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Samyang AF 45mm f/1.8 FE Lens for Sony E

BH #SA4518FSE • MFR #SYIO45AFE
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Samyang AF 45mm f/1.8 FE Lens for Sony E
Key Features
  • E-Mount Lens/Full-Frame Format
  • Aperture Range: f/1.8 to f/22
  • One Extra-Low Dispersion Element
  • Two Aspherical Elements
A sleek and versatile prime, the Sony E-mount AF 45mm f/1.8 FE from Samyang is a normal-length prime characterized by its compact design and bright f/1.8 maximum aperture. The optical design incorporates a pair of aspherical elements and one extra-low dispersion element, which help to suppress spherical and chromatic aberrations for improved sharpness, color accuracy, and clarity. An Ultra Multi-Coating has also been applied to reduce flare and ghosting in order to achieve higher contrast when working in strong lighting conditions. Additionally, the lens's linear STM autofocus motor works in conjunction with Sony cameras' AF systems for quick, quiet, and precise focusing performance, and manual focus override is also available for more refined control.
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Samyang AF 45mm f/1.8 Overview

A sleek and versatile prime, the Sony E-mount AF 45mm f/1.8 FE from Samyang is a normal-length prime characterized by its compact design and bright f/1.8 maximum aperture. The optical design incorporates a pair of aspherical elements and one extra-low dispersion element, which help to suppress spherical and chromatic aberrations for improved sharpness, color accuracy, and clarity. An Ultra Multi-Coating has also been applied to reduce flare and ghosting in order to achieve higher contrast when working in strong lighting conditions. Additionally, the lens's linear STM autofocus motor works in conjunction with Sony cameras' AF systems for quick, quiet, and precise focusing performance, and manual focus override is also available for more refined control.

Compact normal-length prime is designed for full-frame Sony E-mount mirrorless cameras, however can also be used with APS-C models where it provides a 67.5mm equivalent focal length.
Bright f/1.8 maximum aperture suits working in difficult lighting conditions and also offers increased control over depth of field for isolating subjects and working with selective focus.
One extra-low dispersion element reduces color fringing and chromatic aberrations in order to produce greater clarity and color rendering.
Two aspherical elements control spherical aberrations and distortions for improved sharpness and resolution.
An Ultra Multi-Coating has been applied to individual elements in order to reduce flare and ghosting for increased contrast and a neutral color balance.
The integrated linear STM autofocus motor works in conjunction with Sony cameras' focusing systems for quick, quiet, and precise AF control. Manual focus override is also available for refining your focus position.
Internal focusing design maintains the overall lens length and prevents the front of the lens from rotating during use.
Rounded nine-blade diaphragm contributes to a smooth and pleasing bokeh quality.
UPC: 084438766202

Samyang AF 45mm f/1.8 Specs

Color
Black
Focal Length
45mm
Aperture
Maximum: f/1.8
Minimum: f/22
Lens Mount
Sony E
Lens Format Coverage
Full-Frame
Angle of View
52.31°
Minimum Focus Distance
1.48' / 45 cm
Magnification
1:8 Macro Reproduction Ratio
0.12x Magnification
Optical Design
7 Elements in 6 Groups
Aperture/Iris Blades
9, Rounded
Focus Type
Autofocus
Image Stabilization
No
Filter Size
49 mm (Front)
Dimensions
ø: 2.43 x L: 2.21" / ø: 61.8 x L: 56.1 mm
Weight
5.71 oz / 162 g
Packaging Info
Package Weight
0.72 lb
Box Dimensions (LxWxH)
4.9 x 4.8 x 4.7"

