Mark Ellington
Canon EF 17-40mm f/4L Ultra Wide Lens
Introduction
The Canon EF 17-40mm f/4L USM Ultra Wide Angle Lens is a renowned product from Canon, a leading manufacturer in the world of imaging and optical technology. This ultra-wide-angle zoom lens is designed specifically for Canon SLR cameras, making it an invaluable tool for photographers who wish to capture expansive landscapes, architectural marvels, and dynamic scenes. With its robust construction and impressive optical quality, it aims to meet the needs of both professional and hobbyist photographers alike.
Product Overview
The lens features a focal length range of 17-40mm, with a constant maximum aperture of f/4, allowing for versatility in various lighting conditions. It boasts a diagonal angle of view of 104° at 17mm, enhancing your ability to capture wide scenes without distortion. This lens is particularly suited for wedding and nature photography, thanks to its weather-resistant construction that protects it from the elements.
Appearance and Design
Constructed with high-quality materials, the Canon EF 17-40mm f/4L lens has a sleek black finish that exudes professionalism. Its robust build includes a weather-sealed design that ensures durability in various shooting environments. One of the unique features of this lens is its rounded seven-blade diaphragm, which contributes to a soft and pleasing out-of-focus quality, making it an excellent choice for selective focus techniques. The front element supports 77mm screw-in filters, adding further versatility to the lens.
Key Features and Specifications
- Focal Length: 17-40mm
- Maximum Aperture: f/4
- Diagonal Angle of View: 104° 57′ 30”
- Closest Focusing Distance: 0.9 feet (11 inches)
- Three aspherical lens elements and super UD glass for superior optics
- Ring-type Ultrasonic Motor (USM) for fast and silent autofocusing
- Weather-resistant construction (water and dust resistant)
- Compatible with 77mm filters
- Full-frame format and EF-mount design
- Dimensions: 3.3 inches in diameter
- Price: $599
User Experience
Using the Canon EF 17-40mm f/4L lens has been a delightful experience across various photography scenarios. In landscape photography, the wide-angle view allows for expansive captures of breathtaking vistas, with minimal distortion along the edges. The lens performs admirably in low-light conditions, thanks to the f/4 aperture, and the fast autofocus capabilities ensure that you won’t miss a moment.
When shooting weddings, the lens excels at capturing both wide group shots and intimate moments, providing clarity and depth. Its weather-resistant feature has proven invaluable during outdoor shoots, giving me peace of mind in unpredictable conditions.
However, one must note that while f/4 is decent, it may not be sufficient for extremely low-light environments compared to faster lenses. Additionally, the lens is relatively heavy, which could be a consideration for those who prefer lighter gear during long shoots.
Pros and Cons
Pros:
- Excellent optical quality with minimal distortion
- Fast and silent autofocus thanks to USM technology
- Weather-sealed construction for durability in various conditions
- Versatile focal length suitable for various photography styles
Cons:
- Fixed f/4 aperture may limit low-light performance
- Relatively heavy compared to some alternative lenses
Conclusion
Overall, the Canon EF 17-40mm f/4L USM Ultra Wide Angle Lens stands out as a powerful tool for photographers seeking to unleash their creativity. Its impressive optical performance, robust construction, and versatility make it a worthy investment for both amateur and professional photographers. While it does have some limitations, particularly in low-light situations, its strengths far outweigh the weaknesses. Whether you are capturing sweeping landscapes or intimate wedding moments, this lens is sure to enhance your photographic journey.
