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Message: <blockquote data-quote="KorHaan" data-source="post: 2039908" data-attributes="member: 49910">Hello folks,I'm a little late in tuning in on here, but I wanted to see for myself today if my 18x50 IS's showed increased sharpness with IS on, after a night's sleep on their belly.Indeed did I see a difference in the field today; sharpness with IS engaged is significantly better than before, but also the IS mechanism is more responsive when engaged for the first time. I used to do some "on" and "off" clicking of the button, to allow the system to "warm up", so to speak, but to my surprise this has not been necessary today.I counteracted the earlier experienced slight blurriness during IS-active observing by tweaking the diopter scale and was never quite satisfied with the result. Today I've found out that the dioptersetting "zero" is actually the best setting, not surprisingly since I wear glasses.This is a strange fenomenon, but it's there.As it is not described in the Canon manual, my thoughts are that Canon technicians have only just now discovered this anomaly for themselves.Storing the bins in a new manner is certainly adviced, but I wonder how the bins are being influenced when they are around the neck on a strap?The vertical position in which the bins are for several hours in the field, or even longer, may have its influence, too. I've not yet ordered the SunSniper camerastrap, but it will not be before too long that I will be using this strap. It's very fortunate the bigger Canons at least have a 1/4" screw thread underneath, where the SunSniper screws in and  keeps the bins upside-down, resting on the hip.Maybe other readers might come up with further suggestions.I'm enjoying using my 18x50's very much.I'd like to thank the original poster Dave for making this discovery, well done!Best regards,Ronald</blockquote>

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