Crossing the black filter we enter to the night part of the house where the effect is similar to the day part.

穿越黑滤芯我们进入到了房子的效果类似日间部分之夜。

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Providing a method for reporting missed spam, automatically updating black and whitelists, and using a secondary filter system can all help to reduce the amount of spam that reaches your inbox.

提供一种报告遗漏垃圾邮件的方法，自动地更新黑名单和白名单，并且使用辅助的过滤系统可以帮助减少到达收件箱的垃圾邮件的数量。

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If black and white is too extreme for you, you can also try Photoshop's Photo filter tool and adding color tints.

如果黑白效果不是你的菜，你也可以通过PS的滤镜来增加色彩效果。

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All Samsung Plasma TVs will have Samsung's proprietary Real Black Filter, previously only available in premium models, to deliver improved black levels and color contrast.

ENGADGET: Samsung details pricing and availability for its 2012 Smart TV lineup

Last May, Plastic Logic demonstrated a paper-like flexible screen capable of playing video in colour, which is achieved by placing a filter on top of the original black-and-white display.

BBC: Bend me, shape me: Flexible phones 'out by 2013'

The first permanent colour photograph was taken by Thomas Sutton who was working with Clerk Maxwell and is a composite of three black and white pictures, each one taken through a red, green or blue filter.

BBC: Pioneering colour photography