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Old Sunday 22nd October 2017, 16:53   #1
ticl2184
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Binobooster

Does anyone know if it's possible to fit the 2x bino booster onto the Swarovision binoculars ...
I contacted Swarovski and they told me the thread is to small to fit the new SV''s. .
Does anyone know if there's a thread adaptor to allow me to use the booster on my SV''s. ...

Cheers Tim
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Old Sunday 22nd October 2017, 17:15   #2
jan van daalen
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Quote:
Originally Posted by ticl2184 View Post
Does anyone know if it's possible to fit the 2x bino booster onto the Swarovision binoculars ...
I contacted Swarovski and they told me the thread is to small to fit the new SV''s. .
Does anyone know if there's a thread adaptor to allow me to use the booster on my SV''s. ...

Cheers Tim
Hi Tim,

I've seen people who managed to use a separate eyecup as an adapter to fit both the booster as the new SV.

Jan.
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Old Sunday 22nd October 2017, 18:40   #3
ticl2184
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...Thanks Jan...
Separate eyecup?
What sort ...

Cheers Tim
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Old Tuesday 24th October 2017, 21:29   #4
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The 2x booster for the old EL and SLC models can be used on any binocular, so long as you can find a way to hold it centered behind the eyepiece (and ideally, without scratching the eyepiece). I suppose others have modified a spare screw-in eyecup to attach to the converter to accomplish such use. I sometimes use mine just by holding it in place. To work, the booster doesn't have to fit over the ocular such that the ocular is up inside the end of the booster, even though that is how it fits the old EL and SLC.

--AP
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Old Tuesday 24th October 2017, 21:47   #5
proudpapa56
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I believe the Opticron 2x UTA will work with some of the ELs with the correct connector ring.

F/U - I just tried the Opticron 40951 2x Adapter with 40941 connector ring on the EL 8.5x42 and 10x42 with good results.

Last edited by proudpapa56 : Tuesday 24th October 2017 at 21:57.
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Old Tuesday 24th October 2017, 22:49   #6
jan van daalen
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Quote:
Originally Posted by ticl2184 View Post
...Thanks Jan...
Separate eyecup?
What sort ...

Cheers Tim
Hi Tim,

Just the same as the genuine one and then you modify it to fit on the doubler.

Jan
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Old Wednesday 25th October 2017, 04:21   #7
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Jan, Proudpapa65,
Sorry this is still not too clear to me.
Do you mean a booster on each of the 2 eyepieces of a binocular?
If so have you had, or do you know of, collimation or eyestrain issues?
Any idea on which booster (say 2x) and adapter ring will fit a Nikon Monarch-5 12x42?
Thanks!
I would guess that, if there are no issues as above, a binocular of magnification m with two 2x boosters will show more detail than a mono scope of mag. 2xm, if there is no drastic drop in overall optical quality in the resultant setup.
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Old Wednesday 25th October 2017, 07:43   #8
jan van daalen
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Originally Posted by adhoc View Post
Jan, Proudpapa65,
Sorry this is still not too clear to me.
Do you mean a booster on each of the 2 eyepieces of a binocular?
If so have you had, or do you know of, collimation or eyestrain issues?
Any idea on which booster (say 2x) and adapter ring will fit a Nikon Monarch-5 12x42?
Thanks!
I would guess that, if there are no issues as above, a binocular of magnification m with two 2x boosters will show more detail than a mono scope of mag. 2xm, if there is no drastic drop in overall optical quality in the resultant setup.
Hi Adhoc,

Normally one uses the doubler as a mono on the binocular, however Swasrovski made is possible to use two doublers. Once mounted you can keep turning it to the right side and hear some clicking. AFAIK these are diopter intervals for compensation. I always thought this was just a mechanism to prevent too fastened mounting on the bin but later on I learned on this BF otherwise

Just get yourself a extra spare eyecup, remove the rubber ring and connect (somehow) the doubler on the spare eyecup. The thread on that eyecup fits the bin. Problem solved.

