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Ordinary vs ED glass

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Cooter View Drop Down
Optics GrassHopper
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Joined: December/22/2015
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    Posted: December/22/2015 at 16:02
Getting ready to buy a new scope, however I'm stuck between two options; ED or regular glass. That sounds like a no brainer, but there are some variables involved.

95% of the time will be used for backyard birding at 100 yards.
 5% will be at the gun range no longer than 200 yards.

I've narrowed my search to two Kowa models, both with a 30x eyepiece. One is the TSN 663M, ED glass, with 66mm objective and the other is aTSN 82SV, regular glass, with 82mm objective.

So for my intended use am I better off with a smaller objective and ED glass or a bigger objective and regular glass. Also note that the ED glass would run about $250 more than the regular. Would the ED glass and extra cost produce any benefits over the cheaper, larger objective?


All input, comments and opinions are welcome.

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3_tens View Drop Down
Optics Jedi Master
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 3_tens Quote  Post ReplyReply Direct Link To This Post Posted: December/22/2015 at 18:57
Change your point of view a little. If you are not satisfied with the standard glass how much more, over the $250, will it cost to correct the mistake. For Birding The ED glass will provide better color and definition. Since this is the 95% of your use then ED for sure. The 88 will be brighter but the sharper image would trump it for me.
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