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Fast Focus Eyepiece Position

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RifleDude View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RifleDude Quote  Post ReplyReply Direct Link To This Post Posted: February/25/2008 at 18:16
Mojo, the 12:00 "0" position is directly in the middle of the total adjustment range, not bottomed out in either direction, which is where I was referring to as my starting point for adjustment.  If the ring was indeed turned all the way in to start, then I too would have to rotate it in a counterclockwise direction to get to the 3:00 position where it's best for me.  I think when all is said and done, you and I are talking about the same final adjustment position with the embossed arrow on the rubber ring pointing at the word "Kahles" (using a Kahles scope as an example) on the right side of the ocular housing.  Usually scopes with the FF eyepiece come directly out of the box set at the "0" setting, directly in the middle of the adjustment range.
Ted


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mojo Quote  Post ReplyReply Direct Link To This Post Posted: February/25/2008 at 20:36
My bad RifleDude.  We were ending up with the same thing, just our starting points were different.  Yes, the middle zeros out right with the Arrow right at the 12:00 position.  I finally figured it out!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tahqua Quote  Post ReplyReply Direct Link To This Post Posted: February/27/2008 at 20:07
Originally posted by RifleDude RifleDude wrote:

Originally posted by Mojo Mojo wrote:

RifleDude:  You are correct that adjusting the ocular ring corrects focus for both the image, and the reticle.  After fooling around with it in my rifle rest,  I found that I ended up with the most clarity for both, at the 3:00 position.  This would be one half turn, countetclockwise.
 
The 3:00 position is where it's best for me as well, except if I'm looking directly at the eyepiece, the 3:00 position would be 1/4 of a turn clockwise (from the "0" position at 12:00).


After further review with the street glasses I normally wear hunting, I find 3:00 to be it also. My Burris have been the biggest pain to re-focus and the Leupold's not far behind. I'm starting to like fast focus after all. Chris is going to hate me for my earlier dislike of this feature.
Before you know it Supertool will have me putting a 1.1-36x72 IOR on my 30-30Wink
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RifleDude Quote  Post ReplyReply Direct Link To This Post Posted: February/28/2008 at 06:52
Good deal, gents.  I don't feel so out of the ordinary after all.  I was beginning to think maybe my eyesight was screwed up!Big%20Smile
Ted


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Post Options Post Options   Thanks (0) Thanks(0)   Quote RifleDude Quote  Post ReplyReply Direct Link To This Post Posted: February/28/2008 at 06:54
Originally posted by tahqua tahqua wrote:

Before you know it Supertool will have me putting a 1.1-36x72 IOR on my 30-30Wink
 
I'm guessing that one would have a 60mm tube, right?Wink
Ted


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dogger Quote  Post ReplyReply Direct Link To This Post Posted: February/28/2008 at 09:35
Not sure if I understand this correctly but I was always instructed when focusing the ocular to have the scope pointed at a patch of open sky and then adjust the ring until the reticle is in sharp focus.  Suspect that this is focusing the reticle in the target focal plane so I guess it automatically is focusing for your target image too.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RifleDude Quote  Post ReplyReply Direct Link To This Post Posted: February/28/2008 at 11:00
That's pretty much true with a traditional fine pitch threaded eyepiece, because you have to make several turns to see a difference in focus.  It's harder to find the best focus, so you use the reticle as your point of reference.  With the fast focus eyepiece, it's easier to find the best focus since the thread pitch is coarser on the focus ring and therefore a smaller amount of movement makes a larger difference in focus.  So, with the Fast Focus eyepiece, you would adjust to get both the target image and reticle in best focus.
Ted


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lawnfella Quote  Post ReplyReply Direct Link To This Post Posted: February/28/2008 at 14:55
My Zeiss Conquest and my Kahles CL are sitting at the 3:00 position.  The reticles are good and black and the image is clear. Guess it depends somewhat on eyesight and if you wear glasses or contacts to get the image focused in the right position for some people. I don't wear glasses or contacts and have 20/20 vision the last I checked.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tip69 Quote  Post ReplyReply Direct Link To This Post Posted: February/28/2008 at 17:42
Does it seem to matter to you guys if you are looking at something really close...... say like 10 yds or not?  I've noticed that when I'm looking at something really close, I can't get the image and the reticle focused at the same time....... when one is in focus the other is not!  I have 3 new scopes all with ff eyepiece and its been too cold to go to the range, so I'm not sure what to think about the focus thing.  Hopefully, it will all be ok when I get to the range this Sat..... suppose to get into high 50s.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mojo Quote  Post ReplyReply Direct Link To This Post Posted: February/28/2008 at 18:05
You will have the difficulty to have the reticle sharp and the target sharp at the same time if you are looking at a target that is too close, or that the power is too high while looking at a target that is too close.  For example, using 10 power at a target 30 yards away.
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