PPTView test harness
Open project in VS 2010 and hit "Load" it will load the a.ppt and a.pptx in the bin folder. Sizes are listed at the top and images are shown.
NOTE:
1) ppt is 8x the size of the pptx per the SlideSize values.
2) the images come out the same size.
Reproduction
1) Open MS PowerPoint 2010 create PPTX, save it.
2) Open PPTX, save as PPT.
(you now have a PPT and PPTX I am using a.ppt and a.pptx in my example app)
If you open those documents with the Aspose.Slides classes you will notice that the SlideSize of the PPT (height and width) are fully 8x the size of the PPTX (if this is a documented fact I have missed it)
But if you pull out images of each slide you will note they are of the same size.
Am I missing something in the documentation? If so please link.
Is this expected behavior?