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Sony Alpha a6400 compact mirrorless camera black with 16-50mm and 55-210mm lenses 32GB
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Canon
Canon 0573C002 EF 16-35mm f/2.8L III USM camera lens
Ultra-wide zoom with constant f/2.8 aperture, 16 elements in 11 groups, fluorine and water-resistant construction
- Part0573C002
- TypeUltra Wide Angle Zoom
- ColorBlack
- Diameter88.5 mm
- Focus TypeAF with full-time manual
- Focal Length16 - 35 mm
- Constant f/2.8 aperture maintains exposure across 16–35 mm zoom
- 16 elements in 11 groups with three aspherical and two UD lenses sharpen corners
- Subwavelength and Air Sphere coatings cut flare and ghosting in backlit scenes
- Ring-type USM delivers fast AF with full-time manual focus override
- Dust- and water-resistant build plus fluorine coating protects front and rear elements
Wide-angle zoom for full-frame EF
The Canon EF 16-35mm f/2.8L III USM is a professional L-series ultra-wide zoom with a constant f/2.8 aperture. It covers focal lengths from 16 to 35 mm and delivers a diagonal angle of view up to 108 degrees. The lens uses 16 elements in 11 groups including three aspherical and two UD elements. A ring-type ultrasonic motor provides fast autofocus with full-time manual override.
Upgrading from variable-aperture zooms
This lens replaces slower ultra-wide zooms that lose aperture at longer focal lengths. The constant f/2.8 maximum aperture is worth the jump for interior, event and landscape work where lighting cannot be controlled. Subwavelength and Air Sphere coatings reduce flare and ghosting more effectively than older designs. Fluorine coating on exposed elements eases cleaning in harsh environments.
Suits professionals needing weather-sealed f/2.8
Photographers who require dust- and water-resistant construction with internal focus will benefit from this build. The 82 mm filter thread and 88.5 mm diameter accept standard professional filters. Buyers needing a lighter walk-around lens or a wider maximum aperture than f/2.8 should look at alternative options. APS-C shooters seeking equivalent wide coverage may prefer a dedicated crop-sensor zoom.
Highlights
- Constant f/2.8 aperture maintains exposure across 16–35 mm zoom
- 16 elements in 11 groups with three aspherical and two UD lenses sharpen corners
- Subwavelength and Air Sphere coatings cut flare and ghosting in backlit scenes
- Ring-type USM delivers fast AF with full-time manual focus override
- Dust- and water-resistant build plus fluorine coating protects front and rear elements
Specifications
| Brand | Canon |
|---|---|
| Model | EF |
| Part | 0573C002 |
| Type | Ultra Wide Angle Zoom |
| Color | Black |
| Diameter | 88.5 mm |
| Focus Type | AF with full-time manual |
| Focal Length | 16 - 35 mm |
| Aperture | Maximum: f/2.8 Minimum: f/22 |
| Angle of View | 108 degree 10' |
| Minimum Focus Distance | 0.92 Feet |
| Lens Construction | 16 elements in 11 groups |
| Filter thread (Diameter) | 82 mm |
| Specifications | Specifications Focal Length & Maximum Aperture: 16–35mm f/2.8 Lens Construction: 16 elements in 11 groups Diagonal Angle of View: 108°10'–63° Focus Adjustment: AF with full–time manual Closest Focusing Distance: 0.92 ft./0.28m Filter Size: 3.2 in. / 82mm diameter Color: Black Dimensions Width: 5.0" Height: 3.5" Depth: 3.5" Weight: 1.75 lbs (790g) |
| Features | High performance L-series ultra-wide-angle zoom lens with constant f/2.8 maximum aperture. All-new optical design for significant improvements in outer and corner sharpness. Subwavelength Coating (SWC) and Air Sphere Coating (ASC) help to significantly reduce flare and ghosting. Highly resistant to dust and water intrusion, enabling shooting even in harsh conditions*. Circular aperture (9 blades) helps deliver beautiful, soft backgrounds. Inner focusing ring USM, a high-speed CPU and optimized AF algorithms for fast and accurate autofocusing. Full-time manual focus allows manual focu |
| Dimensions | 3.50" x 3.50" x 5.00" |
| Weight | 1.74 lbs. |
| Shipping weight | 0.91 kg |
| Package size | 235 × 136 × 136 mm |
Questions about this item
What filter thread size does the 88.5 mm diameter lens accept?
The lens has an 82 mm filter thread for attaching circular filters directly to the front element.
How is the ring-type ultrasonic motor engaged for autofocus, and what step is often missed?
Set the focus mode switch to AF; the ring-type ultrasonic motor then drives internal focusing, and full-time manual override is available by turning the focus ring without changing the switch.
When should the fluorine coating on the exposed front and rear elements be cleaned?
Clean the fluorine-coated surfaces only when visible smudges or dust affect image quality, using a blower first and then a lens cloth with approved cleaning fluid.
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