Hi,
I tried this new workflow in the new 1.0.2.2810 release and it’s not working for me.
I have a set of JPEGs and identically named EXRs in the same folder. I’m importing the JPEGs and use them for processing.
The EXRs are showing up as the second layer in the export dialog (see screenshot), everything looks great, but then I’m getting the error “Feature not implemented”. Same thing if I try to export 16bit TIFFs using the second layer instead of EXRs.
(Apologies for hijacking your thread Malcolm, I believe we are after the same thing so I hope it’s okay 
)
// Simon