Canon ef 40mm lens

Designed to provide a versatile zoom range, the Canon EF 17-40mm f/4L USM is an L-series lens. This lens features an optical design with three aspherical elements and a Super Spectra coating. The Canon EF 17-40mm f/4L USM lens has a ring-type Ultrasonic Motor that provides quick, smooth, and quiet autofocus. The Canon EF 17-40mm f/4L USM lens also has a weather-sealed construction for working in inclement conditions.

The Canon EF 17-40mm f/4L USM lens is designed for full-frame Canon EF-mount DSLRs, but it can also be used with APS-C models. This lens provides a wide-angle to a standard zoom range. It is equipped with an ultrasonic motor for quick and quiet autofocus performance. This lens also features a weather-sealed design for working in various conditions. The Canon EF 17-40mm f/4L USM lens has a Super Spectra coating that helps to minimize ghosting and flare.

Canon EF 17-40mm f4L USM lens performance

The 17-40 f4 USM L lens features image quality that is suitable for landscape and architectural photography. This lens's 17mm focal length allows for capturing wide-angle scenes, while the 40mm end provides a more standard perspective. The f/4 aperture offers a balance between low-light performance and a manageable lens size. The autofocus system of the Canon EF 17-40mm f/4L USM lens is powered by a ring-type Ultrasonic Motor, providing fast and nearly silent performance. This lens is also designed with a full-time manual focus override for refined control over focusing.

Canon EF 17-40mm f/4L USM lens applications

The Canon EF 17-40mm f/4L USM lens is a versatile option for landscape photography, offering a wide-angle perspective that can capture expansive scenes. It is also suitable for architectural photography, allowing photographers to highlight the scale and details of buildings and structures. The lens's standard zoom range makes it a flexible choice for general purpose and travel photography, providing both wide-angle and near-normal focal lengths. The f/4 aperture of the Canon EF 17-40mm f/4L USM lens strikes a balance between low-light performance and a compact lens design, making it suitable for various lighting conditions.