Samyang AF 45mm f/1.8 FE Lens for Sony E-Mount {49}

Model #385162
  • $256.00

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Samyang's compact 45mm f/1.8 built for Sony mirrorless shooters.

The 45mm focal length sits right at natural human perspective, and Samyang's AF 45mm f/1.8 FE leans into that with an optical formula built around real-world shooting. Two aspherical elements keep spherical aberration in check across the frame, while a single ED element handles chromatic fringing, the kind that shows up at f/1.8 along high-contrast edges. Ultra Multi-Coating cuts flare and ghosting when you're shooting into light, which matters at a focal length people actually use for available-light work.

The linear STM autofocus motor is the right choice for a lens like this. It's quick and quiet, which makes it usable for video without the motor chatter that plagues older designs. Manual focus override is available when you want it. The 49mm filter thread keeps your investment in filters modest. For what it is, a native Sony E-mount prime at f/1.8 in a compact body, the optical engineering is thoughtfully matched to how photographers actually shoot.

Who It's For

Street photographers get a focal length that reads naturally in the frame, a fast f/1.8 aperture for low-light work, and a small form factor that doesn't draw attention. Videographers working on Sony Alpha bodies will appreciate the quiet linear STM motor, which won't intrude on recorded audio during pulls. Portrait shooters who find 50mm slightly too tight and 35mm too wide will find 45mm hits an useful middle ground, with the ED element keeping color fringing off skin tones. Travel photographers prioritize pack size, and the compact build with a 49mm filter thread makes this easy to carry daily.

Key Features

  • 45mm focal length for natural human perspective shooting
  • f/1.8 maximum aperture for available-light work
  • Two aspherical elements to control spherical aberration
  • Single ED element for chromatic aberration control
  • Ultra Multi-Coating reduces flare and ghosting
  • Linear STM autofocus motor with manual override
  • 49mm filter thread
  • Sony E-mount compatibility

FAQ

What's the autofocus performance like on the Samyang 45mm f/1.8 FE?
The linear STM motor is quick and quiet, which makes it solid for both stills and video work without the motor noise you get from older AF designs. Manual focus override is available when you need it.
How does this lens handle chromatic aberration at f/1.8?
A single ED element is built into the optical formula specifically to control chromatic fringing - the color separation that typically shows up at wide apertures along high-contrast edges.
Is this lens good for available-light shooting?
Yes. The f/1.8 aperture and Ultra Multi-Coating work together to handle flare and ghosting when you're shooting into light, which matters for the kind of natural-light work where 45mm gets used.
What filter size does this lens use?
The filter thread is 49mm, which keeps your investment in filters modest if you're building a kit.
How compact is the AF 45mm f/1.8 compared to other 45mm primes?
Samyang designed this lens around a compact form factor - the two aspherical elements and ED element are arranged to keep the physical size down while maintaining optical performance at f/1.8.
Can I use this lens for video on Sony E-mount cameras?
Yes. The linear STM motor is quiet enough for video work, and manual focus override gives you control when you need it during recording.
SpecificationValue
Focal Length45mm
Max Aperturef/1.8
MountSony E
Filter Thread49mm

This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.

Brand Name Samyang
Filter Size 49mm
Focus Type Autofocus (lens motor)
Lens Mount Sony E Mount
Lens Type Standard / Normal
Max Focal Length 45mm
Min Focal Length 45mm

Learn what to expect from each condition, cosmetically. Images are representative of each grade and may not show the exact item you receive. All equipment is guaranteed to work as intended, unless otherwise noted. We also occasionally offer items that fall .

Exceptions


New
New in box complete with manufacturer's USA warranty. Not previously owned or used.
Like New
Essentially new with no signs of use. ā€œOpen box.ā€ In manufacturer's packaging with original accessories and instructions. 180-day warranty.
As Is
Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.

Like New Minus

Like New Minus
Like New Minus

Like New Minus

Barely used with virtually no traces of wear. Only the closest inspections will reveal slight use. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.

Excellent Plus

Excellent Plus
Excellent Plus

Excellent Plus

Lightly used with limited signs of wear. Exceptionally nice but may have slight wear on finish visible. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.

Excellent

Excellent
Excellent

Excellent

Noticeably used with average signs of wear. Shows moderate wear for the age of the item, with the possibility of blemishes and/or minimal dings. Lens glass may have average dust and zoom/focus ring tension may have slight looseness or tightness overall, but will not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.

Bargain

Bargain
Bargain

Bargain

Frequently used with above-average wear. May have dents, dings, or finish loss. Lens glass may have small scratches, dust, and blemishes, and zoom/focus ring tension may have moderate looseness or tightness overall, but should not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.

Ugly

Ugly
Ugly

Ugly

Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.

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