What version of Premiere Elements are you using and on what computer operating system is it running?
What are the pixel dimensions of your photos and how many of them are being used in the project? What is the format, jpeg or other?
What are you or the program setting as the project preset? If you do not know, please let us know the readings for
Editing Mode, Timebase, Frame Size, Pixel Aspect Ratio found under Edit Menu/Project Settings/General.
Let us start here and then decide what next.
Thanks for responding.
I have Premiere Elements 11 - operating system Windows 8.
File size of photo 9.9 mb
image size 2799 x 3500
Edit mode HD1080i
Frame size 1920 h 1080 v
Pixel aspect ratio 1.0
Hope this info helps?
Also, please confirm that you've rendered your timeline (by press the Enter key on your keyboard) after adding the photos to it.
Thanks for the additional information.
If rendering the Timeline content of those photos does not resolve the photo pixelation issue as per SG's question, then please read on.
a. Do you have a mixed Timeline of photos and video? If so, what is the format of the video and how many of these
2799 x 3500 photos are included? Do you get photo pixelation whether you have 1 or many of these photos on the Timeline?
b. What happens to the Edit area monitor view of one of these photos if you right click the Edit area monitor, select Playback Quality, and then compare the choices of Automatic vs Highest Quality? If you right click the Edit area monitor and select Magnification, do you find the Magnification set at the default "Fit"?
c. Have the photos been edited in Photoshop before being imported in Premiere Elements. If so, what was the extent of the Photoshop editing including effects applied and color profile?
More later depending on your results and follow up.
If this is an all photos project, I would suggest the project preset of the following in your case
Pending further information, the relationship of your problem to photos overized for the project settings is questionable.
With Premiere Elements 11 on Windows 7, 8, or 8.1 64 bit, I have used many photos with pixels dimension similar to yours on
the same Timeline and gotten excellent results from the point of view of system performance and clarity of viewed content in the
program or in the export.
The answers will be in the details.