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unknown noise when I open photo


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I just purchased Affinity Photo after trying the free trial. I am having a problem opening photos that i did not have on the trial. On the attached photo you can see a lot of what appears to be noise. It goes away if I develop the picture, but then I loose some of the processing features. I downloaded the trial on my imac and it does not do this. The paid version is on windows 10. Thans for any help.

IMG_4001.JPG

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Welcome to the Serif Affinity Forums, douglasc1702. :)

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I downloaded the trial on my imac and it does not do this. The paid version is on windows 10.

Are you perhaps using the Apple Core Image raw engine on your iMac? The Windows version of Affinity Photo uses the SerifLabs raw engine.

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Can you upload the raw image for us to examine it, Douglas?

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

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You have a photo with a lot of noise in it, I believe.

Here is a bit of it on my system (also Windows), in the Develop Persona:

image.png.ce5a173cf34161041d9130cb2a43b960.png

If I enable Noise Reduction in the Details panel almost all of that goes away, and leaves:

image.png.53dcc828f26e774aa098c3265c8714da.png

Possibly on the Mac either the Apple raw engine was being used (Windows uses the SerifLabs engine) or perhaps Noise Reduction was enabled on the Mac and you have it disabled.

(The few remaining dots are because I have Show Clipped Tones enabled in the Toolbar.

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
iPad:  iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1

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"unknown noise when I open photo".

This noise isn't "unknown", this is noise from your camera sensor :-)

Edit: When shooting for long periods of time (typically astrophotography), try using Noise reduction (depending on the type of camera, it may be called differently, and it is a subtraction of the second exposure blindly directly in the camera) on the camera.

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You're welcome.

But the noise is still visible for me unless I enable Noise Reduction, which I think is the real answer for you.

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
iPad:  iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1

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3 minutes ago, douglasc1702@gmail.com said:

the noise is not visible.

As I wrote in my previous post, it is better to try to remove the noise directly in the camera, because any noise reduction methods lead to image degradation and loss of detail.

Affinity Store (MSI/EXE): Affinity Suite (ADe, APh, APu) 2.4.0.2301
Dell OptiPlex 7060, i5-8500 3.00 GHz, 16 GB, Intel UHD Graphics 630, Dell P2417H 1920 x 1080, Windows 11 Pro, Version 23H2, Build 22631.3155.
Dell Latitude E5570, i5-6440HQ 2.60 GHz, 8 GB, Intel HD Graphics 530, 1920 x 1080, Windows 11 Pro, Version 23H2, Build 22631.3155.
Intel NUC5PGYH, Pentium N3700 2.40 GHz, 8 GB, Intel HD Graphics, EIZO EV2456 1920 x 1200, Windows 10 Pro, Version 21H1, Build 19043.2130.

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Douglas, please change your User Name as soon as you can. Using your email address lays you open to spammers.

John

Windows 10, Affinity Photo 1.10.5 Designer 1.10.5 and Publisher 1.10.5 (mainly Photo), now ex-Adobe CC

CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630

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14 hours ago, douglasc1702@gmail.com said:

Thanks. I will try the noise reduction settings in the camera on my next shoot.

🙄

No no no, it is not from the image itself - there is not such extreme noise in the raw data / raw image at all.

If you open it on Photoshop that is much better at removing colour noise - there is not much noise to see at all. It is very well behaved for an ISO 1600 image.

In camera noise reduction settings ... nah. If you are shooing a lot in low light you want better NR and possible plugins for it. Best program for RAW images with noise is DxO Photolab. But you can also achieve some fine results with noise reduction in Photo using layers and layer masks. But as I said, this image is not affected by bad noise at all. At all.

  • "The user interface is supposed to work for me - I am not supposed to work for the user interface."
  • Computer-, operating system- and software agnostic; I am a result oriented professional. Look for a fanboy somewhere else.
  • “When a wise man points at the moon the imbecile examines the finger.” ― Confucius
  • Not an Affinity user og forum user anymore. The software continued to disappoint and not deliver.
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This is what Affinity Photo should see with its LibRAW based RAW algorithms. Not much noise, some colour noise. Something is wrong in Photo's RAW persona.

image.png.fb63796e0ae1d1c51cf2f1eaf1892097.png

  • "The user interface is supposed to work for me - I am not supposed to work for the user interface."
  • Computer-, operating system- and software agnostic; I am a result oriented professional. Look for a fanboy somewhere else.
  • “When a wise man points at the moon the imbecile examines the finger.” ― Confucius
  • Not an Affinity user og forum user anymore. The software continued to disappoint and not deliver.
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Check and hide the midtones preview, the show midtones button might be toggled on in your case. - At least it looks like that when I'm previewing your Canon CR2 RAW file on a Mac, since your intial RAW doesn't have that much noise inside at all.

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The yellow speckled pattern on the preview in the Develop persona is from the "Show Clipped Tones" control being enabled, as the video from v-kyr has demonstrated.  It is displaying clipped (saturated) pixels in the deep shadow areas.  The yellow pixels are not noise, they are the clipping warning overlay - however, there are pixels of color noise that are in the darkest shadow tones and are fully saturated, so they get targeted by the clipping overlay, giving the appearance of yellow speckled noise.

kirk

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