NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
May 19, 2021, 12:36:11 am *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
   Home   Help Search Login Register  
"If I have a thousand ideas and only one turns out to be good, I am satisfied." ..."Alfred Nobel(1833-1896, Swedish inventor, chemist, philanthropist)"
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 10191 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
"If I have a thousand ideas and only one turns out to be good, I am satisfied." ..."Alfred Nobel(1833-1896, Swedish inventor, chemist, philanthropist)"
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 5.066 seconds with 23 queries.since 2011/06/15