Bump.

Can you share the model?

First time navigating this, so I’m not sure if the link works: https://www.mecabricks.com/en/models/KZvm7ZBQ2G6

Ok, so I rendered your model using your existing camera location and settings on Mecabricks. This is what I got.

If you view the render at 100% resolution, it doesn't look pixelated to me. When you zoom in though, it does get pixelated and shows some noise, so I'm wondering what issue you are having.

Issue A: Visible noise. The top image was rendered in Blender 3.1 at 1000x600px using 200 samples, the same HDRI from MB and Open Image Denoise (OID) on Blender's default settings. The bottom was rendered on MB with your settings. Then I zoomed in about 4x on the image.

I'm not sure why, but there is considerably less noise in the top image than in the bottom image. I'm guessing it comes down to the idea that I'm using a more recent version of Blender, which is using a newer Cycles engine from the 2.xx versions and possibly a better denoise engine. However, that is conjecture. If you like the denoise results in the top image, you can switch to Blender.

Issue B: You want it to look like the top image, but it looks like the bottom one when zoomed in. Both of these images were rendered in Mecabricks. The top image used a 12.5º field of view as opposed to a 45º field of view on the bottom image. The bottom image was then blown up approximately 4x to match the top image.

If this is your issue, then you have a problem with pixel count. Essentially it's the difference between using a zoom lens vs digitally blowing up an image. The top image is 1000x600. The bottom image was cropped from the first one in the post. The crop area was roughly 250x150px and then zoomed in. It has 4 times fewer pixels vertically and 4 times fewer pixels horizontally. To this point, the top image has 16 times more pixels than the bottom. If you need to zoom in on an area, change your FOV in the camera to be smaller. If you want the entire picture to be sharper, then you need to increase your image size. (As a side note, if you zoom into the top image 4x, it will be the same quality as the bottom image.)

Hope this helps... if it doesn't let me know.

I didn’t know that zooming in on the final output vs decreasing FOV made such a big difference to the res…the images are tons clearer now, thanks for the help!

However, there’s still quite a lot of noise in the images - the only way to reduce this would be to switch to blender?

Or increase samples... possibly more light.