Yongnuo 50mm F/1.8 EF

Standard prime lens • Digital era

Announced:
· December 2014
Production status:
● In production
Country of design:
· PRC (People's Republic of China)
Original name:
· YONGNUO LENS EF 50mm 1:1.8
· YONGNUO YN50mm F1.8
Class:
· Fast full-frame standard prime lens

Model history (2)

■Yongnuo 50mm F/1.8 EF		A	6 - 5	0.45m	⌀52	2014 ●
■Yongnuo 50mm F/1.8 EF II		A	6 - 5	0.35m	⌀58	2018 ●

Specification

Optical design:
Maximum format:	35mm full frame
Focal length:	50mm
Speed:	F/1.8
Lens construction:	6 elements in 5 groups (Double Gauss derivative)
Mount and Flange focal distance:	Canon EF [44mm]
Diagonal angle of view:	46.8° (35mm full frame)
On Canon EOS APS-C [1.59x] cameras:
35mm equivalent focal length:	79.5mm (in terms of field of view)
35mm equivalent speed:	F/2.9 (in terms of depth of field)
Diagonal angle of view:	30.4°
Diaphragm mechanism:
Diaphragm type:	Automatic
Aperture control:	None; the aperture is controlled from the camera
Number of blades:	7 (seven)
Focusing:
Closest focusing distance:	0.45m
Magnification ratio:	1:6.67
Focusing modes:	Autofocus (AF), Manual focus (MF)
Autofocus motor:	Micromotor
Manual focus control:	Focusing ring
Focus mode selector:	AF - MF
Manual focus override in autofocus mode:	-
Optical Image Stabilizer (OIS):
Built-in OIS:	-
Physical characteristics:
Weight:	120g
Maximum diameter x Length:	⌀73×55mm
Weather sealing:	-
Fluorine coating:	-
Accessories:
Filters:	Screw-type 52mm
Lens hood:	Not available
Teleconverters:	Not available

Source of data

Manufacturer's technical data.

From the editor

A Chinese clone of the Canon EF 50/1.8 II: same optical formula, same design of the lens barrel, but 10g lighter, 4mm longer, and 7 aperture blades instead of 5.

