Trees-24.png  891KB

Trees-8-128-dithered.png  230KB

TreesHigh.jpg 166KB

TreesMed.jpg  82KB

TreesLow.jpg   51KB

Trees128-dithered.gif  253KB

Trees128-no-dither.gif   241KB

Trees64-dithered.gif 195KB

Trees64-no-dither.gif 182KB

Trees-restrictive.gif 139KB

Trees32-dithered.gif  139KB     

      

Trees32-no-dither.gif 126KB 

For the highest quality of the photograph of trees I think the file saved under the preset PNG-24 or under JPG-high is best. The smallest file size is the JPG in the lowest quality and it does not look that bad. The photo saved under the medium quality JPG is good quality and it is 82 KB so it is a good balance of size and quality.