Canon Eos 90D Ef-S 18-135Mm 4K

The minimum and maximum f‑number (aperture value) that a camera lens or optical system can achieve, expressed as a numeric range (e.g., "F1.4-F16") or a single value when only one aperture is available. It indicates the zoom and light‑gathering capability of the lens.

A list of the memory card formats that a product can read or write, such as SD, microSD, SDHC, SDXC, XQD, CFexpress, and other proprietary types. Each entry represents a distinct card format compatible with the device’s built‑in reader or slot.

The distance between the optical center of a lens and its image plane, expressed in millimetres. It can be a single value for fixed‑focal lenses or a range indicating the minimum and maximum focal lengths covered by zoom optics. This measurement helps users understand the field of view and zoom capability of cameras, lenses, and other optical devices.

A concise textual summary of the camera lens’s key characteristics, such as focal length, aperture range, autofocus type, zoom capability or special features. The value can be a single phrase (e.g., "31mm f/9") or a brief sentence describing the lens system (e.g., "Autofocus system via 2 fixed focus zones 0.55m-1.3m, 0.6m-infinity"). It is intended to give buyers quick insight into what type of lens is included with the product.

The name of the mechanical or electronic interface that allows a camera lens to attach to its body, such as Canon EF, Nikon F, Sony E‑mount, Micro Four Thirds, etc. The value can be a single interface name or a comma‑separated list of multiple compatible mounts.