Chroimatic Abberation issure on big images

[TIWO Design]

Hi,

as soon i activate chromatic abberation on big images (here 6K), i got a pretty lowres image with no antialiasing.
When i deactive it, the image looks normal but without CA.

2K looks ok...

Any suggestions or solutions?

Best Timo ✌

[hermit.crab]

Strange. It doesn't seem to happen in a simple scene. Could you send both the 6k and 2k exrs (so that the layer tree is saved) so we can troubleshoot?

[TIWO Design]

I tried also a simple scene - only Torusknot + HDRI... get steps as well or should it look like this?
Looks wrong to me without anialaising...

[hermit.crab]

The Chromatic Aberration effect follows what's rendered in the scene. So, if there's bad AA, it is inherent in the scene. What kind of Image Filter (Render Setup > V-Ray > Image filter) are you using? Can you attach the torus scene here?

[TIWO Design]

I use the default settings:

Type: VRayLanczoFilter
Size: 2,0
Adaptive clamp: 1,5

Here you can donwload the scene: https://www.dropbox.com/t/pcUvtDUqkQqTGFL6

[hermit.crab]

Thank you. I managed to reproduce it (the image resolution had to be even larger). I've logged the issue (internal bug-tracker id: VMAX-14662) for dev investigation.

[TIWO Design]

Thx m8!

[hermit.crab]

For now, disable the "Hardware Accelerated" option in the Lens Effects settings. This should yield correct results.

[TIWO Design]

Oh cool - will test it later... thx for the information!

... Yeah - it works!

Btw. is it possible to get the CA as a renderelement?

[hermit.crab]

Btw. is it possible to get the CA as a renderelement?

Not directly. You could always subtract the RGB from the effectsResult channel, however, there will probably be some noise leftover.