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Message: <blockquote data-quote="Hermann" data-source="post: 1519634" data-attributes="member: 4925">Nice summary. I'd go even further than that: There are situations, where even higher magnifications can be useful to see fine detail. Sure, even with a very good terrestrial scope exit pupils below 1mm won't actually have more detail, but it's sometimes easier to see. "Sometimes" because it depends on many factors, including how tired you are. I've used very high magnifications with various scopes on quite a few occasions over the years to get an ID, and it works quite well for me, even though the image quality isn't great at high magnifications. I usually use a booster to achieve high magnifications, and I used the Leica Apo 77 at magnifications of over 100x, the Nikon ED 60 at magnifications up to 80x and the little ED 50 at about 60x. It doesn't always work - some birds are just too far away <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /> - but it sometimes does. Hermann</blockquote>