Which lens has a fixed focal length?

Which lens has a fixed focal length?

• A. Fixed Focal Length
• B. Zoom Lens
• C. Prime lens
• D. Variable Focal length

Answer: (C)

When a lens has a fixed focal length, its magnification stays the same—you can’t zoom in or out. That means you rely on moving closer or farther from the subject to frame your shot. A prime lens is defined by this trait: it has a single focal length, such as 50mm or 35mm. In contrast, a zoom lens or a lens described as having a variable focal length can change its focal length, letting you zoom without moving. The other option’s phrase describes the feature rather than naming the typical lens type, so the lens that truly fits the description of a fixed focal length is the prime lens.

When a lens has a fixed focal length, its magnification stays the same—you can’t zoom in or out. That means you rely on moving closer or farther from the subject to frame your shot. A prime lens is defined by this trait: it has a single focal length, such as 50mm or 35mm.

In contrast, a zoom lens or a lens described as having a variable focal length can change its focal length, letting you zoom without moving. The other option’s phrase describes the feature rather than naming the typical lens type, so the lens that truly fits the description of a fixed focal length is the prime lens.