Comparing hispeed lenses-Full apertures

Started Sep 15, 2011 | Discussions thread
thorley
New MemberPosts: 24
Like?
Re: Comparing hispeed lenses-Full apertures
In reply to kb2zuz, Sep 23, 2011

F stop number is ratio of focal length

example 100mm F2 will have a 50mm aperture.

2x 50mm =100mm

Simple !!!

http://www.thorley.com.au/
--
Always looking to create something different
Nick

Reply   Reply with quote   Complain
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow