Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Lenses
Wide-Angle
I want to try out NIkon's new 2.8mm lens!
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="aroy" data-source="post: 216826" data-attributes="member: 16090"><p>Here are some more explanations</p><p><a href="http://www.idigitalphoto.com/dictionary/retrofocus_lens" target="_blank">Definition of retrofocus lens - iDigitalPhoto Dictionary</a></p><p><a href="https://www.swpp.co.uk/glossary/retrofocus.htm" target="_blank">https://www.swpp.co.uk/glossary/retrofocus.htm</a></p><p><a href="https://data.epo.org/publication-server/rest/v1.0/publication-dates/19840509/patents/EP0107893NWA2/document.html" target="_blank">https://data.epo.org/publication-server/rest/v1.0/publication-dates/19840509/patents/EP0107893NWA2/document.html</a></p><p></p><p>In short the design is such that the convergence point of the light rays are behind the rear most element. Thus say for 10mm focal length the rays converge 10mm from the film/sensor, but the rear element may be 40-50mm away.</p></blockquote><p></p>
[QUOTE="aroy, post: 216826, member: 16090"] Here are some more explanations [url=http://www.idigitalphoto.com/dictionary/retrofocus_lens]Definition of retrofocus lens - iDigitalPhoto Dictionary[/url] [url]https://www.swpp.co.uk/glossary/retrofocus.htm[/url] [url]https://data.epo.org/publication-server/rest/v1.0/publication-dates/19840509/patents/EP0107893NWA2/document.html[/url] In short the design is such that the convergence point of the light rays are behind the rear most element. Thus say for 10mm focal length the rays converge 10mm from the film/sensor, but the rear element may be 40-50mm away. [/QUOTE]
Verification
Post reply
Forums
Lenses
Wide-Angle
I want to try out NIkon's new 2.8mm lens!
Top