... 定幅录声 constant amplitude recording 定焦点透镜 fixed focus lens 定焦盘 prefocus plate ...
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... pinhole camera 针孔相机 fixed focus lens 定焦镜头 standard lens 标准镜头 ...
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fixed-focus lens 固定焦距透镜 ; 定焦点透镜
BEST CSC FIXED FOCUS LENS 最佳微单定焦镜头
fixed-focus telephoto lens 定焦点远摄透镜
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The main lens is fixed in place; there is no auto-focus, auto-aperture, or other gubbins.
主要镜头是固定的，没有自动对焦和自动光圈以及其他小配件。
youdao
In addition to daily use as a "pan-focus" lens featuring a wide angle, fixed f8 aperture and shallow depth of field, it is compatible with manual focusing using a lever and capable of close-up shooting as close as 30 cm.
ENGADGET: Olympus E-PL5 and E-PM2: Micro Four Thirds cameras with OM-D-like focusing, performance boosts (hands-on)
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