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Focal length [a] Aperture OIS Weight Length Release year Availability Wide Tele Wide Tele Sony 28-70mm F2 E: 28mm 70mm f / 2.0 f / 2.0 No 918g 140mm 2024 Current: Canon 28-70mm F2 RF: 28mm 70mm f / 2.0 f / 2.0 No 1430g 140mm 2018 Current: Canon 24-105mm F2.8 RF: 24mm 105mm f / 2.8 f / 2.8 Yes 1330g 199mm 2023 Current: Sony 24-70mm F2.8 II: E ...
[6] A wide-angle lens has a shorter focal length and includes more of the viewed scene than a normal lens; a telephoto lens has a longer focal length and captures a small portion of the scene, making it seem closer. Lenses are not labeled or sold according to their angle of view, but rather by their focal length, usually expressed in millimeters.
Focal length: 40 mm: Aperture (max/min) f / 2.8 ... video, general: Physical; Max. length: 0.9 inch / 22.8mm: ... The EF 40mm was the first EF lens equipped with a ...
The EF 28mm lenses are a group of prime lenses made by Canon that share the same focal length. These lenses use the EF type mount that fits the Canon EOS line of cameras. When used on a camera body with an APS-C sensor, such as the Canon EOS 700D , it provides a narrower field of view, equivalent to a 45 mm lens mounted on a 35 mm frame body.
The effective focal length is nearly equal to the stated focal length of the lens (F), except in macro photography where the lens-to-object distance is comparable to the focal length. In this case, the absolute transverse magnification factor ( m ) ( m = S 2 / S 1 {\displaystyle m=S_{2}/S_{1}} ) must be taken into account:
A normal lens typically has an angle of view that is close to one radian (~57.296˚) of the optical system's image circle. [citation needed] For 135 format (24 x 36 mm), with an escribed image circle diameter equal to the diagonal of the frame (43.266 mm), the focal length that has an angle of one radian of the inscribed circle is 39.6 mm; the focal length that has an angle of one radian of ...
For digital EOS cameras with APS-C sensors, the EF-S 18–55mm lens covers the same focal length range. This is due to crop factor. EF-S lenses only work with Canon 1.6x crop cameras, which results in an angle of view roughly equivalent to that of a 29–90mm lens on a 35mm camera. Like the 28–90mm, the 18–55mm is also a kit lens.
Normal lens: angle of view of the diagonal about 50° and a focal length approximately equal to the image diagonal. Wide-angle lens: angle of view wider than 60° and focal length shorter than normal. Long-focus lens: any lens with a focal length longer than the diagonal measure of the film or sensor. [10] Angle of view is narrower.