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Canon EF 17-40mm f/4L USM Lens


Features

  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/4 to f/22
  • One Super Ultra-Low Dispersion Element
  • Three Aspherical Element
  • Super Spectra Coating
  • Ring-Type Ultrasonic Motor AF System
  • Weather-Sealed Construction
  • Rounded 7-Blade Diaphragm

SanDisk

The Canon EF 17-40mm f/4L USM Lens is a versatile wide-angle zoom lens known for its L-series optics and durable construction. Here are its key features and specifications:

Wide-Angle Zoom Lens:

Designed for full-frame Canon EF-mount DSLRs.

Compatible with APS-C models, providing a 27.2-64mm equivalent focal length range.

Constant f/4 Maximum Aperture:

Maintains consistent illumination throughout the zoom range.

Offers a balance between performance and portability.

High-Quality Optics:

One Super Ultra-Low Dispersion (UD) glass element reduces color fringing and chromatic aberrations.

Three aspherical elements minimize spherical aberrations and distortions for improved sharpness.

Super Spectra coating reduces flare and ghosting for enhanced contrast and color neutrality.

Ring-Type Ultrasonic Motor (USM):

Fast, precise, and quiet autofocus performance.

Internal focusing system for overall lens balance.

Full-time manual focus override for manual adjustments.

Weather-Sealed Construction:

Sealed against dust and moisture, making it suitable for challenging environmental conditions.

Ideal for outdoor and travel photography.

Rear Filter Holder:

In addition to the front 77mm filter ring, the lens has a rear filter holder for up to three cut gel filters.

Provides creative options for controlling light and achieving desired effects.

Rounded Seven-Blade Diaphragm:

Creates a rounded aperture with seven blades for smooth and pleasing bokeh.

Beneficial for achieving a pleasing out-of-focus quality.

L-Series Build Quality:

Member of the esteemed L-series, known for premium optical quality and durability.

Sealed construction adds to the lens’s resilience in challenging conditions.

Categories: , Tags: , , ,
LENS
Angle of View
104° to 57° 30′
Diaphragm Blades 7, Rounded
Dimensions (ø x L)
3.29 x 3.81″ / 83.57 x 96.77 mm
Filter Size
77 mm (Front) Gel Filter (Rear)
Focal Length 17 to 40mm
Focus Type Autofocus
Format Compatibility Full-Frame
Lens Mount Canon EF
Maximum Aperture f/4
Maximum Magnification 0.24x
Minimum Aperture f/22
Minimum Focus Distance
11.02″ / 28 cm
Optical Design
12 Elements in 9 Groups

Brand

Canon

Canon has established itself as a leader in imaging technology, known for its quality and innovation. From pioneering the first camera with a built-in motor drive to developing advanced DSLRs and mirrorless systems, Canon continues to set industry standards. Foto Crown is a trusted source for Canon products in Pakistan, offering a wide range of cameras and accessories. Check out their competitive prices for Canon products to find the perfect equipment for your needs. Foto Crown offers the best prices on Canon products in Pakistan, ensuring you get top-quality cameras and accessories at affordable rates. Whether you're a professional or an enthusiast, Foto Crown provides competitive pricing without compromising on quality.
SanDisk

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