How to remove background HDR of rendered image

[nightday]

hello blender artists

i am using hdr for world environment texture, i would like to remove background HDR of rendered image ; i already check Transparent under render tab and save it as png images , but it is not working, no idea why…:spin:, i am using blenderv2.78

thanks!

[FreeAccess (A picture is worth 1000 words)]

Hello,

May be . .

Go to WORLD panel > Ray Visibilty > uncheck [Camera] :o

[nightday]

hello
check Transparent , select png , rgba under render tab is working, but when i use plane as background, the rendered images is not Transparent anymore. anyone know how to remove this plane mesh as background of rendered image? thanks:)

[Photox (Tim Gregory)]

FreeAccess does correctly tell you how to remove the hdri from camera rays, for an image plane to keep secondary bounces, but not have it render directly, uncheck ‘camera’ rays under object, cycles settings.

[nightday]

thanks Photox, i know that, but i also want to remove the background of my rendered image, the background is the plane mesh (not from hdri )

[Photox (Tim Gregory)]

For hdri you go to world tab and uncheck ‘camera’
for a plane you go to the object tab and uncheck ‘camera’

[nightday]