Canon 40mm f2.8 STM is a Fixed aperture Auto Focus (AF)
Standard Prime lens with 35mm FF max sensor coverage, and it is designed to be used with
EF Mount cameras.
What type of photography is the Canon 40mm f2.8 STM lens good for?
The type of photography that you are planning to use the Canon 40mm f2.8 STM is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Canon 40mm f2.8 STM is a member of Canon's EF STM Prime series of lenses. Below you can see the latest lenses in this series.
EF STM Prime Series Lenses in Canon EF Mount
Reasons to Buy Canon EF 40mm f2.8 STM Lens
Here we've included a summary of the advantages and disadvantages of the Canon EF 40mm f2.8 STM lens in a list form to help you determine whether it offers the features you need.
| Autofocus |
| Full-time Manual Focusing |
| Covers Full-Frame Sensor |
| Light weight at only 130g / 4.6 oz |
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| No Weather Sealing |
| Hood is not supplied |
Lens Mount
Canon 40mm f2.8 STM is compatible with cameras that have a Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
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Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Canon 40mm f2.8 STM has a maximum diameter of 68mm and total length of 22mm. It weighs 130g / 4.6 oz.
Canon 40mm f2.8 STM has a filter thread of 52mm. Below are links to the filters that we recommend you to consider for your Canon 40mm f2.8 STM:
Focal Range
Canon 40mm f2.8 STM has a fixed focal length of 40mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 64mm.
Optical Image Stabilization
Canon 40mm f2.8 STM doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Alternatively, you can check the Canon 35mm f2 IS USM in Canon EF mount that have similar focal range but features Optical Image Stabilization.
Lenses Similar to Canon 40mm f2.8 STM With Optical Image Stabilization
Maximum Magnification Ratio
Canon 40mm f2.8 STM has a Max Magnification Ratio of 0.18x and has a minimum focusing distance of 0.3m. 0.18x means that the max magnification ratio is very low and not suitable even for modest close-up shots.
Below are the 3 Standard Prime type Canon12 mount lens alternatives with highest max magnification ratios:
Aperture
Canon 40mm f2.8 STM has a max aperture of F2.8 and a minimum aperture of F22.0.
Optical Formula
Canon 40mm f2.8 STM's optical formula consists of 6 elements in 4 groups . Special elements used in this design is 1 aspherical element.
Lens Hood
Canon 40mm f2.8 STM doesn't come with a lens hood.
Body Colour
Canon 40mm f2.8 STM is available in Black color.
Popular Comparisons of Canon 40mm f2.8 STM
Here are the eight most popular comparisons of the Canon 40mm f2.8 STM amongst Camera Decision readers.
Top Alternatives of Canon 40mm f2.8 STM Lens
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