What's new
New posts
New media
New media comments
New profile posts
New review items
Latest activity
Forums
New posts
Search forums
Gallery
New media
New comments
Search media
Reviews
New items
Latest content
Latest reviews
Latest questions
Brands
Search reviews
Opus
Birds & Bird Song
Locations
Resources
Contribute
Recent changes
Blogs
Members
Current visitors
New profile posts
Search profile posts
ZEISS
ZEISS Nature Observation
The Most Important Optical Parameters
Innovative Technologies
Conservation Projects
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
BirdForum is the net's largest birding community dedicated to wild birds and birding, and is
absolutely FREE
!
Register for an account
to take part in lively discussions in the forum, post your pictures in the gallery and more.
Forums
Binoculars & Spotting Scopes
Spotting Scopes & tripod/heads
scopes-does size matter?
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="Alexis Powell" data-source="post: 3570114" data-attributes="member: 5327"><p>I have read all your posts, but I assure you with the greatest respect that you do not understand something important. Field of view (FOV) generally decreases as magnification increases, but the two are independent of each other to a fair amount. You are right that when you compare the view through any particular zoom eyepiece that it will have a wider true FOV at low power (making it easier to find things) than at high power. What you don't seem to understand is that a fixed wide-angle eyepiece can have a much wider FOV at a given magnification than a zoom would at that same magnification, or even when the zoom is set at a lower magnification. I use a fixed 30x wide field eyepiece with my Nikon scope. It provides a substantially wider view at 30x (the view is a circular area 126 ft across at 1000 yards) than does the available zoom at its lowest power of 25x (the view is a circular area 84 ft across at 1000 yards), so it is much easier to find birds with the 30x than with the zoom set to 25x. The numbers differ a bit from brand to brand, but this comparison is typical of many scope systems. Some of the new top-end zoom eyepieces are designed to have a fairly competitive FOV at each magnification compared to fixed power eyepieces, but most on the market do not. It is also the case that not all fixed power eyepieces are wide angle designs. A modern wide-angle zoom can do better than a non-wide fixed, but that is a comparison of rare occurrence.</p><p></p><p>--AP</p></blockquote><p></p>
[QUOTE="Alexis Powell, post: 3570114, member: 5327"] I have read all your posts, but I assure you with the greatest respect that you do not understand something important. Field of view (FOV) generally decreases as magnification increases, but the two are independent of each other to a fair amount. You are right that when you compare the view through any particular zoom eyepiece that it will have a wider true FOV at low power (making it easier to find things) than at high power. What you don't seem to understand is that a fixed wide-angle eyepiece can have a much wider FOV at a given magnification than a zoom would at that same magnification, or even when the zoom is set at a lower magnification. I use a fixed 30x wide field eyepiece with my Nikon scope. It provides a substantially wider view at 30x (the view is a circular area 126 ft across at 1000 yards) than does the available zoom at its lowest power of 25x (the view is a circular area 84 ft across at 1000 yards), so it is much easier to find birds with the 30x than with the zoom set to 25x. The numbers differ a bit from brand to brand, but this comparison is typical of many scope systems. Some of the new top-end zoom eyepieces are designed to have a fairly competitive FOV at each magnification compared to fixed power eyepieces, but most on the market do not. It is also the case that not all fixed power eyepieces are wide angle designs. A modern wide-angle zoom can do better than a non-wide fixed, but that is a comparison of rare occurrence. --AP [/QUOTE]
Insert quotes...
Verification
Post reply
Forums
Binoculars & Spotting Scopes
Spotting Scopes & tripod/heads
scopes-does size matter?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more...
Top