Problem with render region

[zahir3d]

Hello all, I have a little problem with my last render, I have to render a big image and I use render region to do multiple renders, but when I go to photoshop to assemble all my render, I found little difference:


can u tell me what to do to avoid this problem
Thank you

[re:FORM]

Are you using a vrayPhysicalCamera with vignette on?

[zahir3d]

no her it's just the top vue, no camera

[re:FORM]

Hmm... sorry but I can't offer a solution.

Have you tried rendering without regions? Switch of the max virtual frame buffer. In the vray framebuffer settings, switch off the "Render to memory frame buffer" and use "render to V-Ray image file" instead. As far as I know this should work for large images.

[zahir3d]

if I do a simple render there is no difference, but here I must do multiple render region because my picture is to big, an it take a lot of time.
thank's

[percydaman]

try precalculating the irrad map for the entire image, then use render regions, loading the saved irradiance map to render.

[zahir3d]

ok percyman thank u,I think it will work like that

[Clifton Santiago]

Use render strips in backburner. With IR/QMC there is rarely any need to precalc.

[vlado]

It would be best to calculate any light cache or irradiance maps in advance, and then use the saved maps when you do the crop renders.

Best regards,
Vlado

[zahir3d]

it work !! thank you