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Thread: Panasonic GH4 Grain

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    Question Panasonic GH4 Grain

    Hello everyone,

    I bought my GH4 about 4 months ago. When I first started recording I didn't notice a lot of grain. It was later when I started using the camera more.
    I noticed that my GH4 produced a lot of grain in the video.
    Even when I record outside in the bright daylight, I've got grain in my video.

    Also noticed that the grain level doesn't really change when I use different ISO levels. When my ISO is 400 I've got the same amount of grain than when my ISO is 1600. I find this really strange and nobody was able to help me.

    I hope somebody can help me out! Appreciate it!

    (LENS) Panasonic MFT 14-140mm F/3.5-5.6 )

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    Re: Panasonic GH4 Grain

    It sounds like you might have an effects mode or custom function enabled somehow. It might be a good idea to reset the camera and reconfigure from scratch.

    Ian
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    Re: Panasonic GH4 Grain

    Thanks for the tip Ian!

    I tried it, but infortunately with no success.

    I'm planning to go to a camera store and ask for some information there.

    I tried everything from resetting the cam to sensor cleaning and all.

    Thanks anyway

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    Re: Panasonic GH4 Grain

    Sorry I could not be of help. Unfortunately, it now sounds more like a hardware issue. Noise relates to heat and maybe the heat-sink on the sensor is no long doing its job properly.

    Best of luck! Please do let us know how things turn out!

    Ian
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    Re: Panasonic GH4 Grain

    Thanks man! If it's true what you say it's really weird. Since its not even 4 months old. I will inform you

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    Re: Panasonic GH4 Grain

    Quote Originally Posted by Jelle555 View Post
    Thanks man! If it's true what you say it's really weird. Since its not even 4 months old. I will inform you
    I hope that means it's under warranty

    Ian
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    Re: Panasonic GH4 Grain

    Hi Jelle,

    Quote Originally Posted by Jelle555 View Post
    Also noticed that the grain level doesn't really change when I use different ISO levels. When my ISO is 400 I've got the same amount of grain than when my ISO is 1600. I find this really strange and nobody was able to help me.
    Unfortunately I'm not going to be able to help either. As you would expect, with my GH4, there is an increase in grain as I increase the ISO. Visually, not so much between close amounts such as ISO 400 and ISO 800, again as we would suspect, but comparing the same frame under the same lighting conditions and settings, there is a progressive increase in grain as I check from 200, 400, 800, 1600, 3200 and 6400.

    I have read there are GH4 users/owners who are not happy with the level of grain in comparison to other cameras they use. And, of course there are those who are not bothered, that's the camp I'm in. There should also be a difference in grain from the formats you are selecting and the between UHD and FHD.

    If you cannot detect a visual difference between ISO settings, can you detect a difference comparing samples using scopes? If there a difference in contrast, luminance, color saturation? If these all remain the same it would appear perhaps your camera has a malfunction and is stuck, but I would imagine you would detect this in the exposure as well.

    Are you in the position to upload a short sample to something like Dropbox, that we could download and take a look?

    Although I have never done it, if you reset the camera, I'm assuming all the settings were set back to factory defaults, eliminating any crazy settings we may have made along the way. But still, I would think no matter what custom settings you have made, you should still see a difference in the ISO.

    Best Regards.....George

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    Re: Panasonic GH4 Grain

    Thanks George! That's a good idea.

    https://we.tl/9iMUNhfMS9 - Download Link for wetransfer

    These are 2 examples of footage I made. It may be me, but the noise levels in this video are extremely annoying. Especially the one with the bottle.

    Thanks for the tips!

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    Re: Panasonic GH4 Grain

    Hi Jelle,

    I downloaded the files, Thank You. I have a few questions if you don't mind....

    1. Are these original source media from the camera, I think they are, please confirm.

    2. Can you post all the settings you are using?

    I would like to setup my GH4 and take some test shots to compare to yours. I think between your monitor, viewer, and eyes, there is a difference between my monitor, viewer, and eyes.....which isn't surprising, as we all see things a bit different. Although I have a two monitor setup, they aren't anything special. I expected to see something a lot worse than they appear to me.

    Also, have you tried recording in 4k and compared the level of grain/noise to that of these 1080p samples? I uploaded a sample mp4 to dropbox. If you can download this file and point out the areas of the frame the noise is most annoying to you, such as foreground, background, dark areas, the whole thing?

    https://www.dropbox.com/s/91m3yk45lw...90723.mp4?dl=0

    Have you had an opportunity as yet to consult with your dealer or Panasonic? I'm still not being of much help, but interested in your issue and the possible resolution.

    Best Regards......George

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    Re: Panasonic GH4 Grain

    Hey George,

    If you mean by Original source media, i havent add any effect. then Yes. it's raw footage.

    My settings are:
    Photo style: CineLike D
    Rec Format: MP4
    Rec Qual: FHD 1920x1080 50Mbps 24p
    iDynamic: off
    iResolution: off
    Master Pedestal lvl: 0
    Luminance lvl: 16-235
    Iris: 3.5
    Shutter 25
    ISO: 400 (I think)

    When I take a look at your footage I almost don't see any noise actually. practically nothing. I notice that the quality isn't perfect. (Doesn't look FHD) but that is probably the fault of dropbox.

    I'm planning to see somebody in a camera store to ask for help.

    I appreciate it man!

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