Thanks Morten for the explanation. I'm very glad that you have untediously replied in these series of orthographic issues.

but can you reconsider placing.. let's say an Elevation effect that only works in still rendering.
Consider this :
- elevations are used only in still rendering/photo and not in animation/movie
you said that the errors goes to ocean, spotlight, reflections, fog and...
So when user use the effect, consider this :
- set that when user use the effect the camera will automatically transform itself to the ground level (elevation view) and cannot be rotated to simulate inclined orthographic view (the user can still horizontally orbit the scene though to set his building elevation angle). So the effect will lock the result image to elevation view hence there will be no ocean and water appeared.

- set the sun elevation to be automatically turned to day light (and if user add the Sun effect it will locked to only simulate the sun during the day). Typical elevation renderings for architects will always be around the bright sunlight... So there is no need to have spotlight and its shadows

- if the user use a fog effect, disable it! since for a standard elevation rendering of buildings fog will only make the buildings unpresentable to the client.

- reflection in the other hand will be tricky.. can you alter the reflection of all window glass to have a different reflection map instead of realistically accurate reflection? The client will end up confused if he sees an elevation print out of building's window glass that reflects all objects around it.. the realistic reflection will only distorts the building look. Coz in elevation rendering the goal is to make the glass material looked like a glass, not so much to be like the "actual" glass.
- please add a near clip plane effect to be included in the settings tab so that it can clip any front facing terrain that is blocking the intended elevation view.
- can you add a profile line slider to set the appearance / width of a profile line that surrounds the edges of the buildings against the backdrop/background. It'll add an "elevation style technique" impression that architects have been using it years since the absent computer aided design. :

so consider this effect to be similar with the effects inside the Artistic Effect tab, altering the colors and look of the view for the need of an elevation look rendering.
Any changes to the actual realistic look are permitted since the "presentation" result is more important than the realistic one.
Thnks, and hope there are more suggestions in this topic.
