You have to put a deep red filter on the lens to increase the contrast.

你还需要在镜头上加一块深红色的滤光镜来提高反差。

youdao

Increase the contrast using the Curves to emphasise the highlights and creased lines.

增加使用曲线的对比，强调的重点和折痕线。

youdao

The images combine infrared and visible light to increase the contrast between water and land.

这些图片通过结合红外线及可见光来增大水体和陆地的对比。

youdao

Both guys are keenly aware of the areas where the prototype needs improvement, and insist that the LTE-packing YotaPhone will soon get a new case to house the double Gorilla Glass screens, an improved power button (which also doubles up as the SIM slot), and very likely a superior E Ink panel that will increase the resolution to 220 dpi and also improve the contrast.

ENGADGET: YotaPhone Android prototype with dual LCD and E Ink displays hands-on (video)

This latest monthly increase was in contrast to the fall across the UK as a whole.

BBC: Unemployment: Mixed picture for NI jobless figures

Real nonresidential fixed investment decreased 1.3 percent in the third quarter, in contrast to an increase of 3.6 percent in the second.

FORBES: U.S. GDP At 2%, Economy Continues On Treadmill