Anamorphic lenses are designed to squeeze the image horizontally, resulting in a wider aspect ratio when projected onto a screen.

The 2.35:1 aspect ratio is commonly used in widescreen cinematography and is often referred to as the "anamorphic ratio".

Anamorphic lenses typically employ a cylindrical lens element, which stretches the image horizontally while leaving the vertical axis unaffected.

Anamorphic lenses allow filmmakers to capture a wider field of view without having to use a wider camera body or lens.

Anamorphic lenses are generally more expensive, heavier, and have reduced light transmission compared to standard spherical lenses.

Stanley Kubrick was one of the first filmmakers to extensively use anamorphic lenses, starting with his film "Paths of Glory" in 1957.

Lawrence of Arabia, released in 1962, is widely regarded as one of the most visually stunning films ever made, thanks in part to its extensive use of anamorphic lenses.

Squeeze lenses are used during filming to compress the image horizontally, while unsqueeze lenses are used during projection to expand the image back to its original aspect ratio.

The anamorphic flare effect is a distinctive horizontal streak of light that can occur when a bright light source is captured in a scene shot with an anamorphic lens.

Christopher Nolan is a prominent filmmaker who frequently employs anamorphic lenses in his films, including "The Dark Knight" trilogy, "Inception", and "Interstellar".

Anamorphic lenses commonly used in cinematography typically have a focal length range of 35mm to 85mm, providing filmmakers with a versatile range of focal lengths for various shots.

The effect of an anamorphic lens on the depth of field depends on factors such as the lens's focal length, aperture, and the distance to the subject. In general, anamorphic lenses can produce a shallower depth of field than spherical lenses at the same focal length and aperture.

Anamorphic lenses produce a distinctive bokeh effect, where out-of-focus highlights take on a horizontal oval shape. This effect is due to the cylindrical lens element in the anamorphic lens.

Cooke Optics, Panavision, Angénieux, and Zeiss are all renowned manufacturers of high-quality anamorphic cinema lenses.

The future of anamorphic lenses in filmmaking is difficult to predict. While digital technology has made it possible to achieve anamorphic effects in post-production, many filmmakers still prefer the unique look and feel of anamorphic lenses.