Jan

Jan
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Old Wednesday 25th October 2017, 07:46   #9
Gijs van Ginkel
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adhoc, post 7,
Bushnell and Kite offer as far as I know boosters which can be used on any binocuar, since they do not have thread mounts, but fit over the eyepiece using an adapter ring of different size.
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Old Wednesday 25th October 2017, 09:33   #10
adhoc
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Thank you Jan and Gijs.
I do need it on both eyepieces as I dislike monocular viewing, which normally means scopes.
Googling for "opticron 2x adapter" now brought a lot of info, in this forum and elsewhere. But it is a bit of an overload when looking through it for what I need!
Can someone please tell me of their experience with fixing 2 adapters on 1 binocular (making it effectively a higher-x binocular)? Thanks! Or maybe no-one does this for some reason/s I cannot see!
The adapter is much larger (and hence heavier) than I thought, and this also is a bit discouraging. It took some time to find a picture of adapter+binocular, nearly all show the adapter alone. B&H has a fine image of the new Opticron 2x adapter fixed to an Opticron DBA 8x42 (on one side only!)
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Old Wednesday 25th October 2017, 10:20   #11
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Collimation is an issue if your trying to use on both eyepieces.
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Old Wednesday 25th October 2017, 15:33   #12
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It is much more sensible to get a 15x50 binocular, especially a Canon 15x50 IS, than to try to use two doublers on an 8x binocular.

However, if Swarovski boosters screw on, then they may be well enough positioned to keep alignment.

I had trouble trying to use a 2.5x booster on one side of the Canon 18x50 IS.
A small scope is better.
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Old Wednesday 25th October 2017, 20:19   #13
ticl2184
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Thanks for your replies guys ....I contacted Swarovski ...It appears that the booster was designed for previous models but not the optical formula of the SV's....
Be nice of they did an updated version...I lost my ATS 65HD sailing this year ...So I need a cheap replacement
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Old Wednesday 25th October 2017, 20:54   #14
Gijs van Ginkel
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ticl2184, post 13,
I have asked a workshop a couple of years ago, to make an adapter ring that fits the Swarovski booster with a Swarovski binocular that could not be used with the original fitting of the booster. The ring wored fine, so I could use the booster on Swarovski binoculars that were not made for this booster.
Fitting two boosters on the Swarovski binoculars worked also fine, since the tread mount keeps the instrument pretty well aligned, so there were no collimation problems.
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Old Thursday 26th October 2017, 03:48   #15
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Thanks for the replies to my own inquiry, offbeat it seems, about two of these on one binocular. The idea is pretty much out after what I have learnt now.

Binastro said, "It is much more sensible to get a 15x50 binocular...than to try to use two doublers on an 8x binocular", but I was thinking of 10x to 20x or 12x to 24x, into the scope range. Actually I have a 15x50 on the way, an Alpen Teton, available right now at OpticsPlanet at an incredible $335.52, after some coinciding discounts.
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Old Friday 27th October 2017, 19:08   #16
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I've just managed to buy a booster at 100..Should get in on Wednesday ....
If it works then its a cheaper solution to buying another scope...
I'll send some pics of the image when it arrives ...
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Old Wednesday 1st November 2017, 17:13   #17
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I didn't buy the booster in the end....
Tested it thoroughly today with both my 8 and 10x SV''s. ...

You guys were right ....Fitting wasn't really a problem. ..In fact it fitted the thread of 8x32 SV....
The problem was the massively reduced fov and colour rendition ...
I would say the fov in both my 8 and 10x SV's was reduced by at least 70-75%.....
And in respect the colour rendition ...The bright, crisp white I'm used to, was transformed into a coffee brown overtone....

The product in my opinion is still good though ....However Swarovski was right...It simply can't do justice to the awesome quality of the Swarovision optics. ..

Cheers Tim
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Old Wednesday 1st November 2017, 22:05   #18
Gijs van Ginkel
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ticl2184, post 17,
Did you try a new booster or an older one? I ask it, since the color reproduction of the older one was certainly not up to the new standards, the new ones are nice color neutral.
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Old Thursday 2nd November 2017, 09:04   #19
ticl2184
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Not sure Gijs van Ginkel. ....
It was second hand but in excellent condition....

