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Message: <blockquote data-quote="tdodd" data-source="post: 1565107" data-attributes="member: 55450">Here's a real life "in the field" example of an egret I shot today with my 50D + 100-400 + Kenko 1.4X at 560mm, 1/400, f/8 (wide open), 100 ISO.Original frame (896mm equivalent angle of view)....<img src="http://lh4.ggpht.com/_4_R8TkwT74w/SpFmraA5nxI/AAAAAAABJsU/cKOBoNf4xWo/s800/20090823_110911_2480_LR-1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />50% crop (2,661mm equivalent angle of view)....<img src="http://lh4.ggpht.com/_4_R8TkwT74w/SpFmsS8FtGI/AAAAAAABJsY/Lxw3C9fKVNI/s800/20090823_110911_2480_LR-2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />100% crop (5,322mm equivalent angle of view - now that's some reach!)<img src="http://lh4.ggpht.com/_4_R8TkwT74w/SpFmtMfuHhI/AAAAAAABJsc/rPkg8nTG86I/s800/20090823_110911_2480_LR-3.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />It is unfortunate that my glass exhibits some halation when used on the limit with high contrast subjects, as I think the camera would be capable of better results with some decent optics.</blockquote>