Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
35 mm tube IOR's
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Guns &amp; Glass" data-source="post: 17305" data-attributes="member: 1718"><p><strong>Re: 35 mm tube IOR\'s</strong></p><p></p><p>It's only confusing because somehow, somewhere you, and others have received wrong information. </p><p></p><p>Magnification of the reticule can be done at two places.</p><p>In the front, which is referred to as the First Focal Plane.</p><p>In the rear at the occular assembly, which is referred to as the Second Focal Plane.</p><p></p><p>Brent, your NF R2 does grow in size as the target grows. Now, because they BOTH grow at the same time, in the same proportion,...it appears that they don't.</p><p>Easiest way to examine (test)this is a side by side comparison of a Leupold, Nikon, Burris, many IOR's, Tasco, Simmons, Zeiss Conquest, and many many more, which almost all of them are Second Focal Plane.</p><p></p><p>At the lowest power, look at something white.</p><p>When you increase the magnification, the target grows, but the reticule gets smaller.</p><p>In reality, it stays the same size, but the target is growing.</p><p></p><p>Now, do exactly the same thing with your Night Force. Sometimes it's easier to look at a blank wall. The lines will NOT get smaller. That's First Focal Plane in action.</p><p></p><p>i don't wish to antagonize other posters, but by explaining correctly how things really are, some will get upset.</p><p>Bear in mind my wish is to easily explain away some misconceptions that have been around for a while, so we all can shoot better, and have more fun.</p><p></p><p>Calibrations are all set, no matter who make the optics. Physics, and math don't change.</p><p></p><p>Try the 'comparison' first, then we can get to the reasons for subtension changes.</p><p></p><p>But first I'm going to throw a stink bomb in the fire.</p><p>I'll bet that 98% of the readers & posters, and shooters in general don't properly adjust a scope.</p><p>There is one and only one way.</p><p></p><p>[ 11-23-2003: Message edited by: Guns & Glass ]</p></blockquote><p></p>
[QUOTE="Guns & Glass, post: 17305, member: 1718"] [b]Re: 35 mm tube IOR\'s[/b] It's only confusing because somehow, somewhere you, and others have received wrong information. Magnification of the reticule can be done at two places. In the front, which is referred to as the First Focal Plane. In the rear at the occular assembly, which is referred to as the Second Focal Plane. Brent, your NF R2 does grow in size as the target grows. Now, because they BOTH grow at the same time, in the same proportion,...it appears that they don't. Easiest way to examine (test)this is a side by side comparison of a Leupold, Nikon, Burris, many IOR's, Tasco, Simmons, Zeiss Conquest, and many many more, which almost all of them are Second Focal Plane. At the lowest power, look at something white. When you increase the magnification, the target grows, but the reticule gets smaller. In reality, it stays the same size, but the target is growing. Now, do exactly the same thing with your Night Force. Sometimes it's easier to look at a blank wall. The lines will NOT get smaller. That's First Focal Plane in action. i don't wish to antagonize other posters, but by explaining correctly how things really are, some will get upset. Bear in mind my wish is to easily explain away some misconceptions that have been around for a while, so we all can shoot better, and have more fun. Calibrations are all set, no matter who make the optics. Physics, and math don't change. Try the 'comparison' first, then we can get to the reasons for subtension changes. But first I'm going to throw a stink bomb in the fire. I'll bet that 98% of the readers & posters, and shooters in general don't properly adjust a scope. There is one and only one way. [ 11-23-2003: Message edited by: Guns & Glass ] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
35 mm tube IOR's
Top