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balance between clarity and brightness

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TasunkaWitko View Drop Down
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aka The Gipper

Joined: 10 June 2003
Location: Chinook Montana
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    Posted: 25 March 2007 at 09:16
as i understand it, you have to sacrifice one to get the other. has anyone found out where the balance peaks and you start to get diminishing returns?
TasunkaWitko - Chinook, Montana

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Pedro View Drop Down
.22 LongRifle
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pedro Quote  Post ReplyReply Direct Link To This Post Posted: 28 March 2007 at 01:52
only at a fixed price point.
As you go up in $$$, both will improve.
ie, you can make smaller, better glass (clarity) or larger, lower quality (brighter) for the same money.
When it gets dark, you need both. Which makes clarity more important, I guess.
Pedro
New Orleans, LA
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Igbo Foo View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Igbo Foo Quote  Post ReplyReply Direct Link To This Post Posted: 28 March 2007 at 06:56

What your calling clarity is properly called resolution.  It's the ability of the glass to clearly show a reference point object at a known range at a known magnification power.

In other words, with the scope at 6X, 100 yard range, will it show a 1/4" black square on a white background with sharp corners & straight edges, or not?  Or will it only resolve a 3/8" square?  Bringing a target object closer via increased magnification doesn't do much good if the target itself becomes blurry.  Resolution is pretty much the major optical difference between a cheap 6-24X target scope and an expensive one.

Light transmission, or brightness, is a separate function.  The major influences there are tube diameter and coatings, given the same quality lenses.

Foo

Wombat Snorgging: Australia's mystery perversion, Elvis's secret shame.
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