Kevin Burns pan blurs panorama pics in slideshows

Question

There is a strange Effect when panning over Pictures in iPhoto slideshows. It works well when panning vertically over portrait orientated pictures, but fails when doing the same with Panorama pictures, i.e. produced with PanoramaMaker or else with a ratio like 1:4. These pictures are extremely blurred, depending on the picture ratio. The resolution has no effect, tried it with high-res and lower res pictures, so it can not be a memory problem.
It seems as iPhoto samples these pictures down to a virtual maximum width...
any experiences or ideas?

Answer 1

Wonderful pictures by the way.
Here's what happened:
1.)  I downloaded the project and opened it in premiere pro
2.)  First this box popped up:  
            "This project was last used with Mercury Playback Engine GPU Acceleration,
              which is not available on this system.  Mercury Playback Engine Software Only
              will be used."      Then I clicked ok.
3.) Secondly, this box popped up:
          "The editing mode used by this sequence could not be loaded.  The sequence will be opened in Desktop mode."
                                     Then I clicked ok.
4.) I finally got the project into ppro, when I tried to render ppro quit.
5.) I reopened ppro, tried to open the same project and this popped up:
          "FILE IMPORT FAILURE
                    PPRO_Image_Test.proj
              Error Message
                    File format not supported"
                                  Then I clicked ok.
6.) When the file opened in ppro, all the media was offline and I couldn't re link it.
At which point I stopped.