planetmalc
super member
Reged: 10/21/09
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Re: Need advice on mechanical quality of zoom binos
[Re: EdZ]
#5644306 - 01/26/13 12:21 PM
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Instruments like this HAVE been produced commercially: I went to the London Astronomy Show a few years ago and one of the Russian companies - Intes, maybe - had produced a pair of 6" Maksutovs with Porro 1 prism/eyepiece units for in-line viewing. They gave a very sharp image.
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CuriousOne
member
Reged: 01/22/13
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Re: Need advice on mechanical quality of zoom binos
[Re: EdZ]
#5644332 - 01/26/13 12:42 PM
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Actual size is about 20mm x 6mm.
Power unknown, since this is homemade binocular.
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EdZ
Professor EdZ
Reged: 02/15/02
Loc: Cumberland, R I , USA42N71.4W
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Re: Need advice on mechanical quality of zoom binos
[Re: CuriousOne]
#5644516 - 01/26/13 02:35 PM
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Quote:
Actual size is about 20mm x 6mm.
Power unknown, since this is homemade binocular.
Which letter the W?
that would be appropriate for testing a 10x to 12x binocular at that distance. Any higher magnification than that and those letters would not be small enough to test the resolution of the poweer being used.
edz
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Simon S
Carpal Tunnel
Reged: 01/07/07
Loc: Crawley West Sussex UK
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Re: Need advice on mechanical quality of zoom binos
[Re: EdZ]
#5644640 - 01/26/13 03:55 PM
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You will find none of the High end binocular manufacturers selling zoom binoculars, although Nikon ans a few others do sell a zoom to cater for public demand.
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SMark
professor emeritus
Reged: 08/29/11
Loc: Atlanta, GA USA
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Re: Need advice on mechanical quality of zoom binos
[Re: Simon S]
#5644992 - 01/26/13 07:41 PM
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You will find none of the High end binocular manufacturers selling zoom binoculars, although Nikon ans a few others do sell a zoom to cater for public demand.
Has anyone here actually tried either of the Nikon Action Zooms?
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GlennLeDrew
Postmaster
Reged: 06/18/08
Loc: Ottawa, Ontario, Canada
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Re: Need advice on mechanical quality of zoom binos
[Re: SMark]
#5645076 - 01/26/13 08:25 PM
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Fellas,
It's been established already that the word 'zoom' in the title actually should have been 'high magnification'. What we know of as a zoom bino is not what is being sought.
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stormbird
journeyman
Reged: 04/28/04
Loc: Western Idaho
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Re: Need advice on mechanical quality of zoom binos
[Re: Jae]
#5657549 - 02/02/13 03:21 AM
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I have the Nikon 8-16x40 XL binoculars. Sharp as any binos I have ever owned (30+). They are much smaller than your requirement, but very handy. At 8x the fov is fairly tight, but better at 12-16x. My 2 cents.
Quote:
Probably off topic from original poster of large zooms but.....
I always heard that the one zoom exception is the 8-16x40 XL Nikon zoom. So when I checked one out, I personally found that it was certainly usable and sometimes convenient.
But it's costly and nowhere to be found....
Jae
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CuriousOne
member
Reged: 01/22/13
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Re: Need advice on mechanical quality of zoom binos
[Re: stormbird]
#5657602 - 02/02/13 05:49 AM
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Specs are fine, but instead 8-16x40 I'd prefer 16-32x80 
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Rich V.
Post Laureate
Reged: 01/02/05
Loc: Lake Tahoe area, Nevada, USA
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Re: Need advice on mechanical quality of zoom binos
[Re: CuriousOne]
#5658256 - 02/02/13 02:18 PM
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The above now discontinued Nikon zoom is the only zoom binocular that I've ever heard positive reports about.
I'm sure BillC has had some of those pass through his hands over the years; he could tell us if there's anything to it or whether it's just the luck of the draw for those owners. I'd trust Nikon to do a better job of it than some of the other suppliers we've been discussing...
Rich
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Sean Puett
Carpal Tunnel
Reged: 09/06/10
Loc: always cloudy, washington
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Re: Need advice on mechanical quality of zoom binos
[Re: Rich V.]
#5661286 - 02/04/13 08:41 AM
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I had some of the Zhumell zoom 10-30x50 binoculars. They were pretty good for daytime use if you are not overly critical. They were only $50 new so you need to factor that in. Night time use was another matter. They weren't perfectly collimated so that was part of the issue. Then when you zoom, it made collimation errors worse.
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CuriousOne
member
Reged: 01/22/13
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Re: Need advice on mechanical quality of zoom binos
[Re: Sean Puett]
#5670897 - 02/09/13 03:11 PM
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Tomorrow, I'll post a series of photos, which shows what I was questioning about, and what I got as answer
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SMark
professor emeritus
Reged: 08/29/11
Loc: Atlanta, GA USA
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Re: Need advice on mechanical quality of zoom binos
[Re: Simon S]
#5707894 - 03/01/13 10:15 PM
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Quote:
You will find none of the High end binocular manufacturers selling zoom binoculars, although Nikon ans a few others do sell a zoom to cater for public demand.
This one REALLY caught me by surprise...
A Fujinon Zoom... Really?
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hallelujah
Post Laureate
Reged: 07/14/06
Loc: Colorado Rocky Mountains
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Re: Need advice on mechanical quality of zoom binos
[Re: SMark]
#5708024 - 03/02/13 12:31 AM
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http://www.ebay.com/itm/BUSHNELL-POWER-VIEW-BINOCULAR-7-15X-ZOOM-PRISM-SYSTEM...
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