legoboyvdlp wrote in Sun Oct 04, 2015 8:50 pm:... is it legal to have a GPL picture of something non-GPL?
Yep, unless a software's license says otherwise. The GPL do not care how the software is used though.
Using screenshots and disregard the license the "photographer" chose to publish them under is pretty much the same as theft though.
Side note:
A bit of an issue regarding screenshots uploaded to the wiki without the uploader specifying a license is that they can be assumed to implicitly have the license of the rest of the content on the wiki. That would mean the GPLv2 license, whatever that means for screeshots. It is really not a license suitable for artwork. The biggest issue is probably how one would define "source code" in an artwork context.* While the "source code" could most probably be regarded as a *.blend file for a rendering from Blender, or an *.svg file for a raster image exported from Inkscape, what would it be for a screenshot, photo or drawing?
* See http://www.gnu.org/licenses/license-lis ... erLicenses