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Using Gehmann Iris 390

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Bullseye-L Forum :: Equipment Discussion

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Using Gehmann Iris 390 Empty Using Gehmann Iris 390

Post by Sheriff1962 9/13/2018, 5:50 pm

Someone please educate me about reasons for using something like Gehmann 390.  How would it help ?

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Post by Chris Miceli 9/13/2018, 6:01 pm

optimum alignment to the eye and perfect depth of field to the target is what the ad says. Most people use them to try and focus the front sight better. 

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Post by Sheriff1962 9/13/2018, 6:14 pm

How much field of view is recommended?

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Post by mspingeld 9/13/2018, 6:15 pm

It will allow you to see both the front sight and the target in sharp focus. Not necessarily an advantage (IMHO). For me, it encouraged my focus to wander away from where it needed to be (front sight). I found the blurry target helpful in that regard. Only the front sight needs to be sharp.

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Post by AllAces 9/13/2018, 9:26 pm

I used one for 10 meter air pistol and saw a 20 percent i crease in scores.
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