I love World Creator, especially the vegetation distribution pipeline. You can create some very realistic fields with it. Im going to check out impostors too - ive seen it a few times and wondered what it's about.
Stupid Rental. My Zbrush that I haven't paid for an update in years and is perpetual Trumps that on all counts.
SLiB Match 1.0 is a Maya plugin that mathematically calculates the camera viewpoint of a given background image and creates an oriented Maya camera that’s position and field of view perfectly match the perspective of the background image. This allows to place 3D objects inside your maya scene as if they were part of the background image.
Other features of SLiB Match:
- intuitive gui
- save / load vanishing line positions for later use
- create camera projection shader with a single click
- one-click texture baking [Redshift only]
Focal Length estimation will be incorrect if the center of the image is not on the camera’s viewing axis or if the image was cropped non-symmetric. In this case you have to adjusting the Focal Length by hand.
You can find more info on the tool and get it for $30 here.