Not saving after uscaling when using as plugin

When invoicing Photo AI from On1 as plugin, everything works nicely, until I try to save the result. The saving just hangs, no error message.

When upscaling as a stand alone application, I get strange square patterns in the dark, rather monochrome, background.

Therefore, all of a sudden, the much appreciated upscale function has become useless to me.

Please help

Steps to reproduce issue:

  1. Step 1
  2. Step 2
  3. Step 3

Topaz Photo AI [v1.x.x] on [Windows/Mac]

You cannot invoke PAI as a plug-in if you are upscaling an image. This has always been the case. And, if you think about it, it makes sense. You would be returning the upscaled image to PhotoRaw as a layer, but the layer is a different size than the original so cannot be overlayed!
Regarding the tiling, or whatever it is, please post an image. Also please give details of your OS, version, GPU etc.
As a PhotoRaw user myself, I have not noticed any issues when using PAI as a standalone and upscaling an image, but it’s possible I have not selected the kind of images that would produce this result.
You are welcome to upload an image that produces such a result via WeTransfer, DropBox etc., so others can see if they can duplicate it.

Hi Ray
Thank you. The explanation re upscaling makes sense. And I only tried that because of the „tiling“ issue, which seemed to be avoided in this manner, according to the preview in Topaz AI.

However, I most note that the user interface is misleading regarding the non functioning of upscaling. For cropping, it clearly states that it is not available when working as a plugin. On the other hand, upscaling is even automatically applied, when the base layer is cropped by a considerable amount, resulting in a low resolution. Only when saving, a problem appears, again, without any error message or hint, as described. But OK, this is understood.

Regarding „tiling“: Will upload sample image asap, and notify when done.

Thomas Meili

Dear Ray

Re „tiling“, please find an example dng


Sample Tiling


](WeTransfer - Send Large Files & Share Photos Online - Up to 2GB Free)

(Bad picture, I must admit).
I used the lastest version (1.4.1) for this, and applied some minor tonal edits.

Indeed, such a pattern is only visible in certain circumstances, in particular in a comparatively dark and monochrome background, and after cropping heavily. It almost looks as though this is the square pixel pattern of the Fujifilm X-Trans Sensor. I wonder whether upscaling has the effect of enhancing / reinforcing that pattern, by adding pixels accordingly.

Best regards,


I have to say I can’t see any tiling when I view your edited image in On1 PhotoRaw 2023.5. Just a few artefacts in the sky around the bird — and to me the image looks underexposed.
Mac Mini M1 16GB Ventura 13.5

If you are on Windows, are your GPU drivers up to date?

Dear Ray
Thank you for your reply,

Sorry, forgot to mention my rig; MacBook Pro Mi, latest OS.
Artefacts around the bird: Probably sloppy masking. Underexposed: Yes, you can say that, That has to do with using the Dynamic Range setting of the camera with the aim of better avoiding burnt out parts of the image.
Of course, you then have to lift the darker parts of the image in post. And I now realise that the (necessary) edit has been omitted the uploading the dng file to web transfer
But in your edit, don’t you see the horizontal and vertical somewhat darker lines in the sky, resulting in square shapes?

I have attached another picture, now exported from On1 with the edits.
(by mistake, the shutter speed was too slow, no need to criticise that).

In this picture, the effect is less prominent. But again, you should be able to see those lines in the sky when you krank up the magnification to 200% and more.

Regards, Thomas
Thomas Meili

@morusth - As On1 Photo RAW emulates plugins, as PS does, do not use Plugin mode if you want to upsize. Instead of using the Filters entry in Develop mode choose “Send to” whilst you are in Browse:

Select the file format to pass to Photo AI, do NOT select PSD as Photo AI cannot process it. I recommend TIFF but you can also use JPEG or PNG. Then it will save back to ON1.

Yes, this time I can see the grid pattern. But don’t forget, what I am seeing is just a screen shot.
Last time you uploaded your processed file. Maybe you should WeTransfer your original raw file prior to editing in either On1 or TPAI. I’d then be happy to see if the result duplicates on my system as well!
Don’t worry, my bird shots have never been great (I am not a specialist but have bought a 70-400 zoom lens for use in future)
I processed some similar shots of a bird against a blue sky from the Pantanal a few years ago, and cropped them closely and edited using On1 and maybe one of the Topaz products from back then.
Later today or tomorrow I will root one out and see if TPAI produces a similar grid. They were shot on a Sony A2300.

Dear Ray
Thanks for the reply. Besides’ I am using a Tampon 150-500 mm lens.
But the C-AF of my camera sucks for Birds in Flight, no subject recognition (except for human faces and eyes), hence low hit rate. But still some hits.

Attached is the original RAF of the second picture, which will be shown in an „underexposed“ way by the editor.

DSCF2268.RAF (24.8 MB)

Dear Ray

And remember: This „pattern“ effect only appears if I heavily crop in TAI, and then apply „enhance“ as proposed by the TAI Autopilot.

Therefore, my question relates to the enhance function which I started to appreciate a lot for this kind of images, where heavy crop is needed.

Thomas Meili

Thanks for sending the image. You seem to have similar problems to me when trying to shoot birds in flight! I too find it difficult to get the AF to lock on to them. Maybe I need to get a newer camera!

Is there actually an “enhance” mode in the latest version of TPAI? I can’t see it.

Anyway, I upscaled your image x4, modified the subject and applied strong sharpening but at its lowest level. I could have got the tips of the wings sharper by using the motion blur mode but that introduced artefacts. I tinkered with the upscale settings and I think I eventually chose the low resolution mode.
I used TPAI as a standalone and when viewed back in On1PR this is the result. There is no grid patterning in the sky.

Over to you.

Oh, and notice that the edited image is several stops darker than the original. That appears to be a TPAI bug.

I see you did more editing of the bird than I did and got a decent result.
I have just tried to edit my final image in On1 and it crashed. I have no idea why.
I then opened again and when I switched to edit mode, I was unable to get the image to fit the screen correctly. I am going to report this to On1.

Thank you for the hints


Thomas Meili

Have you also had issues with this image back in On1? I have submitted a Tech Support request to them.

A quick follow-up: On1 have confirmed that the zoomed image is a known bug and will be fixed in a future update.

Dear Ray
In the attached JPEG-Export, you can see the pattern very prominently in the low wing, after considerable lifting of the shadows.
The pattern is also present in the sky, though less prominent
For comparison, I have also attached a JPEG after denoising in TAI and otherwise applying the same edits

, but without upscaling.As you can see, in the non-upscaled picture, no such pattern is visible.

I am looking forward to hearing from you on this

Best regards,

Thomas Meili

Hi Thomas
I can certainly see the tiling on the wing.
However, since I don’t see squares on either of the original images you sent me, I suspect it might be to do with your OS. If you are on Windows, are your drivers up to date?
You are welcome to send the original of the above photo as well, and I am happy to make a third attempt to duplicate the issue. You also need to say what your workflow is.

The grid/tile artifacts is a know issue with Raw Remove Noise and Upscaling.

We are working on a solution for this. In the meanwhile, a workaround is to:

  1. Use Raw Remove Noise OR Enhance Resolution instead of both at the same time.
  2. Process with Raw Remove Noise, convert the DNG to non-RAW, process a second time with Enhance Resolution.

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