Greetings. I purchased this fine scope to use in NRA High Power & Service Rifle Competition. I went with the 100 mm objective because I need to be able to CLEARLY see .30 cal. bullet holes at 300 yards without necessarily going to the maximum magnification. Talk about clear...when I tested the resolution on tree limbs at 300-350 yards distant from my position, I not only saw razor-sharp tree bark outline but razor-sharp leaves as well. In fact, the resolution is far better than any other scope I've ever looked through in this price range. These 48 year old pair of eyes were able to CLEARLY see ants and various other insects plying the branches 300 yards distant on max. power setting (67X). That's correct folks; clearly defined ants, flys, etc., @ 300 YARDS!...not semi-fuzzy little moving blurs. In fact, I was able to CLEARLY see them and identify them down to the 50X power setting. Color resolution is also excellent. Eye placement is critical when you go much beyond 45X but especially so ...
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We use our Celestron 100 Spotting Scope almost daily. It is so simple to set up and use that we don't hesitate to grab it to watch the redtail hawks or roadrunners in our back yard. We are leaving for an Alaskan adventure in a month, and this scope is going as a carry-on wherever we travel. We can't wait to use it for the wildlife in the tundra and for glacier viewing!