NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
May 18, 2021, 11:56:09 pm *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
   Home   Help Search Login Register  
An interdisciplinary approach. ...Wisdom
Google Bookmarks Yahoo My Web MSN Live Netscape Del.icio.us FURL Stumble Upon Delirious Ask FaceBook

Pages: [1]   Go Down
Author Topic: A lens combination question  (Read 10190 times)
0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
Les Bradley
Offline Offline

Posts: 1

Embed this message
on: July 31, 2008, 10:31:29 pm »

I've been reading about lenses, studying optics applets, etc., but I'm still missing how to figure this out:

I have a regular, 35mm film camera with a normal, 50mm, lens.  What are my options for placing a lens element in front of the regular lens (away from the film plane), to achieve either a more telephoto (longer focal length) or a more wide angle (shorter focal length) image?  I just can't picture in my mind what the rays for such a setup would look like.

I'm aware that one can place magnifying adapters between the camera's lens and the camera body, but I want to work with a camera whose lens cannot be removed.

I have a few different camera lens assemblies for my 35mm camera I can experiment with.  I have experimented with various arrangements without achieving a useful effect.  There is probably a simple answer staring me in the face, but I'm having a problem conceptualizing it.

My ultimate goal is to experiment with a digital camera, placing some lens in front of the camera's lens.  I have a Canon PowerShot A580.  The lens is a 4x zoom, 5.8-23.2mm, 1:2.6-5.5

Why would I want to expand on the capabilities of my Canon point-and-shoot?  I need more control over image magnification, and I want to better understand the optics principles involved!

I mentioned the 35mm camera first, because I have more pieces to experiment with.

I have purchased an assortment of 38mm diameter lenses from Edmund's Scientific (double-concave F10, F15, F20; double-convex F5, F10, F15, F20, F30) and have a few other larger diameter lenses I've collected over the years.

What's the concept that I'm missing?  Thanks!
Offline Offline

Posts: 1

Embed this message
Reply #1 on: April 20, 2012, 04:44:27 pm »

SimplePortal 2.3.3 | Treasury 2.08 ... Ist es eigentlich Non-Canon, dass Non-Canon nicht Canon ist, weil Canon ...
Offline Offline

Posts: 2

Embed this message
Reply #2 on: November 18, 2019, 03:05:04 pm »

Your knowledge allows me to move on, no matter how much trouble.
Pages: [1]   Go Up
An interdisciplinary approach. ...Wisdom
Jump to:  

Related Topics
Subject Started by Replies Views Last post
Pulley Question
Bitupon 3 23318 Last post August 24, 2011, 12:19:44 pm
by melody
pressure question
m_noha 1 8638 Last post July 20, 2015, 04:47:26 pm
by RandallJasper
Physlets Optics java applet: A simple object on the left of the lens and a lens
Collaborative Community of EJS
lookang 0 9639 Last post September 02, 2008, 01:47:38 pm
by lookang
Question regarding waves.
Question related to Physics or physics related simulation
leeyiren 3 6215 Last post January 11, 2010, 08:20:10 pm
by Fu-Kwun Hwang
simultaneous combination of lenses and mirrors (with images)
Request for physics Simulations
sen-h 9 12768 Last post July 24, 2018, 04:04:19 pm
by sophiahustler
Powered by MySQL Powered by PHP Powered by SMF 1.1.13 | SMF © 2006-2011, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
Page created in 0.054 seconds with 22 queries.since 2011/06/15