I believe Swarovski no longer produce a binobooster ...How do you tell the difference between a old or new one ?

Cheers Tim
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Old Sunday 5th November 2017, 08:53   #20
Gijs van Ginkel
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ticl2184, post19,
The older booster influences the color reproduction, it shifts the image more to the red region of the spectrum, that may explain the brownish image impression you mentioned in one of your posts.
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Old Wednesday 8th November 2017, 13:09   #21
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Some time ago I started, but not yet completed a systematic comparison of different means of "externally" modifying magnification of telescopes (including binoculars) by means of teleconverters (alias extenders, doubler,..).
I came to the conclusion, but cannot yet proof it, that optically relatively simple galilean (or, sorry to Jan and Gijs: Dutch) telescope concept teleconverters in front of the objective as discussed:
http://pages.mtu.edu/~shene/DigiCam/...Telephoto.html
tend to generally perform better than much more sophisticated devices put after the eyepiece. Brightness and field of view suffering obviously with a device put after the main telescope. But more interestingly I could never so far observe a clear gain in resolution with this set up.
Discussing this observation with experts inside and outside industry I was told, that most, even expensive binoculars, have only correction adapted to the performance of the human eye. A teleconverter put after such a binocular therefore cannot improve the performance of such an arrangement.
With better corrected telescopes, offering dedicated teleconverters put between prisms and eyepiece, the situation should be different.

HW
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Old Wednesday 8th November 2017, 13:44   #22
Gijs van Ginkel
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Hans, post 21,
Fortunately Hans, you were just in time to change "galilean"into "Dutch", otherwise we certainly would have asked the pope to ban you...
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Old Wednesday 8th November 2017, 15:21   #23
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Hi HW.
I don't think that is entirely true.
Some binoculars, if one is lucky can give much better resolution than the normal magnification.
My selected Japanese Celestron 20x80 gave much better resolution with a 7x binocular behind it.
I was able to read a hotel sign at 11 miles, when it was quite impossible at 20x.
Probably 80x would have been ideal, but I didn't have a 4x binocular to hand.

With the early 35mm rangefinder cameras one had the option of 35mmm, 50mm and 85mm focal lengths with front afocal components.
The inter lens shutter had the common rear component.

I have several 1.4x teleconverters that I use with good camera lenses, usually telephotos, which I use with Japanese monocular converters with 10mm erect image eyepieces.
I also use 2x or 2x to 3x teleconverters.
With the Vivitar Series 1 600mm f/8 solid Cat I could easily separate both components of epsilon Lyrae at 180x with clear space between the double stars about 2.5 arcsecond separation.

Last edited by Binastro : Wednesday 8th November 2017 at 16:13.
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Old Wednesday 8th November 2017, 16:25   #24
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Further to post 23.

Actually, in my experience, making good afocal components is more difficult than making good teleconverters.

The Zeiss Mutar 1.7x was the only Zeiss lens that I tested that used radioactive, probably thorium glass. I presume it was too difficult to make well using regular glass at that time. I suppose Zeiss may have occasionally used such glass elsewhere.

The only really useful point for me about afocal adapters is that it can make camera lenses faster.
For instance a 50mm f/1.2 lens can be changed to 30mm f/0.72 approx. with a wide angle afocal front component.

The very fast refractive Zeiss lens around f/0.3 I think uses this principal, maybe with an elliptical front element.

With binoculars I suppose large afocal front elements might be too large to use on roof prism binoculars.

The best solution is just to use high power regular binoculars designed for the job.

Incidentally, what year was the improved Swarovski colour neutral booster introduced? Did it have a different part number?
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Old Wednesday 8th November 2017, 21:47   #25
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If I want to get a bit more magnification out of a binocular I just slap my smartphone over one eyepiece (with the relevant adapter of course). The results might not be brilliant but it keeps me happy. Sort of like phonescoping really but on a binocular.
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