Difference betweenAnti glare and antireflective laptop screen

In 2018, Canon unveiled the new RF lens mount. There were a number of different types of lens mount that came before it. What features did these lens mounts have, and how have Canon mounts evolved throughout the years? Watch this video to find out.

A spigot mount supporting TTL metering at maximum aperture and featured a predecessor of the automatic exposure (AE) mechanism.

Anti glare and anti reflectionfor glasses

The lens mount is an interface that allows a lens to be attached to an interchangeable lens camera. As of 2018, Canon has produced 8 mainstream lens mounts.However, a lens mount does not exist simply as a means of attaching a lens to the camera. It also facilitates communication between the camera and the lens, enabling both to perform a wide range of functions.Canon’s first mount was a standard-thread-type screw mount that supported the mechanisms found in rangefinder cameras. Subsequent mounts evolved with the times in order to meet users’ expectations, delivering such advancements as automatic aperture, auto-exposure and autofocus mechanisms.The newest mount, the RF mount, promises even better image quality and usability thanks to its large mount diameter, short back focus distance and enhanced lens-camera communication system. It is indeed a mount designed for the future.It can be said that the lens mount is the key to the future evolution of both lenses and cameras.

While AR provides relief from glare off the back of the lens, there are several ways to reduce or eliminate glare from passing through the lens. These include:

A common problem with prescription glasses and sunglasses is called back-glare. This is light that hits the back of the lenses and bounces into the eyes. The purpose of an anti-reflective (AR) coating is to reduce these reflections off the lenses. In bad cases, you can actually see the reflection of your eye in the lens. Similar to a scratch-resistant coating, AR is made of a very hard thin film that is layered on the lens. It is made of material that has an index of refraction that is somewhere between air and glass. This causes the intensity of the light reflected from the inner surface and the light reflected from the outer surface of the film to be nearly equal. When applied in a thickness of about a quarter of light's wavelength, the two reflections from each side of the film basically cancel each other out through destructive interference, minimizing the glare you see. AR coatings are also applied to the front of prescription eyewear and some sunglasses to eliminate the "hot spot" glare that reflects off the lens.