小马甲20171103 发表于 2018-03-05 14:42

感谢这位朋友啊，我也有这个疑问，楼上有朋友说多拍几张，我也浪费了不少快门……最终没个一针见血的解释。
这2个功能只能开1个，二选一。
我刚买来的时候是默认打开高光色调优先，拍出来的照片也不错，那种明暗光比很大的照片 感觉不错，但是遇到个问题，好像是I...

timson 发表于 2018-3-5 16:08
高光色调优先【HTP]是通过实质性降低ISO欠曝来保护高光细节。它影响实际拍摄的ISO，进而影响其它拍摄参数。比如光圈优先下，它影响得到的快门速度。

第三方软件抛弃此设置【实际拍摄采用了的ISO除外】。

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佳能介绍：
Highlight Tone Priority (HTP) All cameras have a fixed dynamic range, from shadow to highlight, that they can capture. HTP shifts some of the available dynamic range from the mid-tones to the highlights to produce smoother tones, with more detail in bright areas. This helps prevent JPEG images with overexposed highlights that can’t be recovered. HTP is also useful to RAW shooters who process their images with Canon’s DPP software. Most third-party RAW processing software will not recognize Highlight Tone Priority. When the camera is set to HTP, the lowest available ISO will be 200. The HTP setting will be indicated by a D+ symbol in the LCD display. Avoid using HTP in low light or when shooting subjects with heavy shadows because it may cause ...

timson 发表于 2018-3-5 15:57
自动亮度优化（ATO)是一种机内曲线处理，主要是提亮暗部[对亮部影响轻微】。使画面曝光平均化【优化】。它不影响ISO，是一种PS处理。

如果用DPP打开RAW，那机上ATO设置自动显示在DPP上。可更改。LR/ACR等第三方软件抛弃此设置。

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佳能介绍：
Auto Lighting Optimizer (ALO) was introduced as a feature on the EOS 450D DSLR in 2008. It is found on all current Canon EOS DSLR cameras, from the entry-level EOS 1100D to the professional EOS-1D X, with the exception of the EOS-1Ds Mark III. The aim of ALO is to provide in-camera processing that will improve the look of your images.

ALO is designed to even out contrast by selectively adjusting areas of the image. It is especially useful when using flash or with backlit subjects as it can detect faces in the frame and brighten those areas to achieve a better result.

ALO analyses contrast in captured images and modifies both shadows and highlights via tone curve adjustments to minimise loss of detail in contrasty light conditions. ...

小马甲20171103 发表于 2018-3-5 14:42
感谢这位朋友啊，我也有这个疑问，楼上有朋友说多拍几张，我也浪费了不少快门……最终没个一针见血的解释。

这2个功能只能开1个，二选一。
我刚买来的时候是默认打开高光色调优先，拍出来的照片也不错，那种明暗光比很大的照片 感觉不错，但是遇到个问题，好像是ISO200起跳还是什么，有个很不爽的地方……忘记是哪里了。
后来就把这个关闭，打开自动亮度优化了……反正日常拍摄，也感觉不出有差。

希望哪位大佬可以帮忙一起解答下 。