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Message: <blockquote data-quote="Kevin Purcell" data-source="post: 1524246" data-attributes="member: 68323">It varies from bin to bin but depends upon how sharp the knife edge of the roof prism is made. The sharper the smaller the visible spike (and the less easy it is to see the roof edge through the objectives.You see it more in cheap bins (weaker tolerances) and less in more expensive bins (my Zeiss don't have this issue).In "normal" use it's reducing the contrast a little (each bright spot is smeared a little with a spike across the whole image) but often not enough to be noticed.And as the warranty of the Swift applies only to the first owner I don't see Swift fixing this <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" /></blockquote>