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Sightron SII Bigsky 3-9x42

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/04/2009 at 07:12
iwilder View Drop Down
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Hi All:
 
Just a quick observation or two about this scope.  I got this recentlty and compared it to a 3x9 Monarch and a 3x9 Burris Signature I had.  All three have duplex reticles.  With my eyes I couldn't see alot of difference between the three as far a brightness went.  The reticle in the Burris is easier to see as it is a bit thicker.  The Burris also has a significanly larger field of view than the other two which are similar.  I wonder what the real magnification is for that scope?  I have some serious floater problems with my eyes so I may not benefit from better optics as much as others with better eyes.
 
Initially when I looked through the Sightron, the view was not good.  There was parallax as well as the image near the edges of the field would distort significanly when I moved my head.  I wondered if there was something wrong with the scope.   I began trying to adjust the focus.  I usually need to do this with most scopes as my 60+ year old eyes have lost the ability to focus up close.  When I got what I felt was a decent focus I noticed that a lot of the parallax had disappeared.   I thought that was strange as I had done nothing to adjust for paralaxl as this scope had no parallax adjustment as far as I knew.  So I thought I would take a look at the owners manual and what do you know.  BigSky scopes adjust for focus and parallax with the ocular although the SI and SII do not.  I went back to twisting the ocular and believe I have gotten a decent fous and removed the parallax at the range I was viewing which was approximately 150 yards.  That is a new one for me.  Is this unusual?  I don't recall ever seeing it before in a scope. 
 
Thanks for any imput.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/04/2009 at 12:43
Boom Stick View Drop Down
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I already knew about the focus ring being on the ocular piece, but I did have a question.  Now that it is in focus, what is your overall opinion of the scope compared to the other two?

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/06/2009 at 21:22
iwilder View Drop Down
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Originally posted by Boom Stick Boom Stick wrote:

I already knew about the focus ring being on the ocular piece, but I did have a question.  Now that it is in focus, what is your overall opinion of the scope compared to the other two?

The focus on the eye piece is common it was the parallax adjustment that I found strange.  I can't remember anyone mentioning it in their reviews but they may have.  Commonly the parallax is adjusted by moving the objective lens (AO) or by side focusing which I believe moves the reticle.
 
To answer your question about how they compared, I would have to say that to my eyes the three appeared to be very similar.  The reticles are slightly different, as are the fields of view but overall I couldn't say that I thought the image was any better on one that the others. 
 
As I stated in my initial post I don't have the best eye sight in the world so I may not be able to perceive a difference that would be apparent someone with better eyes.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/07/2009 at 15:53
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iwilder it seems your eyes can't seem to tell the differance on the other two scopes?...You should be able to see a differance with this scope in low light hunting conditions, not by just sitting in a room looking through all three scopes out the window.All scopes should be up in a tree stand place a nice deer target against the field 100 yards out and you should see a differance in low light.This is how I test the performance on my scopes.By the way my eyes still can tell whats a Simmons and a Nikon.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/07/2009 at 16:08
koshkin View Drop Down
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Everyone's eyes are different.  That is one of the reasons for different scopes looking better to different people.  

As far as eyepiece focus si concerned, it is not designed for dialing out parallax, but it does have a small effect on it, especially on scopes with wire reticles, like the Sightron.  THe best way to deall with this is to adjust the eyepiece focus while looking at a clear blue sky.  Adjust it until the reticle is at its absolute sharpest (make sure you rest your occasionally as you do this).

ILya
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2009 at 08:47
iwilder View Drop Down
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Originally posted by koshkin koshkin wrote:


As far as eyepiece focus si concerned, it is not designed for dialing out parallax, but it does have a small effect on it, especially on scopes with wire reticles, like the Sightron.
ILya
 
That is what I would normally think as well.  I have always adjusted focus in this manner but hadn't seen a scope where it seemed to make as much difference in the parallax.  The owners manual specifically says that the BigSky scope adjusts parallax this way and that the SI and SII models do not.  I looked in the manual as a last resort of course.
 
Ike
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2009 at 09:12
John Barsness View Drop Down
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Over the years I have adjusted the focus on many supposedly non-parallax-adjustable scopes to eliminate a very small amount of parallax. In some scopes the technique works better than in others. Of course higher magnification tends to create more visible parallax, but I also suspect  that the thickness of various wire reticles has an effect too.
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