Rokinon

Rokinon IO3518-E AF 35mm F1.8 Full Frame Lens Sony E

7.4oz

A 7.4-ounce full-frame 35mm with weather sealing and silent autofocus for all-day street and travel shooting on Sony E-mount.

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Overview

The Rokinon AF 35mm f/1.8 is the kind of lens that redefines what you expect from a travel and street photography setup. Mounted on a Sony full-frame body, it transforms your camera into a compact, responsive system that captures sharp environmental portraits with beautiful background separation, moody low-light street scenes wide open at f/1.8, and expansive travel landscapes with corner-to-corner clarity when stopped down. The 10-element optical design — featuring two aspherical and two high-refractive-index elements — controls aberrations effectively, delivering images that hold up under critical inspection. The linear stepping motor drives autofocus quickly and silently, performing smoothly with Sony's phase and contrast detection systems for both photography and video work.

Build quality reflects serious intent at a travel-friendly weight. At 7.4 ounces and just 2.5 inches in length, this lens feels almost weightless on a Sony a7-series body, and the weather sealing at the mount and barrel gives you confidence to keep shooting in unpredictable conditions. The Custom Switch is a thoughtful addition that lets you toggle the focus ring between manual focus and aperture control without touching a menu — a feature working photographers will use constantly. The included petal hood, 58mm filter thread, and carrying pouch round out a package that delivers professional optical performance in a form factor built for photographers who spend their days on their feet, chasing light wherever it leads.

Key Features

ULTRA SHARP WITH FAST F1.8 APERTURE: Designed with 10 elements in 8 groups, including 2 aspherical and 2 high refractive index elements, it delivers edge-to-edge clarity, shallow depth of field, and beautiful bokeh for travel photography or portraits.

LIGHTWEIGHT FULL FRAME PERFORMANCE: This 35mm F1.8 lens offers a full-frame field of view with just 7.4oz of weight. Its compact 2.5" length makes it the ultimate travel lens for street, urban, or low-profile photography setups.

FAST & ACCURATE AUTOFOCUS: A linear stepping motor ensures quick, quiet, and precise autofocus. It's optimized for Sony’s phase and contrast detection AF systems, making it perfect for both photos and video.

CUSTOM SWITCH & WEATHER SEALING: Custom Switch allows the focus ring to control aperture or manual focus. Sealed against dust and moisture, this travel lens performs reliably even in unpredictable environments.

READY FOR ANY SHOT: Comes with removable petal lens hood, front and rear lens caps, pouch, and manual. Compatible with 58mm filters, this lens blends pro-level performance with compact convenience for travel photography.

Specifications

Brand
Rokinon
Model
IO3518-E
Mount
Sony E
Focal Length
35mm
Maximum Aperture
f/1.8
Minimum Aperture
f/22
Optical Construction
10 elements in 8 groups (2 Aspherical, 2 High Refractive Index)
Aperture Blades
9
Minimum Focusing Distance
11.4 inches (0.29m)
Filter Size
58mm
Focus Motor
Stepping Motor (STM)
Weather Sealing
Yes
Weight
7.4 oz
Length
2.5 inches
Includes
Petal lens hood, front and rear caps, pouch, manual

Frequently Asked Questions

The linear stepping motor is optimized for Sony's phase and contrast detection AF systems, so acquisition is fast and quiet. For stills and video alike, it tracks reliably — though native Sony G or GM lenses may edge it out in continuous tracking speed on fast-moving subjects.
Yes — the physical switch on the lens barrel lets you reassign the focus ring to control either manual focus or aperture on the fly. This is a genuine time-saver for street shooters who want instant tactile control without pulling up camera menus.
The lens is sealed against dust and moisture at the mount and barrel joints. It will handle light rain and dusty trails without issue, though it's not rated for sustained heavy downpours — pair it with a weather-sealed Sony body for best all-around protection.
The 9-blade aperture produces smooth, rounded bokeh that separates subjects cleanly from busy street or travel backgrounds. Wide open at f/1.8, you get enough subject isolation for compelling environmental portraits while retaining context in the scene.
It accepts standard 58mm filters. The included petal lens hood provides additional protection and flare control, but the front element position works well with standard-thickness filters and polarizers without vignetting.