Unlock the Panasonic GH4’s ISO Settings

Configuring the Panasonic GH4 for Video
By Sol March in Resources

The GH4’s ISO controls can sometimes feel like you’re trapped in a house with 3 bears– one setting isn’t enough, while the next setting is too much.

All you want is the perfect ISO setting, but instead, you’re stuck in a house with a trio of stubborn bears.

If you find yourself wishing upon a star for more control over the GH4’s ISO settings, here’s a quick tip to triple the number of ISO options, so that you’ll always be able to find an ISO setting that’s just right.

By default, the GH4 adjusts the ISO in 1 stop steps (200, 400, 800, 1600, etc.), but with this simple tweak, you’ll be able to adjust ISO in 1/3 stop increments (200, 250, 320, 400, 500, 640, 800, etc.).

Here’s a comparison of the ISO settings you have access to before and after the tweak:

GH4 ISO Increments: Standard vs Extended

Why Haven’t I Heard About This Before?

There’s a good reason you haven’t already come across this setting, especially if you use the GH4 primarily for video– the setting is hidden in the Photo menu.

Weird, right? There’s no rhyme or reason to the setting’s placement, especially since it’s fully functional when shooting video as well. Unfortunately, the Photo menu is inaccessible when the camera is set to video mode, so it’s possible that you never would have found this setting if you primarily use the GH4 for video work.

Thankfully, once you know where to look, extending the GH4’s ISO increments is dead simple. Here are the step-by-step instructions:


  1. Switch the GH4 to Manual Photo Mode — Allows you to access the Photo menu.
    Switch to Manual Photo Mode
  2. Go to Menu/Rec (5)/ISO Increments
    ISO Increments Setting
  3. Select the 1/3 EV option — Unlocks the extended ISO options.
    Set ISO Increments to 1/3 EV
  4. Exit the menu and switch back to Manual Video Mode
    Switch Back to Manual Video Mode

Now when you open the GH4’s ISO settings, you’ll be greeted with a lot more granularity over ISO for setting your exposure.

Standard ISO increments:

ISO 400 Selected

Extended ISO increments:

ISO 320 Selected

Important: Remember to resave your custom profiles after you’ve unlocked the extended ISO increments so that you’ll have access to the increased range of ISO options when using the custom profiles as well.

More ISO Options FTW?

Does everyone need more ISO increments? No. Many shooters are happy with the standard 1 stop increments. However, if you’ve been wishing for a way to get that perfect ISO, this quick tweak may be what you need.

Now get out of that house– bears can get grumpy, especially around lunch time.


Configuring the Panasonic GH4 for Video


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