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
Individual eye focus binos
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="LouBoyd" data-source="post: 543823" data-attributes="member: 9253"><p>"No focus" binoculars work ok for young guys who don't need corrective lenses at relatively long distances. Yes they are fixed focus, nothing tricky and rely totally on your eye's ability to handle the focus. You can accomplish the same thing if you focus your IF or CF binoculars for the range you use them most (say 600 yards) then train yourself NOT to refocus when you look at things at other distances. Do your really need to count the flies on the butt of that doe at 50 yards? The amount of focus movement is proportional to the the difference of the reciprocals of the distance. For example Focusing from 50 to 100 yards take the same adjustment movement as focusing from 100 yards to infinity. Just avoid using binoculars at short range. If you're into bird watching or studying insects plan on focusing a lot.</p><p></p><p>Keep in mind that low F ratio binoculars have a shallower depth of field than high F ratio ones. For example, 7x50 binoculars will need more focusing for sharp images than 7x25's will. Sure the images on the 7x50 will allow you to see better in twilight but not the rest of the time. the 7x25s are about 1/3 the weight making them much more pleasant to carry. My favorite carry binoculars are 10x35s. I own 7x50 and 20x70's but I rarely carry them outside of my dooryard. </p><p></p><p>As far as sharing binoculars, don't. Better to give your shooting partners a decent pair for Christmas than to let them screw up your settings. When they hand the binoculars back is when you'll need them set correctly the most. Murphy's law guarantees that. That's equally true for riflescopes, spotting scopes, and night vision scopes.</p></blockquote><p></p>
[QUOTE="LouBoyd, post: 543823, member: 9253"] "No focus" binoculars work ok for young guys who don't need corrective lenses at relatively long distances. Yes they are fixed focus, nothing tricky and rely totally on your eye's ability to handle the focus. You can accomplish the same thing if you focus your IF or CF binoculars for the range you use them most (say 600 yards) then train yourself NOT to refocus when you look at things at other distances. Do your really need to count the flies on the butt of that doe at 50 yards? The amount of focus movement is proportional to the the difference of the reciprocals of the distance. For example Focusing from 50 to 100 yards take the same adjustment movement as focusing from 100 yards to infinity. Just avoid using binoculars at short range. If you're into bird watching or studying insects plan on focusing a lot. Keep in mind that low F ratio binoculars have a shallower depth of field than high F ratio ones. For example, 7x50 binoculars will need more focusing for sharp images than 7x25's will. Sure the images on the 7x50 will allow you to see better in twilight but not the rest of the time. the 7x25s are about 1/3 the weight making them much more pleasant to carry. My favorite carry binoculars are 10x35s. I own 7x50 and 20x70's but I rarely carry them outside of my dooryard. As far as sharing binoculars, don't. Better to give your shooting partners a decent pair for Christmas than to let them screw up your settings. When they hand the binoculars back is when you'll need them set correctly the most. Murphy's law guarantees that. That's equally true for riflescopes, spotting scopes, and night vision scopes. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Individual eye focus binos
Top