Author Topic: Geezer alert for red dot sight users (Read 843 times)

Questor · « **on:** March 02, 2005, 06:30:54 AM »

I had a pair of glasses made for shooting to help me with focusing on the front sight of my target pistol. (I'm in the bifocal generation). It's a variation on the common "computer" prescription in which the top half of the bifocal is for distances of 2 to 3 feet, and the bottom half is for reading.

This works well with iron sights.

I always assumed that with a red dot sight, that focusing on the dot was like focusing on the front sight in terms of distance. However, this appears not to be the case. When I tried the new glasses with a red dot sight, the dot was just as blurry as the target. Going back to my regular distance glasses put the dot into sharp focus, so for me at least, focusing on the dot is as if you are focusing at distance.

I never knew that, and thought you might want to know too.

palgeno · « **Reply #1 on:** March 02, 2005, 08:56:07 AM »

Most of the red dots are "projected" at a 50 yd focal plane----so" distance vision" focal length is needed as opposed to "intermediate vision" focal length for a front sight attatched to a barrel. :wink: pg

Jim n Iowa · « **Reply #2 on:** March 02, 2005, 01:56:03 PM »

So what do you advise the tri-focal shooter?
Jim

mr.frosty · « **Reply #3 on:** March 02, 2005, 02:32:13 PM »

Quote from: Jim n Iowa

So what do you advise the tri-focal shooter?
Jim

have someone place their finger on the point of impact :shock:

Questor · « **Reply #4 on:** March 02, 2005, 03:38:42 PM »

Jim In Iowa:

I guess it's the same for everyone: Use your distance lenses. Do you shoot with trifocals using a red dot sight? How do you get your best results? For me, it's very clearly with the distance lenses.

Questor · « **Reply #5 on:** March 02, 2005, 03:40:31 PM »

This explains why the bull on the target was never blurry with a red dot as it is with iron sights.

papajohn428 · « **Reply #6 on:** March 06, 2005, 11:50:02 AM »

Quote from: Jim n Iowa

So what do you advise the tri-focal shooter?
Jim

Teach your Seeing Eye Dog trigger control!

Questor · « **Reply #7 on:** March 07, 2005, 04:37:03 AM »

I've met a guy that shoots with trifocals. His classification in bullseye is high master, and I've never seen him shoot with any dogs nearby.

Jim n Iowa · « **Reply #8 on:** March 08, 2005, 01:28:00 PM »

I had some glass's made for computer work using the center lense, which focus is from two to five feet. It has worked ok, but am looking for something better.
You comedian's should keep your day jobs. Your day at range with tri,s is coming too.
Jim

Questor · « **Reply #9 on:** March 09, 2005, 09:27:05 AM »

JimInIowa:

I think the best thing to do if you want something better is to talk to the doc and tell him what you want. Have someone measure from your glasses to the front sight and take that measurement to the doc. My local eye doctor actually has a hopeful olympic rifle shooter for a customer and that's basically what they did for her. One of those Merit diopters may be a good idea too. They're popular with some of us gray-haired types in both bullseye and silhouette. I also recommend that you go to targettalk.org in the olympic shooting forum and ask what these precision shooting nuts do for glasses.

sawfish · « **Reply #10 on:** March 11, 2005, 07:13:44 AM »

In my experience, any eyeglass with magnification will make an electronic red dot appear fuzzy. I thought all of my red dot sights had crapped out until I realized I had my reading glasses on. Try it without your glasses.