Canon EF 20mm f/2.8 USM vs Canon EF 28mm f/1.8 USM

Full Comparison

Image properties

Canon EF 20mm f/2.8 USMCanon EF 20mm f/2.8 USMCanon EF 28mm f/1.8 USMCanon EF 28mm f/1.8 USM
Max Format size
Full-frame (35mm)
Full-frame (35mm)
Focal length
, 20
, 28
Maximum magnification
0.14
0.18
Image stabilisation
nono
nono

Aperture

Canon EF 20mm f/2.8 USMCanon EF 20mm f/2.8 USMCanon EF 28mm f/1.8 USMCanon EF 28mm f/1.8 USM
Aperture max
2.8
1.8
Aperture min
22
22
Aperture ring
nono
nono
Number of diaphragm blades
5
7

Optics

Canon EF 20mm f/2.8 USMCanon EF 20mm f/2.8 USMCanon EF 28mm f/1.8 USMCanon EF 28mm f/1.8 USM
Construction
Fixed
Fixed
Elements
11
10
Groups
9
9

Focus

Canon EF 20mm f/2.8 USMCanon EF 20mm f/2.8 USMCanon EF 28mm f/1.8 USMCanon EF 28mm f/1.8 USM
Focus method
Internal, Rear
Internal, Rear
Autofocus
yesyes
yesyes
Autofocus motor type
Ultrasonic
Ultrasonic
Full-time Manual focusing
yesyes
yesyes
Closest focusing distance
9.84 in
9.84 in
Distance scale
yesyes
yesyes
Depth of field (DoF) scale
yesyes
yesyes

Dimensions

Canon EF 20mm f/2.8 USMCanon EF 20mm f/2.8 USMCanon EF 28mm f/1.8 USMCanon EF 28mm f/1.8 USM
Lens type
Normal, Wide angle
Normal, Wide angle
Lens mount
Canon EF
Canon EF
Body materials
Plastic, Metal
Plastic, Metal
Colour of product
Black
Black
Weight
0.89 lb
0.68 lb
Diameter
3.07 in
2.91 in
Length
2.80 in
2.20 in
Filter size
2.83 in
2.28 in
Sealing
nono
nono
Filter thread
yesyes
yesyes
Hood supplied
nono
nono
Tripod collar
nono
nono
Optional accessories
Hard Case LH-D13, Soft Case LP1214
Hard Case LHP-C10, Soft Case ES-C9/LP814

Often compared with EF 20mm f/2.8 USM

Often compared with EF 28mm f/1.8 USM