Product Comparison: Samyang AF 45mm F1.8 FE vs Sony FE 50mm F1.8

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General Specifications
AF 45mm F1.8 FE
FE 50mm F1.8
About the Product
With less distortion than 35mm lenses and a wider angle than 50mm, the AF 45mm F1.8 FE opens up a range of photographic styles and themes. This lens will deliver the high contrast and dimensionality typical of specialised lenses while retaining spectacular resolution thanks to an outstanding optical design.
A large-aperture 50mm prime lens is a must-have for serious full-frame camera users. The optical design is state-of-the-art for high image quality, and the large F1.8 maximum aperture can produce gorgeous background bokeh. On APS-C format E-mount bodies it provides equally high quality.
Key Specs
Mount Type
Sony E
Sony E
Maximum Aperture
1.8 /f
1.8 /f
Minimum Focal Length
45 millimeters
50 millimeters
Maximum Focal Length
45 millimeters
50 millimeters
Lens Type
What customers say about "Key Specs"
Samyang AF 45mm F1.8 FE Camera Lens
  • Small and nice aperture.
  • The sharpness is excellent, even at full opening.
  • Good sharpness in large openings.
  • Focal very versatile. Great lens.
  • This lens is compact and light, with a useful focal length.
Sony FE 50mm F1.8 Camera Lens
  • Wide aperture for a good shallow depth at F/1.8.
  • It's a bright lens at F1.8.
  • The aperture variability is really great on this lens; ranging from f/1.8 - f/22.
  • The aperture allows good night shooting.
  • The color, bokeh and sharpness are really good, and 50mm is my favorite focal length for both photos and videos.
Size & Weight
2.4 in.
2.7 in.
2.4 in.
2.7 in.
2.2 in.
2.33 in.
5.7 oz.
6.6 oz.
What customers say about "Size & Weight"
Samyang AF 45mm F1.8 FE Camera Lens
  • Lightweight and decent build quality.
  • Very light, easy to carry.
  • The lens is a good weight and well built.
  • This is an amazing little walk-around lens, light weight, really sharp at all apertures.
  • Lightweight, compact and sharp for the size.
Sony FE 50mm F1.8 Camera Lens
  • It's lightweight and pretty compact considering f1.8 aperture.
  • It's light and compact.
  • It is super lightweight and very compact on my Sony a7rii.
  • Amazing lens, very compact.
  • Great lens for the price, small and compact.
Minimum Focus Distance
17.7 in.
17.7 in.
Field Of View
FX 52.31° / DX 35.31°
FX 47° / DX 32°
Zoom Type
Auto Focus, Manual Focus
Auto Focus, Manual Focus
Optical Stabilization
What customers say about "Imaging"
Samyang AF 45mm F1.8 FE Camera Lens
  • The autofocus operation is very quiet and accurate.
  • The autofocus is accurate and fast enough.
  • Image quality is fine, focus fast.
  • The manual focus ring has a very nice resistance.
  • Focus speed is entirely acceptable and it's quiet while focussing.
Sony FE 50mm F1.8 Camera Lens
  • Great in low light, quick autofocus and sharp images.
  • Manual focus is nice and smooth.
  • Super sharp with my A7R4, fast and accurate with the autofocus.
  • Works fine with my A7II. Fairly accurate autofocus.
  • The autofocus mechanism is loud.
Brand Compatibility
Sensor Type Compatibility
FX Format / DX Format
FX Format / DX Format
Lens Groups and Elements
7 Elements in 6 Groups
6 Elements in 5 Groups
Number of Aperture Blades
Filter Diameter
49 millimeters
49 millimeters
Aspherical Lens, ED (Extra-Low Dispersion) Glass, Stepping motor (STM)
Circular aperture, Compact design, Aspherical Lens
What customers say about "Features"
Samyang AF 45mm F1.8 FE Camera Lens
  • The image quality is outstanding.
  • The construction is of a very good quality.
  • This lens is very good for the performance.
  • Solid build and design. Would highly recommend.
  • The lens is truly amazing. High quality build, extremely sharp.
Sony FE 50mm F1.8 Camera Lens
  • This is an absolutely fantastic lens for the price.
  • Versatile for portraits and street photography.
  • Image quality is good enough.
  • I love the build quality of this lens.
  • Well priced, good quality build.
Warranty / Certifications
Manufacturer Warranty
1 year(s)
1 year(s)
Other Information
249.99 $

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