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 Scope question....Adjustable objective,how does it work?!!
#5539044
01/13/15 03:29 AM
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Joined: Dec 2009
Posts: 5,714
TAT
OP
THF Trophy Hunter
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OP
THF Trophy Hunter
Joined: Dec 2009
Posts: 5,714 |
When you have a scope and on the front it has adjustments,......50,100,200,300. The scope is sighted in at 100 yards with front setting on 100. How is this front function used? I've always had regular scopes. If someone could break this down in laymen terms I would appreciate it. I do understand it's an adjustable objective. How do you use it. Thanks,been hunting my whole life but feel like a real newbie right now!
It's not how you fall, It's how you get up.
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Re: Scope question....Adjustable objective,how does it work?!!
[Re: TAT]
#5539194
01/13/15 04:07 AM
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Joined: Sep 2006
Posts: 32,480
kmon11
junior
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junior
Joined: Sep 2006
Posts: 32,480 |
The Adjustable objective is for adjusting parallax at different distances. On some scopes you will also see a more crisp image when adjusted for that range. This video shows it pretty good. Side adjustment where yours is on the objective bell
lf the saying "Liar, Liar your pants on fire" were true
Mainstream news might be fun to watch
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Re: Scope question....Adjustable objective,how does it work?!!
[Re: TAT]
#5539688
01/13/15 02:30 PM
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Joined: Nov 2007
Posts: 9,515
RiverRider
THF Trophy Hunter
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To understand what the AO does it helps to understand the other end of the scope first.
The first thing you should do with a new scope is focus the ocular so that the reticle is clear. Once that's done, then a target that is the same distance as the parallax distance will also be in focus because its image is in the same focal plane as the reticle.
The image seen when looking through a scope is three dimensional and is floating in the scope tube. With an adjustable objective, the image can be moved to and fro so that objects at different ranges can be moved into the same plane as the reticle. That brings the object into perfect focus (assuming the ocular is properly focused on the reticle) and eliminates parallax error.
![[Linked Image]](https://i.imgur.com/Kqs020H.jpg) "Arguing with you always makes me thirsty." -Augustus McRae
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Re: Scope question....Adjustable objective,how does it work?!!
[Re: RiverRider]
#5539693
01/13/15 02:31 PM
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Joined: Dec 2008
Posts: 41,156
J.G.
THF Celebrity
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THF Celebrity
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Posts: 41,156 |
^^What they said^^
Good video, too!
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Re: Scope question....Adjustable objective,how does it work?!!
[Re: TAT]
#5539740
01/13/15 02:51 PM
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Joined: Sep 2009
Posts: 4,755
ccoker
Extreme Tracker
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Extreme Tracker
Joined: Sep 2009
Posts: 4,755 |
And be aware that the yardage markings may very well not match up with your actual yardage.
That is VERY common and not a problem with the scope.. it's an estimation.
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Re: Scope question....Adjustable objective,how does it work?!!
[Re: RiverRider]
#5539839
01/13/15 03:35 PM
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Joined: Dec 2008
Posts: 22,630
Cast
THF Celebrity
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THF Celebrity
Joined: Dec 2008
Posts: 22,630 |
To understand what the AO does it helps to understand the other end of the scope first.
The first thing you should do with a new scope is focus the ocular so that the reticle is clear. Once that's done, then a target that is the same distance as the parallax distance will also be in focus because its image is in the same focal plane as the reticle.
The image seen when looking through a scope is three dimensional and is floating in the scope tube. With an adjustable objective, the image can be moved to and fro so that objects at different ranges can be moved into the same plane as the reticle. That brings the object into perfect focus (assuming the ocular is properly focused on the reticle) and eliminates parallax error. Dang man, I'm not sure I understood that. Pretty geeky, lotsa big words. Here's the thing. If you got past scope 101, mounting and adjusting the scope to your eyesight, get the gun to a stable bench rest and put the crosshairs on a target, say 50 yards down range. Now, while looking through the scope, adjust the AO to get a good focus on the target. Now, pay particular attention to the exact spot the crosshairs are on the target, and just barely nod your head as if you were nodding yes, but only a tiny movement. You'll probably notice that the crosshairs 'move about' across the target when you nod. That right there is parallax error. Get back on the scope and start nodding again, but this time, slowly adjust the AO and you will see the parallax error go away. You can move your eye around but the crosshairs remain fixed on the same spot. Do this until it's perfect, no movement relative to the target. Now, put 10 rounds in the same hole and move to the 100 yard range and do it again. It'll become a kneejerk reaction every time you put the crosshairs on a target.
Cast ![[Linked Image]](http://winsounds.com/wp-content/uploads/2013/11/Longhorn-Logo.png) I have a short attention spa
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Re: Scope question....Adjustable objective,how does it work?!!
