Images are located in modules/ps_imageslider/images/
Standard size of images is 1110 x 340 px
Scaled to 846 x 264 px or other dimensions related to screen width..
Testing whether the slider dimensions change upon loading differently scaled images
Result: No. The image aspect ratio as displayed is constant, independent of te image size or aspect ratio. Image will be scaled to fit.
Unable to place a relative URL to the image. It will be an absolute link, requiring maintenance of the same, in case anything changes (e.g. transfer from test system to live system).