optical zoom
noun[CorU]
uk/ˌɒp.tɪ.kəl ˈzuːm/us/ˌɑːp.tɪ.kəl ˈzuːm/adevicein acamerathat uses the camera'slensto make the thing beingphotographedappearnearer:
光学变焦Thecameracomes with 10Xopticalzoom.该相机带有10倍光学变焦功能。
Mostdigitalcamerashave bothopticalzoom, in which thelensmoves, anddigitalzoom, whichmanipulatestheimageelectronically.大多数数码相机都有光学变焦和数码变焦两种功能，前者通过镜头移动，后者则以电子方式处理图像。
Compare
digital zoom
- The camera’s 18xopticalzoomis among the industry’slongestzooms.
- Using ahigh-resolutioncamcorderanditsopticalzoomlens, acolleaguesnappedeightclose-upphotosof myeye.
- If youwantmoremagnificationthan theopticalzoomcanhandle, it'sbettertoachieveit on acomputerafter thefact.
Photography
- airbrush
- aperture
- bokeh
- camera
- camera obscura
- expose
- glossy
- grain
- high-resolution
- hologram
- holographic
- holography
- kinetoscope
- pap
- picture
- PillCam
- pin-up
- pinhole camera
- pix
- projection