Click here if you are having trouble logging into the forums
Privacy Policy |
Please read our Terms
of Service | Signup and
Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User
EdZ
Professor EdZ
Reged: 02/15/02
Posts: 12568
Loc: Cumberland, R I , USA42N71.4W
|
Re: Undersized prisms - the myth
06/18/08 10:34 PM
|
|
|
Actually Peter, there aren't too many f/6 binoculars. The BT100 is f/6.2. Vixen makes an f/11. There's a few others. Of all the fixed power binoculars I've tested, none were more than f/5.1. Most were between f/3.8 and f/4.2. All the 80s and 100s were between f/4.4 and f/5.1.
For a 100mm binocular to be f/3.5 it would have to be about 12" or shorter. For it to be f/6 it would need to be about 21 inches long, (both not including shields).
edz
--------------------
Teach a kid something today. The feeling you'll get is one of life's greatest rewards.
member#21
|
|
9 registered and 27 anonymous users are browsing this forum.
Moderator: EdZ
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Rating:
Thread views: 1149
|
|
|
|
|
|
|
Previous
Index
Next
Flat
Edit
Reply
Quote
