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Message: <blockquote data-quote="Julian" data-source="post: 1724392" data-attributes="member: 21416">ChrisNice shot of the Barn Owl. I think there may be a little outward humour going on in this thread. Ignore it and please keep posting feedback on the new eos mk 4 . You have a lot of experience of bird photography and we do really want to see how it measures up.  What would you say are the advantages over the 1dmk 3? Could you be precise? How do you see it comparing with say a 40d (like I have and probably will upgrade from at some stage)? Is the a-f system literally miles/much better? What about spot metering? How accurate is that centre sensor?I am tempted buy the 7D but a lot of the images published are 'grainy'. I don't mind grain and yes it can be dealt with in pp but I was wondering whether the effect is because people are getting every drop of exposure out of their camera's to be able to 'compete' under difficult/dull conditions and hence are cranking up iso or something? Or is it a function of sensor density? or a combination of the two? or something else. Is it me being spooked by talk of things like " why are Canon continuing to up megapixels' at the expense of cleaner images"?Keep 'em coming and have a great briding weekendPS Had a snipe in Holywells Park Ipswich yesterday. Too quick to capture image but a nice one. Also first two butterflies. Peacock then male Brimstone.Julian</blockquote>