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.
$249.90*$294.00Save 15%
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Overview
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
Pros & Cons
👍 Pros
- At 7.4 ounces and 2.5 inches long, it virtually disappears on a Sony body — you can shoot all day without neck or wrist fatigue on a street photography walk.
- The f/1.8 aperture with 9 rounded blades delivers creamy bokeh that isolates subjects beautifully in environmental portraits and low-light travel scenes.
- Weather sealing at the mount and barrel means you can keep shooting through light rain and dusty market streets without packing the lens away.
- The stepping motor autofocus is near-silent, making it equally suited for discreet street photography stills and smooth, click-free video pulls.
- The Custom Switch provides instant physical control over focus ring behavior without menu navigation — a real workflow advantage when switching between creative modes on the move.
👎 Cons
- Minimum focusing distance of 11.4 inches limits close-up detail work — you'll need a dedicated macro lens or extension tube for tight product or food shots.
- At 35mm the focal length falls between wide-angle versatility and portrait-length compression, which may feel neither wide enough for architecture nor tight enough for headshots depending on your style.
- Third-party lens support for firmware updates and compatibility with future Sony bodies may lag behind native Sony lenses.
- The f/1.8 maximum aperture, while fast, is a stop slower than f/1.4 alternatives — a meaningful difference when shooting in very dim interiors or chasing razor-thin depth of field.
Frequently Asked Questions
How does the autofocus perform on Sony bodies compared to native Sony lenses?
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.
Does the Custom Switch replace the need for menu-diving to toggle between AF and MF?
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.
How does the weather sealing hold up in real conditions like rain or dusty environments?
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.
At 35mm f/1.8, how is the bokeh rendering for environmental portraits?
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.
What filter size does this lens take, and is the front element recessed?
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.
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