[Re: TAT]
#5540270
01/13/15 06:20 PM
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Joined: Dec 2009
Posts: 5,714
TAT
OP
THF Trophy Hunter
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OP
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Awesome,y'all! Thanks for the great info.
It's not how you fall, It's how you get up.
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Re: Scope question....Adjustable objective,how does it work?!!
[Re: Cast]
#5541285
01/14/15 02:24 AM
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Joined: Nov 2007
Posts: 9,515
RiverRider
THF Trophy Hunter
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THF Trophy Hunter
Joined: Nov 2007
Posts: 9,515 |
Good video. I wasn't able to view it on my (damn)phone this morning. To understand what the AO does it helps to understand the other end of the scope first.
The first thing you should do with a new scope is focus the ocular so that the reticle is clear. Once that's done, then a target that is the same distance as the parallax distance will also be in focus because its image is in the same focal plane as the reticle.
The image seen when looking through a scope is three dimensional and is floating in the scope tube. With an adjustable objective, the image can be moved to and fro so that objects at different ranges can be moved into the same plane as the reticle. That brings the object into perfect focus (assuming the ocular is properly focused on the reticle) and eliminates parallax error. Dang man, I'm not sure I understood that. Pretty geeky, lotsa big words. Here's the thing. If you got past scope 101, mounting and adjusting the scope to your eyesight, get the gun to a stable bench rest and put the crosshairs on a target, say 50 yards down range. Now, while looking through the scope, adjust the AO to get a good focus on the target. Now, pay particular attention to the exact spot the crosshairs are on the target, and just barely nod your head as if you were nodding yes, but only a tiny movement. You'll probably notice that the crosshairs 'move about' across the target when you nod. That right there is parallax error. Get back on the scope and start nodding again, but this time, slowly adjust the AO and you will see the parallax error go away. You can move your eye around but the crosshairs remain fixed on the same spot. Do this until it's perfect, no movement relative to the target. Now, put 10 rounds in the same hole and move to the 100 yard range and do it again. It'll become a kneejerk reaction every time you put the crosshairs on a target. I guess dumbing things down to suit you is an artform I'll never master. Ten years of trying and I ain't got it right yet.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Scope question....Adjustable objective,how does it work?!!
[Re: TAT]
#5544289
01/15/15 02:32 PM
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Joined: Dec 2009
Posts: 5,714
TAT
OP
THF Trophy Hunter
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OP
THF Trophy Hunter
Joined: Dec 2009
Posts: 5,714 |
I think I understand,as in most things I have to get out and try and work on it. From what you guys have told me and all the reading I've been doing I think I understand better in how this works. Thanks again for dumbing things down for me! Lol
It's not how you fall, It's how you get up.
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Re: Scope question....Adjustable objective,how does it work?!!
[Re: RiverRider]
#5544663
01/15/15 05:22 PM
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Joined: Dec 2008
Posts: 22,630
Cast
THF Celebrity
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THF Celebrity
Joined: Dec 2008
Posts: 22,630 |
Good video. I wasn't able to view it on my (damn)phone this morning. To understand what the AO does it helps to understand the other end of the scope first.
The first thing you should do with a new scope is focus the ocular so that the reticle is clear. Once that's done, then a target that is the same distance as the parallax distance will also be in focus because its image is in the same focal plane as the reticle.
The image seen when looking through a scope is three dimensional and is floating in the scope tube. With an adjustable objective, the image can be moved to and fro so that objects at different ranges can be moved into the same plane as the reticle. That brings the object into perfect focus (assuming the ocular is properly focused on the reticle) and eliminates parallax error. Dang man, I'm not sure I understood that. Pretty geeky, lotsa big words. Here's the thing. If you got past scope 101, mounting and adjusting the scope to your eyesight, get the gun to a stable bench rest and put the crosshairs on a target, say 50 yards down range. Now, while looking through the scope, adjust the AO to get a good focus on the target. Now, pay particular attention to the exact spot the crosshairs are on the target, and just barely nod your head as if you were nodding yes, but only a tiny movement. You'll probably notice that the crosshairs 'move about' across the target when you nod. That right there is parallax error. Get back on the scope and start nodding again, but this time, slowly adjust the AO and you will see the parallax error go away. You can move your eye around but the crosshairs remain fixed on the same spot. Do this until it's perfect, no movement relative to the target. Now, put 10 rounds in the same hole and move to the 100 yard range and do it again. It'll become a kneejerk reaction every time you put the crosshairs on a target. I guess dumbing things down to suit you is an artform I'll never master. Ten years of trying and I ain't got it right yet. Only ten years? It seems like so much longer than that!
Cast I have a short attention spa
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