Artifact in dark areas on upscaling

In dark areas, there is a repeating square artifact when upscaling. I re-ran the same noise/sharpening settings without upscaling, and the artifact was gone. Happy to provide test images upon request. Topaz Photo AI 1.5.0. Ruined an astrophotography enlargement I was having made… It is fairly subtle, but very present on large areas.

I’d call it a bug.

Thanks for reaching out. Please send the following information so I can try to reproduce this.

  1. The original image file.
  2. The processed image.
  3. A screenshot or description of the settings panel so I can see what adjustments were turned on.

You can securely submit your image(s) to my Dropbox using the link below. Please be sure to send me a note to let me know you sent something.
Dropbox File Request


Done. You’ll see an .rtf file with a few notes. I verified that the issue was present on 15.0 and tied to upscaling the image at 200%.


Thanks Bill. I’ll bring this issue up with my team. I was able to reproduce it.

Thanks! Could you follow up if/when there is a resolution?

Take care,