Reflection pass alpha

[JJJ]

Hello,
Is there any solution to have a reflection visible in the glass area on png file? Right now alpha channel cuts out background area. It would be really handy to have a reflection on the glass visible so I could place background picture underneath in postproduction (photoshop).

Please have a look at attached reflection pass file.

Thanks for your help.
J

[TomG]

The reflections would be available by adding a Reflection render pass, which should get you what you need.

[JJJ]

Tom, thanks for the reply.

I already have a reflection pass turned on in corona multipass settings.  What I get as the output from reflection pass is a png, but reflections are cut out in the area where there is an alpha background (I will paste window view in photoshop is postproduction therefore there is no background in cinema 4d).
Have a look at attached reflection pass in png.

[TomG]

Should be able to ignore the alpha embedded in a PNG (https://graphicdesign.stackexchange.com/questions/10816/how-to-remove-the-alpha-channel-in-a-photoshop-document). Other formats, such as EXR (32 bit is recommended for compositing together again in post) probably avoid that issue on opening in Photoshop too.

[JJJ]

thanks!

[TomG]

Most welcome!