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Message: <blockquote data-quote="Jaff" data-source="post: 1433462" data-attributes="member: 42340">I've deliberately tried to avoid this '400mm zoom v 400mm prime sharpness debate' but I'm sick of seeing it over and over so here they are..... two shots..... two lenses..... and identical settings with both being unprocessed 100% crops shot in RAW and cropped down the same way as best as I can. Not identical I know but I'm sure you'll appreciate the difficulty in working with such awkward and un-cooperative models, not to mention the ever changing light.Still. I think you'll find it's a fair comparison and I've left the EXIF in for you to find out which is which. My final note is that whichever lens you want IMO should come down simply to your style of photography. Both have pros and cons but if you consider carefully what subjects you shoot, where you typically shoot them and the shots you like taking then you should be able to work out which lens is the right one for you (generalisation for anyone looking at either of these two lenses).Cheers everyone. B <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /></blockquote>