索尼知情人员透露：

A77并不能直接输出的全高清1080p，只有在记录模式时才能输出全分辨率。

目前尚不清楚这是为什么，也不知道HDMI是否能无压缩或者4-2-2 8bit，10位非压缩或10bit等
如果在实时取景和记录模式切换时分辨率改变了，一些监视器和EVFs可能黑屏一下，就像是佳能600D，那么这将是A77的一个问题。
他还声称，摩尔纹，锯齿和果冻效应已经解决，应该没什么问题。
目前的问题是缺乏音频控制。索尼希望人们选择VG20的via HDMI手动控制音频，虽然情况比以前好多了 - 至少现在我们有重要的基础。
哪些固件升级？
更新：索尼也说，A55在视频模式下的过热问题已改进了，是防震内的运动引起的。A77的防震是电子的，而不是电子传感器位移。

最近好久没译文章，这简单翻的，有错漏需要大家踊跃指正啊！

英文原文：

Sony A77 – No moire but HDMI output not full HD?

In a chat with a very helpful Sony gent in the UK I asked whether the HDMI output stays on during recording on the A77.
His answer is rather surprising:
The A77 does not output full HD 1080p during live view. Only when record is activated does the full resolution get output.
Now there is always a chance this Sony chap might be wrong. The camera was hooked up to a Sony Bravia during the talk and there was a lot of shooting info cluttering the screen but the feed didn’t seem to change resolution when record was hit – instead a black box appeared for a few second saying that recording was starting – but  the video feed then didn’t become full screen and all the display info was still visible including AF points. I am sure the shooting info can be disabled somehow for a clean HDMI feed to external recorders and monitors but we have no evidence of that yet.
It’s not clear why this is or whether HDMI is uncompressed or 4-2-2 8bit, 10bit, etc.
If resolution does actually change between live view and record mode some monitors and EVFs might blank out when record is hit like with the Canon 600D so this may be an issue with the A77.
He also claims that moire, aliasing and rolling shutter have been solved and should not be a problem.
The other current issue is the lack of audio control. Sony want people to choose the VG20 for monitoring via HDMI and manual audio control it seems, though the situation is much better than before – at least now we have the essential basics and I still recommend the new Sony cameras for aspiring filmmakers.
Firmware update anyone?
Update: Sony also say the overheating issues of the A55 in video mode have been diminished and were caused by the movement of SteadyShot inside. With the A77 SteadyShot is electronic rather than sensor shift.

原文链接：http://www.eoshd.com/content/3763/sony-a77-no-moire-aliasing-but-hdmi-output-not-full-hd-during-live-view