Lenses with similar focal length

■Canon EF mount (12)
Canon EF 50mm F/1.2L USM • ⌀72	Pro	2007 ●	compare	5	3
Advantages: 5 Disadvantages: 3 · Older model (2007) · Faster · Aspherical design · More diaphragm blades (8 vs 7) · Ring-type Ultrasonic Motor · Manual focus override in autofocus mode · Much heavier (580g vs 120g) · Larger (66mm vs 55mm) · Weather-sealed · Larger filter size (72mm vs 52mm) · Detachable lens hood HIDE
Canon EF 50mm F/1.4 USM • ⌀58	Pro	1993 ●	compare	3	2
Advantages: 3 Disadvantages: 2 · Older model (1993) · Slightly faster · Not optimized for digital cameras · More diaphragm blades (8 vs 7) · Micro Ultrasonic Motor · Manual focus override in autofocus mode · Much heavier (290g vs 120g) · Larger filter size (58mm vs 52mm) · Detachable lens hood HIDE
Canon EF 50mm F/1.8 II • ⌀52		1990 ●	compare	1	2
Advantages: 1 Disadvantages: 2 · Older model (1990) · Discontinued · Not optimized for digital cameras · Less diaphragm blades (5 vs 7) · Detachable lens hood HIDE
Canon EF 50mm F/1L USM • ⌀72	Pro	1987 ●	compare	6	6
Advantages: 6 Disadvantages: 6 · Older model (1987) · Discontinued · Faster · Not optimized for digital cameras · More complex optical design · Aspherical design · Floating element system · More diaphragm blades (8 vs 7) · Larger closest focusing distance (0.60m vs 0.45m) · Slightly smaller magnification (1:9.1 vs 1:6.67) · Ring-type Ultrasonic Motor · Manual focus override in autofocus mode · Focusing distance range limiter · Much heavier (985g vs 120g) · Much larger (81.5mm vs 55mm) · Larger filter size (72mm vs 52mm) · Detachable lens hood HIDE
Canon EF 50mm F/1.8 • ⌀52		1987 ●	compare	2	3
Advantages: 2 Disadvantages: 3 · Older model (1987) · Discontinued · Not optimized for digital cameras · Less diaphragm blades (5 vs 7) · Arc-Form Drive instead of Micromotor · Much heavier (190g vs 120g) · Smaller (42.5mm vs 55mm) · Detachable lens hood HIDE
Canon EF 50mm F/1.8 STM • ⌀49		2015 ●	compare	4	1
Advantages: 4 Disadvantages: 1 · Slightly smaller closest focusing distance (0.35m vs 0.45m) · Slightly larger magnification (1:4.76 vs 1:6.67) · Stepping motor · Manual focus override in autofocus mode · Heavier (159g vs 120g) · Smaller (39.3mm vs 55mm) · Smaller filter size (49mm vs 52mm) · Detachable lens hood HIDE
Sigma 50mm F/1.4 EX DG HSM • ⌀77	Pro	2008 ●	compare	3	4
Advantages: 3 Disadvantages: 4 · Older model (2008) · Discontinued · Slightly faster · Aspherical design · More diaphragm blades (9 vs 7) · Slightly smaller magnification (1:7.4 vs 1:6.67) · Hyper Sonic Motor · Manual focus override in autofocus mode · Much heavier (505g vs 120g) · Larger (68.2mm vs 55mm) · Larger filter size (77mm vs 52mm) · Detachable lens hood NOTE: Approximate weight and length were used for comparison purposes. HIDE
Sigma 50mm F/1.4 DG HSM \| A • ⌀77	Pro	2014 ●	compare	4	3
Advantages: 4 Disadvantages: 3 · Slightly faster · More complex optical design · Aspherical design · Floating element system · More diaphragm blades (9 vs 7) · Slightly smaller closest focusing distance (0.40m vs 0.45m) · Slightly larger magnification (1:5.6 vs 1:6.67) · Hyper Sonic Motor · Manual focus override in autofocus mode · Much heavier (815g vs 120g) · Much larger (99.9mm vs 55mm) · Larger filter size (77mm vs 52mm) · Detachable lens hood NOTE: Approximate weight and length were used for comparison purposes. HIDE
Tamron SP 45mm F/1.8 Di [VC] USD F013 • ⌀67		2015 ●	compare	7	4
Advantages: 7 Disadvantages: 4 · Discontinued · Wider angle of view · Aspherical design · Floating element system · More diaphragm blades (9 vs 7) · Smaller closest focusing distance (0.29m vs 0.45m) · Larger magnification (1:3.4 vs 1:6.67) · Ultrasonic Silent Drive · Manual focus override in autofocus mode · Has image stabilizer · Much heavier (540g vs 120g) · Much larger (91.7mm vs 55mm) · Weather-sealed · Fluorine coating · Larger filter size (67mm vs 52mm) · Detachable lens hood HIDE
Tokina opera 50mm F/1.4 FF • ⌀72	Pro	2018 ●	compare	4	3
Advantages: 4 Disadvantages: 3 · Newer model (2018) · Slightly faster · More complex optical design · Aspherical design · More diaphragm blades (9 vs 7) · Slightly smaller closest focusing distance (0.40m vs 0.45m) · Slightly larger magnification (1:5.56 vs 1:6.67) · Ring-type Ultrasonic Motor · Manual focus override in autofocus mode · Much heavier (950g vs 120g) · Much larger (107.5mm vs 55mm) · Weather-sealed · Larger filter size (72mm vs 52mm) · Detachable lens hood NOTE: Approximate weight and length were used for comparison purposes. HIDE
Yongnuo 50mm F/1.4 EF / F • ⌀58	Pro	2018 ●	compare	1	3
Advantages: 1 Disadvantages: 3 · Newer model (2018) · Discontinued · Slightly faster · Much heavier (572g vs 120g) · Much larger (93mm vs 55mm) · Larger filter size (58mm vs 52mm) · Detachable lens hood HIDE
Yongnuo 50mm F/1.8 EF II • ⌀58		2018 ●	compare	0	1
Advantages: 0 Disadvantages: 1 · Slightly smaller closest focusing distance (0.35m vs 0.45m) · Slightly larger magnification (1:4.76 vs 1:6.67) · Heavier (162g vs 120g) · Larger filter size (58mm vs 52mm) HIDE

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