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Message: <blockquote data-quote="rocketman122" data-source="post: 159055" data-attributes="member: 14443"><p>wow, quick reply. yes, I understand that the focal length plays a role. meaning a 100mm lens on a FF, and to get the same DOF and perspective (to make both pictures from the cameras look the same) you would use a 75mm on a DX?  so if that parameter is the same then there is no difference with DOF between them? I understand there are much more than numbers of focal length here and different quality lenses but if the equivalent focal length is used on both then no difference, right? thank you.</p></blockquote><p></p>