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Message: <blockquote data-quote="doug el10x32" data-source="post: 3220979" data-attributes="member: 56662">Hi 6130rm,I had noticed a similar situation with my 8x42 Zeiss Victory HT's.  Looking at high contrast lettering on sign posts etc showed slightly more 'clear/sharper' images at about 25%+ away from centre.  Increasing the IPD by approximately 1/2+ mm from where I had originally set it up, 'increased clarity returned' to the centre and remained so towards the edges of the field of view.  Viewing more natural objects also benefitted from this wider IPD and so I left the IPD at this slightly wider position and everything is great.  Make sure that it is not so wide that it begins to show the shadows at the edges.  I believe that some binoculars may be quite sensitive to the the IDP position.Doug..........</blockquote>