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Message: <blockquote data-quote="Kevin Purcell" data-source="post: 1562505" data-attributes="member: 68323">NDHunter you seem to be conflating two things in your post: edge sharpness and stray light at the edge of field.The wide FOV that trades off against astigmatism at the edge is part of design goal (just like Zeiss, for example, were these arguments have been hashed out before). You may not like that but that's just a design choice that doesn't match your compromises. If you idea of the best bin is sharp edge to edge then you need a different bin design.I find the stray light to not be an issue for me except in extreme circumstances. I do see it now and again (and commented don it in the past for the Chinese ED bins).On the stray light issue I have found that the stray light is worse if the eye is further away from ocular lens e.g. if you use glasses and they're further away from the eye. Alexis Powell also noticed this. The same is true without glasses. Do you have the eyecups all the way up? Try them one stop down? I'd you don't have ER problems then that will reduce the stray light problems. Is that better (for stray light)? I also find eye placement makes this an almost non-issue for me. Low eye placement makes the problem a lot worse.Then again if the bins don't match up to your ideal view then perhaps move on to the next one that's edge to edge sharp (though there aren't too many of those).</blockquote>