Z-Depth Problem

[agentorange_cg]

Trying to add a z-depth channel for use in photoshop and keep coming up with this effect - z-depth clamp is ticked so don't understand why this is happening

[andybot_cg]

what format are you saving your render?

[agentorange_cg]

As a jpeg is this the problem?
The rendered image is a jpeg and so is the VFB channel

Not using a physical camera but an hdr image for the GI

[andybot_cg]

sorry, don't know. I've seen something similar with vray raw image, but don't think it's a format issue if it's a JPG. My only other thought is if you are using distributed rendering, some of the buckets might not be processing correctly.

[agentorange_cg]

I'm not using distributed rendering, but I'm going to try another scene/model and see if it still does it if it does I'll reload Vray and keep trying - cheers for your input

[peerman]

I also come across this same problem. One thing I found is that if I use the lens shift, these strange blocks appear and when I set it to zero (ie. not correct the perspective) they disappear. Maybe it only works here and in certain situations, but it could work for you to? Good luck!

[agentorange_cg]

Still no joy with this problem - reloaded Vray and not using lens shift - but still getting the square blocks - just not getting along with vray at the moment on a mac - seems to be having a lot of problems - ah well onwards and upwards as they say

[peerman]

I also did some more tests, and indeed my suggestion doesn't work always. It's very unstable

[andybot_cg]

do you have a sample file you can share?

[agentorange_cg]

The model I'm rendering is 45meg but I'll strip it down and see if I can decrease the size - any tips on doing this? Does it make any difference in size if I 'join' separate elements together?

[andybot_cg]

Yeah, see how much you can delete while the file still produces the error. It's actually useful troubleshooting sometimes - you can find a bad image or geometry as you start to whittle down the file.