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Canon
Canon 2578A002 EF 70-200mm f/4L USM Telephoto Zoom Lens White
An L-series telephoto zoom covering 70–200 mm at a constant f/4 aperture with ring USM autofocus and internal focusing
- PartSLR Lenses
- TypeTelephoto Zoom Lens
- ColorWhite
- Diameter67 mm
- CompatibilityCANON EF Mount Camera
- Focus TypeAuto Focus
- L-series optics deliver professional contrast with fluorite and UD elements
- Ring-type USM gives fast, quiet autofocus with full-time manual override
- Constant f/4 aperture maintains exposure through the 70–200mm zoom range
- Inner focusing keeps the front element stationary for polariser use
- Weather-sealed construction protects the lens in challenging conditions
L-series telephoto zoom for professionals
The Canon EF 70-200mm f/4L USM is a high-performance lens aimed at professionals and enthusiasts. Its optical construction uses one fluorite element and two UD elements to deliver outstanding contrast and minimised aberrations. A ring-type ultrasonic motor provides fast, quiet autofocus with full-time manual override. The lens maintains a constant f/4 maximum aperture throughout the zoom range.
EF mount limits use to compatible bodies
This lens fits only cameras with a Canon EF mount. The rotating zoom system and inner focusing mechanism keep the front element stationary during focusing, which allows easy use of circular polarising filters. A focus range limiter switch helps speed up autofocus acquisition by restricting the search distance. The diaphragm uses eight rounded blades for smooth background rendering.
70-200mm range with f/4 constant aperture
The 70-200mm focal length covers a diagonal angle of view from 34 to 12 degrees, suitable for sports, wildlife and portrait work. Minimum focus distance is 3.90ft, allowing reasonably close subject isolation. The aperture stops down to f/32 for extended depth of field when needed. At 200mm the fixed f/4 aperture gathers less light than f/2.8 alternatives, limiting low-light handheld use.
Highlights
- L-series optics deliver professional contrast with fluorite and UD elements
- Ring-type USM gives fast, quiet autofocus with full-time manual override
- Constant f/4 aperture maintains exposure through the 70–200mm zoom range
- Inner focusing keeps the front element stationary for polariser use
- Weather-sealed construction protects the lens in challenging conditions
Specifications
| Brand | Canon |
|---|---|
| Model | 2578A002 |
| Part | SLR Lenses |
| Type | Telephoto Zoom Lens |
| Color | White |
| Diameter | 67 mm |
| Compatibility | CANON EF Mount Camera |
| Focus Type | Auto Focus |
| Focal Length | 70 - 200 mm |
| Aperture | 4 |
| Camera Mount | Canon EF |
| Angle of View | 34 - 12 degrees |
| Minimum Focus Distance | 3.90ft |
| Lens Construction | 16 elements in 13 groups |
| Filter thread (Diameter) | 67 mm |
| Specifications | EF 70–200mm f/4 L USMFocal Length Maximum Aperture: 70–200mm 1:4.0 Lens Construction: 16 elements in 13 groups Diagonal Angle of View: 34° – 12° Focus Adjustment: Inner focusing system with USM Closest Focusing Distance: 1.2m / 3.9 ft. Zoom System: Rotating type Filter Size: 67mm Lens Hood: ET–74 Lens Cap: E–67U Lens Pouch / Soft Case: LP1224 Max. Diameter x Length, Weight: 3.0 x 6.8, 25 oz. / 76 x 172mm, 705g OPTIONAL ACCESSORIES Magnification with Extension Tube EF 12: 0.23x – 0.06x Magnification with Extension Tube EF 25: 0.39x – 0.13x Focal Length with Extender EF 1.4x II / EF 2x |
| Autofocus | Yes |
| Focus Adjustment | Inner focusing system with USM |
| Zoom System | Rotating Type |
| Features | High-performance, L-series telephoto zoom lens combining light weight and compactness with an f/4 maximum aperture. Inner focusing and the ring USM enable quick and quiet autofocusing. Also, a circular polarizing filter can be attached and used without difficulty because the front lens element does not rotate during focusing. |
| Dimensions | 3.00" x 6.80" (Max. Diameter x Length) |
| Weight | 25.00oz |
| Shipping weight | 1.11 kg |
| Package size | 262 × 140 × 132 mm |
Questions about this item
Which Canon EF 70-200mm f/4L USM variant should I choose?
This listing is for the single 2578A002 model with a constant f/4 maximum aperture and white barrel; no other versions or capacities are offered.
What does the 70-200mm focal range mean on my camera?
On a full-frame body it covers 34° to 12° diagonal angle of view; on APS-C the effective range is tighter, suited to sports and portrait work.
How does the Canon EF mount limit this lens in practice?
The EF mount fits all Canon EOS cameras; the lens has no built-in stabiliser, so handheld shutter speeds depend on body stabilisation or technique.
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