Camera anamorphic bokeh effect

The camera anamorphic bokeh effect refers to the special speckle effect generated when shooting with a camera, which is usually caused by a large aperture and shallow depth of field, resulting in a blurred and artistic bokeh effect of background light points. This effect is often used in photography to create a dreamy and hazy atmosphere.
Formation principle
The formation of bokeh effect mainly depends on the control of aperture size and depth of field. When the aperture is turned to its maximum (such as f/1.8 or f/2.8), the depth of field becomes very shallow, which causes the light sources in the background to form blurry spots outside the focal plane, resulting in a bokeh effect. In addition, the shape of the aperture blades of the lens can also affect the shape of the bokeh, with circular aperture blades typically producing a more rounded bokeh spot.
Shooting Techniques
Using a large aperture lens: A large aperture lens (such as f/1.8 or f/2.8) can produce a more pronounced bokeh effect. Fixed focus lenses are usually more suitable for shooting bokeh than zoom lenses because fixed focus lenses typically have a larger aperture.
Adjusting the focal length: Using a long focal length (such as 85mm or 70-200mm) can enhance the bokeh effect, as it reduces the background area and makes the bokeh more pronounced.
Control the distance between the subject and the background: The farther the distance between the subject and the background, the more pronounced the bokeh effect. Increasing the distance between the subject and background can achieve better bokeh effects.
Manual Focus: Manually adjusting the focus allows photographers to better control the focal position, resulting in a more ideal bokeh effect.
Using hollowed out cardboard: To obtain a specific shape of bokeh, a hollowed out cardboard can be added in front of the lens, so that the light spot will appear in the shape of the cardboard.
Actual application scenarios
The bokeh effect is commonly used for shooting night scenes, portraits, landscapes, and other scenes. In night scenes, the spot effect of lighting is particularly prominent, which can add a dreamy and artistic sense to photos. In portrait photography, shallow depth of field can make the subject clear while blurring the background, highlighting the theme. In landscape photography, bokeh effect can be used to enhance the layering and artistic effect of the image.