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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Schmidt & Bender Parallax vs. Non-Parallax
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<blockquote data-quote="Bart B" data-source="post: 103200" data-attributes="member: 5302"><p>First, there is no such thing as parallax adjustment. That's the wrong term to explain or name what you're talking about. I don't care what rifle scope makers say or put in print. "Calibrated" is also the wrong term.</p><p></p><p>Focus adjustment is the correct term. Your scope does not have an adjustment for its front lens to focus the target image on the reticule. If the target image isn't focused on the reticule but is focused in front of or behind it and your aiming eye is centered in the scope's optical axis, nothing bad will happen unless the range is very short such as 75 yards or less. Then the target image may be a bit out of focus but still seeable. If you move your aiming eye a bit off center the reticule will appear to move a little bit but at short range it doesn't matter; this is parallax but if you move your eye back to center the parallax goes away. It's the same thing as looking at your car's speedometer needle against the scale. As the driver, you see the needle aligned exactly on 60 mph but the person in the passenger seat sees the 55 mph mark aligned behind the needle; he has the parallax problem but you don't. If the passenger sits in the driver's seat he doesn't have a parallax problem reading the speedometer but you would sitting in the passenger seat. The error seen from the passenger seat depends on the distance between the needle and the markings on the speedometer's face. Look up 'parallax' in your favorite dictionary.</p><p></p><p>Your scope is probably focused at some point between 100 and 150 yards. Target images will appear clear from 60 or so yards all the way past 1000 yards. Put your rifle on a rest then look through the scope at targets located at several ranges. Move your aiming eye around and see if the reticule appears to move on the target. If it does then parallax exists. Note how much the reticule appears to move and that's the amount of aiming error cause by parallax you have. It typically isn't very much. There's nothing wrong with your scope. It just isn't focus properly at very short ranges.</p></blockquote><p></p>
[QUOTE="Bart B, post: 103200, member: 5302"] First, there is no such thing as parallax adjustment. That’s the wrong term to explain or name what you’re talking about. I don’t care what rifle scope makers say or put in print. “Calibrated” is also the wrong term. Focus adjustment is the correct term. Your scope does not have an adjustment for its front lens to focus the target image on the reticule. If the target image isn’t focused on the reticule but is focused in front of or behind it and your aiming eye is centered in the scope’s optical axis, nothing bad will happen unless the range is very short such as 75 yards or less. Then the target image may be a bit out of focus but still seeable. If you move your aiming eye a bit off center the reticule will appear to move a little bit but at short range it doesn’t matter; this is parallax but if you move your eye back to center the parallax goes away. It’s the same thing as looking at your car’s speedometer needle against the scale. As the driver, you see the needle aligned exactly on 60 mph but the person in the passenger seat sees the 55 mph mark aligned behind the needle; he has the parallax problem but you don’t. If the passenger sits in the driver’s seat he doesn’t have a parallax problem reading the speedometer but you would sitting in the passenger seat. The error seen from the passenger seat depends on the distance between the needle and the markings on the speedometer’s face. Look up ‘parallax’ in your favorite dictionary. Your scope is probably focused at some point between 100 and 150 yards. Target images will appear clear from 60 or so yards all the way past 1000 yards. Put your rifle on a rest then look through the scope at targets located at several ranges. Move your aiming eye around and see if the reticule appears to move on the target. If it does then parallax exists. Note how much the reticule appears to move and that’s the amount of aiming error cause by parallax you have. It typically isn’t very much. There’s nothing wrong with your scope. It just isn’t focus properly at very short ranges. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Schmidt & Bender Parallax vs. Non-Parallax
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