Canon EF 40mm f/2.8 STM Lens Specifications and Measurements

SpecificationsCanon EF 40mm f/2.8 STM Lens
  Canon EF 40mm f/2.8 STM Lens
Year Introduced2012
Mounts OnFull Frame, APS-C
Lenses / Groups6/4
Angle of View: Diagonal57° 30'
Angle of View: Horizontal49º
Angle of View: Vertical34º
Aperture Range - Wide / Long f/2.8-22
Number of Aperture Blades 7
Rounded Aperture? Y
Manufacturer Specification Weight 4.6 oz  (130g)
Actual Weight 4.4 oz  (125g)
Lens Hood Weight
Tripod Ring Weight
In-Use Weight 4.4 oz  (125g)
Manufacturer Spec Size (DxL) 2.69 x 0.9”  (68.2 x 22.8mm)
Measured Size (DxL) 2.76 x 1.19”  (70 x 30.1mm)
Max Diameter at Tripod Ring
Max Length at Full Extension 1.48”  (37.6mm)
Internal Zoom? / Extends with Zoom? /
Zoom Extension Length
Internal Focusing? / Extends with Focusing? N / Y
Focus Extension Length 0.31”  (7.9mm)
Lens Hood Size (DxL)
Lens Length with Hood (Min-Max) 1.19 - 1.48”  (30.1 - 37.6mm)
Size of Rings: Focus / Zoom 0.2”  (5.1mm)
Filter Size 52mm  UV ► CP ►
Front Element (Filter Mount) Rotates N
AF Motor Type STM
Full Time Manual Focus Y
Focus Ring Rotation 120°
Focus Limiter? / Focus Limiter Ranges N
Distance Scale? / Type N
Close Focus  
Specified Min Focus Distance 11.81”  (300mm)
Tested Min Focus Distance (Wide / Long) 11.3”  (287mm)
Maximum Magnification (MM) 0.18x
Magnification Range with 12mm Ext Tube 0.50-0.32x
Magnification Range with 25mm Ext Tube 0.88-0.70x
Tripod Ring Included? / Removable? N /
Zoom Ring Lock Switch?
Lens Hood Included / Model? N / ES-52 Buy ►
Weather Sealed? / Filter Required? N
Image Stabilization? / Stops? / Tripod Sensing? N
Extender Compatible? N
Case Included? / Type? N / LP811 Buy ►
47.25" x 31.5" Subject Framing Distance 40mm = 4.50'
1200mm x 800mm Subject Framing Distance 40mm = 1371mm
Review Canon EF 40mm f/2.8 STM Lens
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My Recommended Retailers

Where you buy your gear matters. You expect to get what you ordered and you want to pay a low price for it. The retailers I recommend below are the ones I trust for my own purchases. Get your Canon EF 40mm f/2.8 STM Lens now from:

B&H Photo
Beach Camera or
the Canon Store (new or refurbished)
eBay (Choose trustworthy sellers only)
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Rent the Canon EF 40mm f/2.8 STM Lens

Do you need/want the Canon EF 40mm f/2.8 STM Lens for only a short period of time? Or, would you feel more comfortable buying after having a hands-on trial period? Consider renting. Renting is fast and easy. The rental companies I recommend below are excellent to work with. Schedule your rental now:
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