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What does lens 85 of Canon 85- 1.8 mean? What does lens 1.8 mean?
85mm f/ 1.8

85 is the focal length

1.8 is the maximum aperture value.

Canon EF 85mm f/ 1.8 parameters

main performance

Professional lens category 135mm Quan Huafu lens.

Lens type fixed focus

The purpose of the lens

Medium telephoto lens

Lens structure: 7 groups and 9 films.

Maximum aperture 1.8

Minimum aperture 22

No.8 aperture blade

The focal length range is 85 mm

Driving motor USM

Filter hole 58

Magnification 0. 13

The viewing angle range is 28 degrees and 30 minutes.

Hood ET-65II

Bayonet canon EF bayonet

Other parameters

Overall dimensions are 75×7 1.5.

Product weight 425

Product features The commonly used medium-distance telephoto end provides a clear image description and is easy to carry. The image is clear at any aperture, Ming Rui. This lens can produce an excellent blurred background effect. Because the front lens group will not rotate when focusing, the effect of special filter will not be imaged.