|EF-S||Autofocus lens designed only for Canon APS-C digital SLR cameras.|
|STM||The lens is equipped with stepping motor to provide smooth, fast and virtually silent autofocus. Learn more|
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|Diagonal angle of view:||59.1° (Canon APS-C)
|Lens construction:||6 elements in 5 groups, including 1 ASPH|
|Closest focusing distance:||16 cm|
|Number of diaphragm blades:||7|
|Type of autofocus motor:||Stepping (Canon EF-S)
|Full-Time Manual Focus:||Yes|
|Maximum diameter x Length:||Ø68.2 x 22.8 mm|
|Materials:||Plastic barrel, metallic mount|
|Filter size:||52 mm|
Design and Features
A twin brother of Canon EF 40mm F/2.8 STM (2012) designed for Canon EOS APS-C DSLR cameras. Optically and mechanically the lens is almost identical to its full-frame counterpart.
The lens is very inexpensive and ideal for movie makers, documentary, action or travel photography. Being a versatile lens, it is also suitable for landscape and even portrait photography.
The lens barrel is compact, lightweight, made of plastic. The lens mount is metallic.
The focusing ring is not physically coupled with the focusing mechanism and works electronically (focus-by-wire) - turning of the ring actuates an electric motor that moves the focusing group of the lens to the proper position to achieve sharp focus.
The lens features AF/MF focus mode switch.
|AF||Autofocus mode with Full-Time Manual Focus.|
|MF||Manual focus mode.|
Full-Time Manual Focus with lenses equipped with stepping or linear motor is performed in the following way - half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the manual focusing ring.
The lens uses front filters with standard size of 52 mm which are easy to find. They are also inexpensive.
The filter thread does not rotate during focusing which allows convenient use of different types of filters (including but not limited to polarizing and gradient).
The dedicated lens hood ES-52 is too shallow to block a reasonable amount of stray light or to provide a decent protection from physical impact. It is not a part of the package though.
The lens is equipped with gear type stepping motor, the autofocus is quiet, smooth and fast, which is especially important during video recording. For more information on Canon’s stepping motor, refer to the article dedicated to Canon EF 40mm F/2.8 STM (2012).
Aspherical elements (ASPH, XA) minimize spherical aberration, astigmatism, coma and ensure excellent sharpness and contrast even at maximum aperture.
The lens is very sharp across the frame already wide open! The background blur is neutral at large apertures.
|Camera||Canon EOS 50D||Canon EOS 50D|
|Sensor size||22.3×14.9 mm||22.3×14.9 mm|
|Distortion||-0.89 %||-1.73 %|
|Vignetting at F/2.8||-1.92 EV||-1.56 EV|
Typical Application1) Full to mid-body portraits
|User Manual. English, Adobe PDF, 145 KB|
|Prime lenses for Canon EOS DSLR cameras|
Alternatives (AF, 21..27 mm)
|Canon EF 24mm F/1.4L II USM||2008||⊗|
|Canon EF 24mm F/1.4L USM||1997||⊗|
|Canon EF 24mm F/2.8||1988||⊗|
|Canon EF 24mm F/2.8 IS USM||2012||⊗|
|Sigma 24mm F/1.4 DG HSM | A||2015||⊗|
|Sigma 24mm F/1.8 EX DG Aspherical Macro||2000||⊗|