What's the speed of the film you're using?
你用的胶卷感光度是多少?
" For example: If your flash is good to20 feet at ISO100( film or digital), it will be good to40 feet at ISO400.
如果你需要闪光距离达到40英尺，则需要使用感光度400的胶卷。
unexposed sensitized instant print film in rolls
瞬时印制胶卷,感光的,未曝光的
instant print film, in rolls, sensitized, unexposed
瞬时印制感光胶片,成卷,未曝光
unexposed sensitive microfilm in rolls
缩微胶片,卷状,感光的,未曝光的
The films and plates are put in their holders the night before the eclipse.
胶卷或感光片应在日食前装入暗盒。
The film is coated with light-sensitive chemicals, which are changed by the different shades and colours of light.
胶卷上涂了一层感光的化学物质，这些物质因光的不同色度与颜色而改变。
To process(a photographic plate or film)too long or in too concentrated a solution.
使显影过度处理（摄影用感光板或胶卷）所用时间太长或所用显影液浓度太高
Grab second camera with faster film, sling both cameras around neck, climb tree behind bridge.
抓出已经装好感光速度更快的胶卷的相机,把两架相机都套在脖子上,爬上桥后的树。
A lightproof cartridge containing photographic film or plates, used in specially designed cameras.
暗匣装有摄影胶卷或感光板的防光胶卷盒，用在特殊设计的照相机中
In photography, the light sensitivity of film emulsion.
在摄影技术中,胶片感光乳剂的光敏度。
the intensity of light falling on a photographic film or plate.
摄影胶片或感光板所受光的强度。
(photography; of film) coated on the side opposite the emulsion with a substance to absorb light.
（摄影术；关于胶卷）在感光剂的背面涂上一层物质以吸收光线的。
photographic film in rolls (excl. of paper, paperboard cloth), sensitized, unexposed, whether or not perforated
成卷摄影感光胶片（不包括纸、纸板或布制的）未曝光
She stared at them, feeling guilty.
她凝视着胶卷，深感愧疚。
the act of exposing film to too much light or for too long a time.
胶卷曝光的时间过长。
To expose(a photographic film or plate) too long or with too much light.
使（底片等）曝光过度使（摄影用的胶卷或底片）暴露过久或过分曝光
a base of celluloid covered with a photographic emulsion; used to make negatives or transparencies.
覆盖着感光胶剂的一卷赛璐珞；用作底片或幻灯片。