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Old Monday 29th April 2019, 18:37   #40
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Join Date: May 2012
Location: Sheffield
Posts: 9,007
Originally Posted by dries1 View Post
Maybe it is the age of the personnel/observer with the glass that determines the aperture.

Andy W.
Sure you are right Andy. Fact is 'developed countries's' populations are ageing and surviving due to medical advances. Older folks tend to want to carry less weight and also tend to be less committed to birding at the extremes of the day such as dawn and dusk. It is not rocket science to see why 32mm binos might increase in popularity and they are doing that in the UK if not elsewhere.

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