rotate without occupying any extra space. Spherical lenses provide better and wider perspective for the wide angle lenses. They are easier to adjust.
Circular lenses are easiest to rotate for zoom and focus.