Totally black render

[Dune]

Happened to me for the first time, but how can it be; crop renders ok, but larger crop is totally black 

[Tangled-Universe]

That's weird!

Do you use multiple render nodes (or cameras)? If so, has one disconnected from the render camera somehow?

With such vague/weird issues then first the most stupid questions need to be asked

[Dune]

Found it, but it puzzled me greatly, because at first it looked right in the preview, but the render was black. Small crop was ok, big crop black. Second time I looked (an hour later, after a good dinner, the preview was also black). It's caused by the node called green algae, and perhaps its breakup PF. Strange though. Just masked color with 0.3 coverage.

[Kadri]

Are you sure Ulco?
I had mostly problems with transparency in some kind .
You have a transparency node there too.
In another thread here on the forum only moving the transparency node in another place made a difference for example.

[Tangled-Universe]

That's rather curious as I can't see an obvious mistake at first sight...

[Dune]

Well, it's solved, so I don't bother anymore.

[N810]

Did you disconnect the sun ? 

[yossam]

I have had this before and couldn't figure out what it was. 

[Dune]

Not the sun. The only thing I did was take out the green algae shader. It was in there that something went wrong. A mystery.

[bla bla 2]

Tu n'as pas ajouter un autre render 01 ? Et, oublier de faire 'return' ?

You do not have to add another 01 render? And forget to do 'return'?

[Dune]

No, that wasn't it, but thanks for thinking along, Bastien.