Canon EF 50mm F1.8 II Lens for EOS / EOS M

Specifies the type of autofocus motor used in a lens or camera component, indicating its mechanism and performance characteristics. Common values include USM (Ultrasonic Motor), STM (Stepping Motor), HSM (Hyper Sonic Motor) and others. This attribute helps users compare autofocus speed, noise level, and compatibility with camera bodies.

The minimum distance at which a camera lens can focus on an object while maintaining sharpness and clarity. It is expressed as a linear measurement (e.g., meters or centimeters) and indicates how close the subject can be to the sensor before the image becomes out of focus.

The linear measurement across a circular or round object, taken through its center. It is expressed in units of length such as millimeters, centimeters, inches, or feet and represents the widest span of the item.

Indicates whether the device includes an image stabilization system, either optical or electronic, that reduces camera shake to produce sharper photos and smoother video recordings.

The linear dimension of a product measured in a standard unit such as meters, centimeters or inches. It represents the overall size along one axis and is used to compare physical dimensions across similar items.

The classification of a camera lens, indicating its optical design and intended use such as prime, zoom, wide‑angle, telephoto, macro or specialty types (e.g., fisheye, polarizing). It helps buyers understand the lens’s focal range, aperture characteristics, and typical shooting scenarios.

The optical magnification factor of a device such as a camera lens, binoculars or telescope. It indicates how many times larger an object appears compared to its actual size when viewed through the product. Values are expressed as a multiplier (e.g., 2x, 10x).

The highest f‑number (aperture value) that a camera lens can achieve when fully wide open. It indicates the maximum light‑gathering capability of the lens and is expressed as an integer or decimal without units.

The total count of individual diaphragm blades included in the product. It indicates how many separate blades are present, which can affect performance characteristics such as airflow or pressure control.

The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.