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cycles: final render has worse aliasing than viewport
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Description

Hello, I noticed that when i compare the cycles viewport render to the final render of my scene, the viewport has less aliasing, and the final render has a really pixelated effect in every area of the image, this clears up when i zoom in, but the image is 6k, so it isn't a problem with being low resolution, also the pixel filter width is set to the lowest value. Is there any way to get the viewport quality in my final render? Do i need to check another setting for anti aliasing? i set the same number of samples for both viewport and final render, both use open image denoise set to accurate, with denoising albedo, and denoising normal. Everything seems identical, but the results are not, think i lack experience, and hopefully there is already a setting to fix this.
Here's an image showing the issue : https://drive.google.com/drive/folders/1XKsZMhvYFvHBb1vC7z835H1EOHO8iPMZ?usp=sharing

Event Timeline

Josiah (siahgil) changed the task status from Needs Triage to Needs Information from Developers.Jul 13 2022, 12:55 PM
Josiah (siahgil) created this task.

the final render has a really pixelated effect in every area of the image, this clears up when i zoom in, but the image is 6k, so it isn't a problem with being low resolution

This is the problem. The image viewer (which you're viewing the 6k image in) does not do proper downsampling and thus viewing the 6k image while zoomed out will actually end up with increased aliasing.
Saving the render result and viewing it in another program that does do downsampling should resolve the issue.

This is technically not a bug so this report should probably be closed. Unless I mis-understood the issue you're reporting.

also the pixel filter width is set to the lowest value

As a side note, setting this value really low will increase the chance of seeing aliasing in the final image when the image is viewed at a 1:1 scale.

This comment was removed by Josiah (siahgil).
Josiah (siahgil) closed this task as Archived.Jul 13 2022, 2:01 PM
This comment was removed by Josiah (siahgil).

Saving the render result and viewing it in another program that does do downsampling should resolve the issue.

thanks alot, you helped me out.