These tile pattern is a real pain and persists for months now. 
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The only solution I found for this was to go back to using the standalone programs.
Thanks for the input, I tested the same image with 3.2.2 and still see the pattern.
There are a number of possible explanations I think.
- It’s specific to certain camera sensors.
- It’s hardware specific.
- It’s a Lightroom issue.
I saw it occasionally in the past, but no longer. Here’s a recent night shot of mine processed in TPAI and with On1’s spot removal feature on (which would also reveal any grid pattern)
I send from On1 not LR.
You are welcome to test this file yourself
Unique Download Link | WeTransfer
I’ve been wondering if it’s something intrinsic to my files (Sony .arw’s, a6400/a6700), as a lot of reports were with Sony’s, but depending on whether I work on a jpg or arw of the same image, the grid size changes, and I’ve seen reports with other camera brands (although possibly Sony made the sensor). I could potentially see block effects with jpgs but it’s hard to image how they get there in raws given how the sensor scans (and the grids are >400 pixels, so it’s beyond jpg compression blocks).
I’m in the Capture 1 camp, so it’s not limited to LR. But I can get the same effect using tpai as a standalone, so I don’t think it’s related to ancillary software, and viewing a processed jpg in C1 or Affinity gives the same result.
It’s also markedly less in DenoiseAI 3.7.2, which makes it seem, well, not sure, really.
In your image, do you see anything if you crank the exposure? I tend to see it more in dark areas that get lightened after tpai, but looking over my shots, I don’t have a lot of monochromatic sky to really test with.
Someday I’ll have to do some systematic tests including uncompressed raws and other various things (like my dad’s Lumix DMC-TZ3 and a couple phones, electronic vs mechanical shutter, etc.) to at least rule out a few things.
Mine are also ARW files shot on an A6700.
Try testing the file I uploaded to WeTransfer. If you see the grid pattern, then it could relate to your configuration.
I have been working with a lot of night and other lowlight images and have not seen the pattern at all.
thanks - how do I get to the file?
Just click on the link in my post above and it will take to WeTransfer and then click on Download.
I’d be happy to look at one of your problematic images if you can upload it there. It’s a free transfer service and worth registering for. I think the raw files are too big to paste here.
Here’s the arw: Unique Download Link | WeTransfer
Here’s what I get if I denoise before adjusting exposure:
I get an orange flare at the tail, a grid, and loss of color depth in the background.
Thanks!
oh, and the linked file is 0729 and appears to be a tiger statue.
Sorry I uploaded the wrong file! It should have been 0792!
Here is another link. Will look at your file soon.
I loaded your image into TPAI standalone (v3.3.3). After denoising and then adjusting exposure in On1 PR this is what I got. No artefacts!
I am baffled. Are you using the latest version of TPAI? I am on an M1 Mac Mini running Sequoia.
I get:
(top left - untreated arw, top right, tpai normal default, bottom left tpai strong 53)
not a grid but I’ve seen the blocks around bright objects before (especially a full moon).
tpai 3.3.2 and 3.3.3 (I don’t know if they’re different on Windows). I’m on a i5-8500/UHD630 Windows 11 PC. I get the same effects on a newer Windows 10 PC (both 32 GB Ram).
Both of my systems meet Topaz specs, but maybe there’s something about the Windows version.
(I also lose color gradation if I over-denoise (~30) your tiger statue in the shadows at the lower left - do you see that at all?)
All I that was done on the 0792 image was RAW Denoise, which is a default. I did not denoise further. The 0729 image was sent by mistake. It was shot at ISO 100, so I would not want to denoise it in TPAI.
I have also been having these issues as most of my photography is low-light. After searching through the forums here and from google, this issue has been around since 2018!! Is there any kind of workaround?!
I’m guessing I need to edit the images first in RAW then export it to something that TPAI likes as opposed to first denoising / sharpening the RAWs and editing.
So is there a file format that I can run through TPAI which will not produce artifacts? What is the highest quality format that will not produce artifacts? or does this even exist? Does TPAI always produce artifacts?
Also, when I brought up something similar before the thread was left to die with no solution:
I’m not seeing it in all of the images, but from some I spot it very easily. It’s much more recognizable on the actual image than these as attaching the image here seems to downgrade it a bit.
Topaz Photo AI [v1.2.8] on [Windows]
I think the issue is same as in here:
I am also getting this faint grid with latest update when using export as raw via the plug-in option.
This looks like an artifact that is appearing due to either Raw Remove Noise or Enhance Resolution. The grid pattern is especially significant if the two filters are used together.
We will be working on updating the models to prevent this artifact.
@waltteri.reunamo @mountainbikers-78738
Please upload the files to my Dropbox so I can try to reproduce this issue which should make it easier to fix. Please be sure to send me a note to let me know you sent something.
Dropbox File Request
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Hii,
I uploaded the images to your dropbox.
Ditto. Interestingly, the first mention of this grid artefact issues that pops up on a Google search shows it being raised back in 2018! Have Topaz had enough time to fix it yet?
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