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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/27/2010 at 22:02
kelly1278 View Drop Down
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this may be a dumb question but im going to ask anyway. i just recieved a zeiss diavari fl 4-16x50 and im having a hard time seeing much differance between it and my bushnell elite 4200 4-16x40 could  this be because i wear contact lenses?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/27/2010 at 22:10
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I certainly hope so.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/27/2010 at 22:17
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yea i know maybe i dont have it focused right i know the zeiss is better . 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/27/2010 at 22:19
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my contacts dont mess with me when looking through a scope at all, my glasses i think would if i were wearing them.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/27/2010 at 22:22
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maybe its time for a new pair of contacts . i havent compared them in low light yet im sure there will be a lot more differance then
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/27/2010 at 23:08
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I wear contacts as well, and I can't imagine it being an issue of you wearing contacts.  Maybe try a new pair of contact if their old.  Or have your eyes checked again.  I often have to get a stronger prescription.  

Edited by ckk1106 - August/27/2010 at 23:09
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/27/2010 at 23:54
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Originally posted by pyro6999 pyro6999 wrote:

my contacts dont mess with me when looking through a scope at all, my glasses i think would if i were wearing them.

I had laser surgery 4 years ago, and corrected my eyes to 20-15.  My surgeon and I were talking, as he’s a shooter too, and he told me glasses reflect 10% of the usable light from each side.  So, wearing glasses all those years was costing me 20% of the usable light coming from my scopes.  Not a good thing, especially when you spend top $$ for an Alpha-Optic and expect to get 95+% light transmission.  I never asked about contacts as I didn’t (couldn’t actually) wear them.  It seems that the contact is another glass/plastic surface the light has to pass through before you get the “usable” light.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/27/2010 at 23:58
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Yes, I wear contacts and have wondered the same thing at times. When I look through scopes without them and refocus them the scopes do seem sharper and crisper to me also.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/28/2010 at 06:14
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Originally posted by Magnumdood Magnumdood wrote:

Originally posted by pyro6999 pyro6999 wrote:

my contacts dont mess with me when looking through a scope at all, my glasses i think would if i were wearing them.

I had laser surgery 4 years ago, and corrected my eyes to 20-15.  My surgeon and I were talking, as he’s a shooter too, and he told me glasses reflect 10% of the usable light from each side.  So, wearing glasses all those years was costing me 20% of the usable light coming from my scopes.  Not a good thing, especially when you spend top $$ for an Alpha-Optic and expect to get 95+% light transmission.  I never asked about contacts as I didn’t (couldn’t actually) wear them.  It seems that the contact is another glass/plastic surface the light has to pass through before you get the “usable” light.


thats very true, im not sure how much a fellar does lose through a contact. i suspect it cant be much beings the lenses of today are less than paper thin, but you are right im sure you lose a little bit.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/28/2010 at 07:10
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I don't know , I would expect that you might be losing some light as suggested through your glasses but that should impact both scopes evenly. I might question your expectation and definition of "much difference" as the 4200 is a pretty nice scope in it's own right and if you are comparing them in a casual look through in the middle of the day then there isn't going to be a day vs night sort of difference in my experience. Starting with the level of scopes you have the 4200 and moving to the next levels the law of diminishing return really starts to set in IMHO and the small increments in quality are probably only going to be seen in the extreme edges of performance such as getting you an extra 5-10 minutes of low light instead of 1hr. This isn't a slam against the ziess but it's like pro athletes such as golfers The difference in Tiger Woods and the guy at the bottom of the money list is probably a 1-2 stroke average.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/28/2010 at 07:44
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Since you are wearing contacts when looking through both scopes, the difference in what you see isn't due to the contacts.
 
If you are comparing the two scopes during a high light level, and looking at the center of the field, you won't see a big difference.  Try comparing them when the light levels get low; test them for veiling glare; see which one has the flattest image; see which one has the best depth of field; and the list could go on.
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/28/2010 at 08:02
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thanks for all the replies maybe i need laser eye surgery to fully enjoy my scope.  if not im not sure the more expensive optics are worth the extra money
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/28/2010 at 08:17
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Be interesting to get a professional opinion on this, maybe Koshkin can shed some light on this.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/28/2010 at 10:25
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Another difference in the scopes, whether or not contacts are worn or not, should be how easy the scope reticle is to find at max magnification. The eye box on the Zeiss should be much better.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/28/2010 at 20:53
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yea i would like to hear koshkins opinion for sure
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/28/2010 at 21:00
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I have been wearing contacts many years. At times i do have trouble focusing but i can tell a big difference in my scope brands. My Steiner is always more crisp and bright than my vx 3.   
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/28/2010 at 21:56
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I apologize for semi-hijacking this thread.  Regardless of the amount of light and/or resolution lost to glasses or contacts, if you had the eye surgery and compared the scopes again they would both appear to have a better image, but the relative difference would not change, IMO.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/29/2010 at 09:50
kelly1278 View Drop Down
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yea im sure your right but at least i wouldnt have to deal with fogging contacts anymore
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/29/2010 at 11:31
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Originally posted by kelly1278 kelly1278 wrote:

yea im sure your right but at least i wouldnt have to deal with fogging contacts anymore
 
That is a definite plus if you have the eye surgery.  My glasses used to fog no matter what I tried; now I don't have to worry about that.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/29/2010 at 13:48
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I have considered getting the surgery done but Im a little nervous about it. Its kind of scary having someone CUT ON YOUR EYEBALL!!!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/29/2010 at 17:57
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I had Lasik done on my eyes in 2001. I told the opthamalogist that I was a pilot and I would favor distant vision over reading distance. He adjusted his calculations to achieve this.
 
Lasik is not a panacea. A common problem centers around the fact the your eyelids may no longer close perfectly when sleeping leading to dry eyes. Lasik will also not compensate for aging eyes needing reading glasses. The bias in my perscription only made this worse. All in all, considering my 20/240 vision, I would do it again.
 
As far as considering your scopes, there are three areas to consider, exit pupil diameter, contrast and resolution.
 
For any given magnification, the 50mm objective will have a larger exit pupil. However this will only be apparent when your pupil is dialated due to low light. In normal daylight, your pupil diameter is smaller than that of either scope and thus you will not detect a difference. In low light, the 50mm objective lens will be superior.
 
Contrast is a function of the glass, construction, and coatings. For scopes of similar construction, coatings usually make the difference.
 
Resolution is a function of the optical quality of the lenses.
 
One thing you may want to consider is the field of view. One scope may afford a greater view at the same magnification.
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/31/2010 at 11:34
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Have a hard time believing that 20% figure.  If it was true, things would get a noticeably brighter at dusk when I raised my glasses up.  It doesen't.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/31/2010 at 12:15
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TexasPhotog
 
Your eye sensitivity is measured on a logrithmic scale, not linear. This is similar to fstops on a camera. 1 fstop doubles the light striking the sensor. A 20% increase would be about 1/4 of an fstop.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/31/2010 at 12:23
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My contacts affect me when I look through a scope. Of course the affect me when I am not looking through a scope. They are old and I need a new perscription. Maybe your having the same issue. When did you last get your eyes checked. Its been a few years for me.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/31/2010 at 19:49
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i had them checked a little over a year ago
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