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At what magnification is the focus ring distances correct on a Nikko Stirling NSTT52050MD

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  • Nikko Master
  • 1,998 Answers

None of them as it is to low a magnification to get a precise range from
the only way to check is to measure out distances to targets at the ranges on the side wheel and decide

Posted on Mar 11, 2015

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Posted on Jan 02, 2017

agent91
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SOURCE: 3-9x40 magnification ring just spins

Without seeing the scope, I can only guess, the zoom ring has lost it's screw, The rear lens will come off easy enough, then peek inside for a loose screw, if you find it, you will see a long twisted slide on the side of the tube just inside, turn it till you can see where the screw went. It should be a set up something like that. when you turn the zoom knob it slides a lens front to rear fast, and it rides on that screw, Check it out.

Posted on Jul 20, 2010

Testimonial: "Thank you for the good info. You are correct. I have found that the screw is stripped. Thanks again."

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Loss of focus when izoom in


This typically means that you are have exceeded the scopes ability to focus at the distance that you are shooting. This scope is optimized for 50 yards and will function well at all magnification settings. Closer than this optimal distance the higher magnifications may present problems with blurring. Many scopes have a "parallax" adjustment that changes the optical focus to correct this problem. Several of my 22 mag scopes have this adjustment on the objective bell. You simply set the indicator line on the appropriate yardage indicator (making minor adjustments to fine tune focus). Hope this helps

Sep 16, 2010 | Simmons 22 Mag 39X32 with Rings

1 Answer

Swift microscope no 634008 having problem staying in focus when switching magnification


First, a scope of this grade will not be completely in focus as you move from one magnification to the next. But it should be close enough that you do not loose your point of interest.
Be sure you are not pressing down on the stage specimen platform as you change magnifications. It is very sensitive to pressure. Also, be sure that the coarse focus tension is tight enough that the platform is not drifting down imperceptibly as switch magnifications. Look through the scope and watch if the image goes out of focus while you are watching it. If so, you have what is called "stage drift". This is corrected by tightening the tension on the coarse focus knob.
The tension adjustment is on the coase focus shaft. It looks like a chrome ring with about 3 holes in it. There should have been a strange looking tool that came with your scope. It is used to adjust the tension. If your specimen is "drifting" out of focus, simply tighten the tension ring a little bit at a time until the specimen no longer goes out of focus. Do not get it so tight that it is not easy to operate the coarse focus knob.

May 22, 2010 | Swift M2251C Monocular Microscope

1 Answer

Broken eyepiece, 1940s vintage 7x50 individual focus binocular. Need hard rubber or bakelite replacements. eyepiece threads onto brass adapter ring (1 3/16in outside, 7/8in inside)


Here in Melbourne, Australia I make these for people who need them. I also have a reasonable amount of stock generic ones. The question is not so much the size of the ring, but the thread size, the depth of the eyecup (depends upon the magnification) which sets your eye at the correct distance behind the eyepiece (eye relief) and the size of the central hole to suit the size of the eye lens. There would be other small engineering companies that could make one for you out of delrin.

Jan 15, 2010 | Bausch and Lomb Optics

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Adjustment hard to turn


the nikko stirling scope like most scopes has rubber "O" rings in them and they can go very tight on you at times all you can do is keep twisting it back and for till it frees off (it will in time) a splash of wd 40 mat free it off as well, but not very much if it gets inside the scope its finished

Nov 19, 2009 | Nikko STIRLING EUROHUNTER RIFLE SCOPE --...

1 Answer

What is the distance at Macro mode?


In wide-angle macro mode, the minimum focus range is as close as 30cm from CCD (21cm from the lens front.) At this point, the magnification is 0.03x (equivalent to 0.12x in 35mm format).(Focal length is 7.2mm. At maximum magnification 283mm x 213mm of the subject can be captured.) In telephoto macro mode, the minimum focus range is 25cm from CCD (13 cm from the lens front) and the magnification is 0.18x (equivalent to 0.7x in 35mm format). (Focal length is 42.7mm to 50.8mm. At maximum magnification 52mm x 39mm of the subject can be captured.)

Sep 15, 2005 | Konica Minolta DiMAGE A200 Digital Camera

1 Answer

What is the distance at Macro mode?


In wide-angle macro mode, the minimum focus range is as close as 30cm from CCD(21cm from the lens front.) At this point, the magnification is 0.03x (equivalent to 0.12x in 35mm format). (Focal length is7.2mm. At maximum magnification 283mmx213mm of the subject can be captured.) In telephoto macro mode, the minimum focus range is 25cm from CCD(13cm from the lens front )and the magnification is 0.177x (equivalent to 0.7x in 35mm format). (Focal length is42.7mm to 50.8mm. At maximum magnification 50mmx37mm of the subject can be captured.)

Sep 15, 2005 | Konica Minolta DiMAGE A1 Digital Camera

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