All the pictures I create are created quite large, i.e.

 

1: The Document resolutions is set to 1280X960

2: The Document Aspect ratio is set to 4X3

3: AntiAliasing is set to Superfine.

4: The Render Resolution 1: 3.00 3840X2880

5: Render options are set as follows:

A: Quality mode will vary from 36 to 64 Rays per pixels. (Depending on project)

B:  All other setting are at defaults value except for Optimization which is set to aggressive and Post processing set to 48 bit dithering.   

 

All said in done you should have more then enough data to get a tack sharp render at sizes over 36” at 72 DPI.

Now the trick is to convince the printers that this will be the end results is quite another story.

I know that this method works because I’ve tried this at work with excellent results.

The bottom line is that you need a computer that can render at a fast enough rate to make RTD usable.

 

David