differences

Reasons to consider the Canon EF 50mm f/1.8 STM

Wider aperture f/1.8 vs f/2.8
Help
At its widest, the EF 50mm f/1.8 STM captures much more light (1.3 f-stops)
Canon EF 50mm f/1.8 STM Learn more about
the Canon EF 50mm f/1.8 STM

Reasons to consider the Canon EF 40mm f/2.8 STM

Slightly shorter 23 mm vs 41 mm
Help
More than 40% shorter
Slightly better wide angle 40 mm vs 50 mm
Help
20% better wide angle
Canon EF 40mm f/2.8 STM Learn more about
the Canon EF 40mm f/2.8 STM

similarities

Compared to digital camera lenses

Common Strengths Common Weaknesses
Length Short Help
EF 50mm f/1.8 STM41 mm
EF 40mm f/2.8 STM23 mm
Prime lens Fixed focal length prime lenses Help
Typically very sharp
Auto focus Auto focus Help
Easier to use
Lowest price Inexpensive Help
EF 50mm f/1.8 STM$118.82
EF 40mm f/2.8 STM$137.00
Weight Light weight Help
EF 50mm f/1.8 STM162 g
EF 40mm f/2.8 STM130 g

LensHero is not aware of any interesting weaknesses shared by these two products.

competitors

Canon EF 50mm f/1.8 STM Competitors

Canon EF 50mm f/1.4 USM

Canon EF 50mm f/1.4 USM

Low light lens

$298 - $329

Aperture Wider aperture
Diameter Slightly larger diameter
Canon EF 50mm f/1.8 II

Canon EF 50mm f/1.8 II

Low light lens

$60

Canon EF-S 24mm f/2.8 STM

Canon EF-S 24mm f/2.8 STM

Lens

$129 - $156

Min focal length Slightly better wide angle
Length Slightly shorter
Aperture Narrower aperture

Canon EF 40mm f/2.8 STM Competitors

Canon EF 28mm f/1.8 USM

Canon EF 28mm f/1.8 USM

Low light lens

$509

Aperture Wider aperture
Min focal length Slightly better wide angle
Length Longer
Canon EF-M 22mm f/2 STM

Canon EF-M 22mm f/2 STM

Low light lens

$249

Aperture Wider aperture
Diameter Smaller diameter
Max focal length Slightly worse telephoto
Canon EF-S 24mm f/2.8 STM

Canon EF-S 24mm f/2.8 STM

Lens

$129 - $156

Min focal length Slightly better wide angle
Magnification Slightly more magnification
Max focal length Slightly worse telephoto

discussion Which do you think is better?

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