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
Parallax vs Focus
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="Bart B" data-source="post: 1795707" data-attributes="member: 5302"><p>Stumbled onto this thread looking for something else, then read Catfish's words again on scopes having three image planes.</p><p></p><p>Why do scope patent drawings showing light rays focusing on only two image planes? Front/first one at objective lens focal point and the rear/second one at the reticle plane.</p><p></p><p><a href="https://patents.google.com/patent/US4643542A/en" target="_blank">https://patents.google.com/patent/US4643542A/en</a></p></blockquote><p></p>
[QUOTE="Bart B, post: 1795707, member: 5302"] Stumbled onto this thread looking for something else, then read Catfish's words again on scopes having three image planes. Why do scope patent drawings showing light rays focusing on only two image planes? Front/first one at objective lens focal point and the rear/second one at the reticle plane. [URL]https://patents.google.com/patent/US4643542A/en[/URL] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Parallax vs Focus
Top