How to maintain high image quality of still images

Hello,
I have been creating flipbooks out of still images shot on a canon MK II. They are 8 mp files and look great blown up large in photoshop, however, once imported into iMovie through iPhoto and played as a sequence in rapid succession they seem to lose quality. They appear slightly compressed or otherwise a little pixelated. A get info on an individual frame says it is is less than 200 KB when the original file is 3 mb. Is there a setting I am missing or other technique for maintaining the images' high quality after being brought into this rapid slideshow? Should I be using final cut to achieve this type of high quality?
thanks!

The following works well. Save your images in photoshop as TIFF files, with a resolution of 1920 x 1080, 72 pixels per. Save to the desktop. Drag into imovie. Make sure your imovie is hd 1080i. Use the Ken Burns to expand the picture to fill the black spaces, if you so desire.
At that point, you'll have a super high def show.
Hope this helps.

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pickera2
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How to maintain high image quality of still images

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