Samyang AF 45mm f/1.8 Reviews

i hope you like chromatic aberration

By Noah
Rated 4 out of 5
Date: 2025-03-04

im gonna go over most things about this lens so its gonna be long review. reviewed on a7riii with in camera corrections on build quality is alright. its all plastics but they feel nice and the focus ring moves smooth and a little grainy but in a subtle chill way. overall great for the price bokeh seems nice. it goes from a soft circle in the center to more of a cat's eye in the edges which can accumulate making a subtle swirling or circling bokeh around a subject which can look incredible and never seems to look bad in my opinion. an issue ill talk about in minute here is super prevalent on loads of bokeh, everywhere. chromatic aberration. especially if you zoom in youll find some very green and purple bokeh bubbles. not very pretty sharpness wide open at f1.8 is actually great. like a 8 or 9 out of 10, slightly improves at f2.8 but when you stop down to f5.6 everything becomes perfectly clear and contrasty. this is all recorded on a 42mp sensor so if you have a full frame camera with 24mp youll rarely notice the sharpness issues wide open even at f1.8. again great results for a lens like this lens flare resistance is incredible. i rarely notice them and when i do they look alright. i dont even shoot with the included lens hood because of how rarely i have flare problems. one issue is shooting head on to the sun reduces the contrast in your scene most of the time. chromatic aberration is probably the biggest issue with this lens. looking at the raw files zoomed in anywhere is just chroma hell on all edges in the frame. there's so much of it that i cannot remove it completely even using a manually calibrated lens profile in lightroom. this brings me to the next point, the in camera corrections on this lens for my a7riii are buns. all it really does is fix vignette and distortion. even lightroom's profile is no better. because of that i can somewhat safely say the in body lens corrections for your camera will probably not fix all the chroma autofocus seems fast. this is the first lens ive had with this camera so i cant say this with 100% certainty but i think the autofocus is a little slow to moving objects, specifically closer ones. again that might be the camera or my inexperience but i figured i should say something about it. you can change autofocus modes and settings for the lens via the samyang lens dock which i have now ordered no sample photos because i need to export them again in a lower rez and i dont want to all in all this is great. i was critical on this lens how i would be on a 10k lens so obviously it wont be perfect but man do i love it. i actually love this lens so much that the second lens i bought for this camera is from the samyang tiny series as well! the 75mm f1.8 which ive heard is even better. once i get enough time to give a review on it ill hop right back on here to do so

Great Lens For The Size, Weight & Price

By Bilbo
Rated 5 out of 5
Date: 2024-06-05

This is one of the lightest lenses on the Sony Full frame system. It feels a bit plastic and may not be a G Master but it's a really versatile focal length, has a large maximum aperture and is a great option for travel, street, portraiture or if you have a smaller body like the Sony A7C. Sharing some of the shots I took in. Penang, Malaysia.

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How do you compare this 35mm f/1.8 version of ...

How do you compare this 35mm f/1.8 version of this lens?
Asked by: Soner
The Samyang AF 45mm f/1.8 FE Lens for Sony E will produce the same image quality and has the same focus speed as the Samyang AF 35mm f/1.8 FE Lens for Sony E.
Answered by: Lawrence C
Date published: 2024-03-28

Has anyone purchased this lens recently (Oct ...

Has anyone purchased this lens recently (Oct 2021)? What firmware does it come with now?
Asked by: Joon
I've recently checked one and it's version 1. I would just update it if you decide to buy this lens.
Answered by: Stephen M
Date published: 2022-10-11

What version of the firmware does this come with ...

What version of the firmware does this come with in 2021?
Asked by: Joshua
I just received my lens (July 22, 2022) and it still has version 2 software on it. Version 2 was released on July 8, 2019 (more than 3 years ago). The curent version is version 6, which was released Sept 29, 2021. Either B&H is elling 3-year-old inventory or Samsung is trying to get us all to buy their Lens Station. Disappointed.
Answered by: Lars
Date published: 2022-10-22

Does this lens allow manual focus as well?

Does this lens allow manual focus as well?
Asked by: Lisa
Yes. The lens offers manual focus override.
Answered by: hectorm
Date published: 2021-12-27

Is this new or refurbished?

Is this new or refurbished?
Asked by: Precious
This is a brand new lens from Samyang.
Answered by: Rob
Date published: 2020-09-17

What is the outer diameter?

What is the outer diameter?
Asked by: John
The outer diameter is 62mm.
Answered by: Rob
Date published: 2020-10-13

Is this lens weather sealed?

Is this lens weather sealed?
Asked by: Jason
No, this lens does not have weather sealing.
Answered by: Rob
Date published: 2020-07-22

Does this include a lens hood?

Does this include a lens hood?
Asked by: Jon
Yes, this lens comes with a lens hood.
Answered by: Rob
Date published: 2020-08-10
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