Automatic focussing binoculars

To: "canberra birds" <>
Subject: Automatic focussing binoculars
From: "Sharon Rusk" <>
Date: Thu, 6 Aug 2009 22:16:42 +1000
Hi! John.
 I have a pair of Nikon 7x50 Marine Binos which I believe are much the same thing. I used these when I first started twitching and because of their huge depth of  field are great from say 20 mts to 80 mts when set on O without focusing .  They do need re-focusing for anything further or closer requiring them to be set on + or - , the near focus on mine at least being app 8 mts away which isn't good in the bush.  I should add that these are getting long in the tooth and more modern sets maybe more suitable so it would be well worth finding out the specifications of these. I should mention that these were quite weighty also. 
Bob                                                       Original Message -----
To: ; m("","canberrabirds");">'Canberrabirds'
Sent: Thursday, August 06, 2009 9:37 PM
Subject: RE: [canberrabirds] Automatic focussing binoculars

Might be all right for waterbirds and birds in flight (though both of those are generally far enough away that focus is not a problem), but for use in the bush, where you?re frequently peering through foliage at a bird, I can see autofucus being a distinct disadvantage.


I reckon image stabilisation might be a more useful feature.




From: John Layton [
Sent: Thursday, 6 August 2009 5:39 PM
To: Canberrabirds
Subject: [canberrabirds] Automatic focussing binoculars


 Could someone give me an opinion about automatic focussing binoculars, please. Do they literally focus automatically? Are they heavier than manually focussing binos? Are they worth what I believe would be a fairly high price? Other disadvantages?


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