Hi guys need some advice. I have upgraded to poser 13 from poser 12 and I'm having a problem I can't sort.

When rendering a scene using a background picture there is a plain strip either side of the render. I have tried to match background picture size to render size tried different image formats and different size images and nothing is working.  Where am I  going wrong.  Any help appreciated.  Did not have this problem with poser 12.

Thanks in advance.  Donna.🙂

Not sure what you are trying to do but one solution could be to render using the transparent option, and then to assemble the result in any classic picture manipulation program.
If you're going this way: don't forget to hide any surrounding sphere, export it as PNG they keep the transparency

I'm trying to use a sky background image in my render but no matter what render size I set it to, there are still white edges with the sky in the middle of the render.

I would suggest posting a screencap of the problem so we can visualize what is happening.

Two things may cause this. First is the background picture need's to be set to Auto-Fit. That's in the material room ...

Select the background Object and then check that box.

If you still get bars on the edges the aspect ratio of your scene needs to match the aspect of the background picture. From the top menu choose Render > Render Dimensions. Set at to Render to exact dimension and type in an a size that's the same as the aspect ration as your back ground.

It doesn't need to be the exact size of the background but just the same aspect. So if the original was 4096 x 2048 you can use 2048 x 1024.

The scene preview may still show blanking bars but when you render the image it will render with no blanking bars.