Menu Position MENU --> 1 --> Viewfinder Brightness
What it Does Lets you control the brightness intensity of the EVF
Recommended Setting Manual +1
This does exactly the same thing as the Monitor Brightness setting (previous section). The only difference is there is no “Sunny Weather” setting (it is assumed that you’re using the EVF precisely because you’re in sunny weather and can’t see the LCD screen so easily.)
There is an option to set this to "AUTO" brightness, by the way. It senses the ambient light level by using the light coming through the lens (and read of the sensor). Clever! And although Sony has tweaked the implementation so it looks brighter than in previous models, I'm still recommending setting this to Manual +1 for the easiest-to-see image in bright daylight.
TIP: When shooting either 4K or any form of High Frame Rate (100 / 120 fps) video, the setting for Monitor Brightness (previous section) and Viewfinder Brightness are ignored. |
Menu Position MENU --> 1 --> Finder Color Temp.
What it Does Lets you make the viewfinder yellower or bluer
Recommended Setting 0, but your mileage may vary
If you’re a stickler for color accuracy, it’s possible that the color balance of the LCD doesn’t match that of the EVF exactly. (The two look very close to me on my cameras.)
The good news is Sony has provide a way to assign a slight color shift to the EVF to make it a little more yellow (-2) or a little more blue (+2) using this feature. The amount of change is roughly the same as what the camera offers with white balance bracketing (Lo) – described in Section 6.9.8.
Menu Position MENU --> 1 --> Gamma Display Assist
What it Does Lets you see Video Live View without the gamma curves applied
Recommended Setting n/a
Let’s say you invoked one of the camera’s MENU --> 
5 --> Picture Profiles to get your S-Log3 gamma curve applied to your movies (Section 6.28). Normally the S-Log3 compresses the dynamic range, making everything look very low contrast. (You’re supposed to fix it later in post-production via a process called “Grading”.)
Anyway, normally the camera shows you the compressed, low-contrast image when you’re shooting video, like a faithful little live view feature should. But it can be hard to see what’s going on, and for those times you can enable this feature to match the particular gamma curve you’re using, and it applies an inverse Look Up Table to the Live View, making it look “normal” to you, all the while the compressed video is being written to the card. This is the video equivalent of Live View Display (Section 7.12).
Here are the choices the camera gives you:
TIP: This feature only applies to movies that are played back on the camera’s LCD monitor or EVF – not to any external display via the HDMI port. |
Menu Position MENU --> 1 --> Volume Settings
What it Does Determines the volume of movies when played back in-camera
Recommended Setting n/a
This menu item controls how loud your movies are played back through the tiny built-in speaker (the three little holes above the connector door). It has no effect on other camera functions (such as the focus confirmation beep, or the self-timer beep).
Menu Position MENU --> 1 --> Audio signals
What it Does Enables / Disables audio feedback during camera operation
Recommended Setting Off (personal preference)
The recommendation of “Off” is actually an unjustifiable personal preference. Audio feedback can be nice at times, but I have always preferred my cameras to be as quiet as possible. Either setting (On or Off) is good.
Note that this setting does NOT apply to video playback – if you want to control the sound for video (including turning it OFF) you must go to MENU --> 
1 --> Volume Settings discussed in the previous section (0 = “no sound”).