能不能调，看说明书，就我所知，以前尼康机器的live view比较不好用，不能和今时今日的比。转一个dpreview的评价。

In the PASM shooting modes, the live view image will darken or brighten to reflect any exposure compensation you set, although sadly there's no live histogram to help judge the optimum exposure. To compound this there's no exposure meter display in live view, so to get an accurate idea of exposure you need to leave live view, and take a look at the meter display on the 'info' panel.

The D7000's Live View aperture control behaviour also shows an odd quirk that first appeared on the D300. When you enter Live View, the camera will stop down to the currently set or metered value (offering an undocumented depth-of-field preview in the process), but what it won't then do is readjust the aperture opening 'live' if you change it. It will honour the set aperture when actually making an exposure, and indeed return to live view at that aperture afterwards; alternatively you can force it to readjust by exiting and re-entering live view.

This behaviour is, simply, a bug, rather than some fundamental limitation of the F-mount; the D3 series bodies can continuously adjust aperture in live view, exactly as you'd expect.

Overall, the D7000's Live View is certainly quite functional as a basic means of framing for stills and video shooting, as long as you understand its limitations. However it lacks many of the more advanced features you'll find on more expensive SLRs, or full-time live view cameras such as the Sony NEXs or Olympus Pens.

至于测光，取景器测光用的是反光镜下单元，LV测光是直接用感光单元，分区和权重可能不一样，得出的结果不一定一样。


【 在 sengseng 的大作中提到: 】
:
: 想各位老师请教一个问题，机器是D7000、
: 平时都用取景器的，今天偶尔用了一下屏幕取景，发现一个问题，光圈优先的情况下，使用同样的iso，同样的焦距，同样的光圈，拍摄同样的照片，屏幕取景拍摄的照片快门是1/20s，而取景器取景的时候，快门是1/50s。
: 为什么屏幕取景会出现更慢的快门呢？光圈优先的情况下，屏幕取景的这个快门时间和光圈的组合搭配，在使用取景器取景的时候，是无论如何也调不出来的。
: 谢谢。

#发自zSMTH@Redmi Note 11
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