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 Post subject: Rear iris questions
PostPosted: Sun Oct 15, 2017 12:43 pm 
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Joined: Thu Sep 21, 2017 11:46 am
Posts: 3
I'm looking to get my son a new rear iris for competitive smallbore. He shoots mostly 50ft indoor but also shoots 50yd and 50m outdoor.
Can someone give me the Cliff Notes version of what the color and polarization settings do? i'm assuming the polarization removes glare much like polarized sunglasses? Seems good for outdoor and bright indoor ranges. Is there a difference between the Centra/MEC, Gehmann and Anschutz irises besides cost?

Thanks for any and all replies and advice!


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 Post subject: Re: Rear iris questions
PostPosted: Sun Oct 15, 2017 1:20 pm 
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Joined: Mon Jan 03, 2011 11:33 am
Posts: 1315
Location: Taunton, Somerset
Yep, polarisers cut down glare. Gehmann used to advertise polarisers as combating mirage, but that's hokum. I rarely use one, but I shoot outdoors mostly on a well shaded range.

Colour filters change the contrast between the aiming mark and the target background. This can be to tone down the background in bright light, or to make the mark stand out in overcast conditions. I use a yellow filter under most conditions as it cuts UV light, and doesn't darken the sight picture too much.

US Olympian Eric Uptagrafft gave a very good description on this forum of his use of filters to maintain a good and constant sight picture. If you search, I think it was 2011-ish.


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 Post subject: Re: Rear iris questions
PostPosted: Sun Oct 15, 2017 3:40 pm 
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Joined: Sun Apr 03, 2011 4:31 pm
Posts: 375
Keep it simple.. One of those things they will forget to adjust in the heat of battle. Id suggest apature size is most important followed by a handful of colors. If theres enough light my eyes prefer an amber color. Yellow seems to hurt. I guess thats why they make more than one color.


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 Post subject: Re: Rear iris questions
PostPosted: Sun Oct 15, 2017 4:23 pm 
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Joined: Wed Apr 11, 2012 8:35 am
Posts: 35
Location: United States
Get a Gehman 510. Leave about 1.0-1.2 and forget about colors, polarization. Especially for a JR shooter. Keep it simple.


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 Post subject: Re: Rear iris questions
PostPosted: Thu Nov 02, 2017 4:07 pm 
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Joined: Wed Feb 07, 2007 11:29 am
Posts: 123
I absolutely second Morgen’s statement. KISS!

MarkTrew


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