depth of focus

基本解释

A novel method for measuring dense-line depth of focus(DOF) of a lithographic projection system is proposed.
提出了一種檢測光刻機投影物鏡密集線焦深（DOF）的新技術。
Methods Qualitative methods of in-depth interview, focus group discussion, field observation and mystery patient.
方法定性研究個人深入訪談、專題小組討論、現場觀察和假扮病人。
Methods Qualitative methods of in-depth interview, focus group discussion, field observation and disguised patients were used.
方法定性研究方法爲個人深入訪談、專題小組討論、現場觀察和假扮病人。

When set to Manual, consumers can experiment with features such as slower shutter speeds, depth-of-field and even focus.
ENGADGET: Samsung's PMA gifts: HD pocket camcorders, point-and-shoots with AMOLED screens
New Miniature Filter narrows the depth of focus and enhances color and contrast to convert your real-life images to look like a magical toy world.
ENGADGET: Olympus launches SP-810UZ, packs 36x wide-angle zoom in a compact camera
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)

the amount by which the distance between the camera lens and the film can be altered without the resulting image appearing blurred &rarrcompare depth of field