I think what's happening is that it clips the orthophoto but then writes it to a single raster anyway. If you have the option to group by e.g. a polygon id that might do the trick but I'm not familiar with Sketchup myself so I'm not sure of the details.

Hello #redgeographics.

Thanks for a hint on where to go. As an output it doesn't neccesary have to be sketchup. I'll check idéa of group by polygon ID. Do you refer next step of testing which poly ID has got a ortho raster or similar test? Do you also think the result should end up to have as many rasters as there are shape boundaries, instead of perhaps just one raster feature?

It depends on what you want really, if you want to write it to a single raster I'd try using a RasterMosaicker first, which should give you some more control over what to do with the areas outside the polygons.

As for testing whether or not there is a raster, do you think it's likely that some polygons will not overlap your original raster?

Okey thanks, will check RasterMosaicker and see how it goes.

...hard to say whether polygons will or not overlap. Guess there will always be a scenario for both events.