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AO vs. SF

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/07/2007 at 12:28
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Is it true, that all side focus scopes have 1 or more lens' than an adjustable objective model of same brand?  If this is true, do AO models tend to be clearer than SF models because of less lens ? (same brand & model of course)
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/07/2007 at 14:25
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While I have never done a comparison, I cannot imagine that one would be optically superior to the other and as far as requiring an extra lens, that seems possible, given the fact the focus knob is in a different location, thus the focusing point is in a different location.

Edited by Dolphin
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/07/2007 at 17:52
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zis is very true, monsieur blackbird!  I have valuable information from very wise optics expert that the model scopes of the side focus have 47 extra lenses, so light transmission in the scopes focusing from side would be reduced by fully 50% off of similar scope having focusing knob on objective end.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/07/2007 at 18:31
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whoda thunk
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/07/2007 at 18:54
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Originally posted by Skunk Skunk wrote:

zis is very true, monsieur blackbird!  I have valuable information from very wise optics expert that the model scopes of the side focus have 47 extra lenses, so light transmission in the scopes focusing from side would be reduced by fully 50% off of similar scope having focusing knob on objective end.

This is a frog and listening to this jibberish is ridiculous.  I would suggest that Cheaptrick check into this lunatic and consider an early block.  47 extra lenses.  I guess 4 lb. scopes could be used on some rifles.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/07/2007 at 19:58
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I have a rough idea who this skunk fella is and I think he will end passing the smell test (pun intended).

On a more reasonable note, SF scopes do not have to have an extra lens compared to AO.  It all depends on how AO is implemented.  However, for well made scope from a quality manufacturer, having an extra lens will have no perceptible impact on performance.

ILya
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/08/2007 at 05:32
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Thank You koshkin. The reason I brought this up is, everyone I know wih the BR Nightforce claims the BR models are clearer/sharper than the NXS line. I was told from NF that the NXS series have more lens' than the BR series. The tech rep. didn't specify if it was 1 or 2, or more lens.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/08/2007 at 10:48
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I have not compared NXS with BR side by side, so I can't really comment on that.  I do not think that extra lens is what does it though.  There may be other differences in the design, for one. Then there is the useability issue with SF vs AO.  While SF is usually easier to mess with without changing your position, AO is easier to make small precise adjustments with (in many ways that is simply a consequence of having a larger ring to rotate). 

ILya
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/08/2007 at 13:13
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FWIW, I have 2 of the NXS scopes, and I've used several of the BR scopes, and I honestly can't say I was able to tell any difference between the two from an optical standpoint, but there are obviously several mechanical differences.  Like ILya, I've never had an opportunity to compare them side by side, though. 

 

I would suggest calling Lightforce USA and asking them.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/08/2007 at 13:49
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Originally posted by Dolphin Dolphin wrote:

Originally posted by Skunk Skunk wrote:

zis is very true, monsieur blackbird!  I have valuable information from very wise optics expert that the model scopes of the side focus have 47 extra lenses, so light transmission in the scopes focusing from side would be reduced by fully 50% off of similar scope having focusing knob on objective end.

This is a frog and listening to this jibberish is ridiculous.  I would suggest that Cheaptrick check into this lunatic and consider an early block.  47 extra lenses.  I guess 4 lb. scopes could be used on some rifles.

 

Shamu flipper man!  Why hostile to friend?  I not call you name!  I only repeat what is common known from expert!

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/08/2007 at 13:54
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I was told by USO that there TPAL or side focus would not be as good in low light as there Ergo model
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