Soundy 1 Posted January 28, 2010 Just came across this one, it's got some neat features! It's a small download (Windows only) and it's FREE! http://www.cam-techsecurity.co.uk/cctv/lens-calculator Share this post Link to post Share on other sites
ipman 0 Posted February 14, 2010 I downloaded this calculator and found an error in the horizontal angle of view calculation. It seems for any given parameters in this calculator horizontal angle = vertical * 4/3. This is wrong! In fact the correct formula for sensor with aspect ratio 4:3 is little bit more complicated: Horizontal Angle = 2 arcsin( sin(VerticalAngle/2) * 4 / 3) For example for camera with sensor format 1/3" and focal length 3mm all other tools show Vertical angle = 61.9; Horizontal Angle = 77.3 in this CamTech calculator Vertical angle = 61.9; Horizontal Angle = 82.4 Please click on images to enlarge. Correct example (IP Video System Design Tool): Share this post Link to post Share on other sites
Numb-nuts 1 Posted February 15, 2011 It'll be fun to see how accurate my camera positioning is or isn't. Thanks for sharing that info. Share this post Link to post Share on other sites
er1k1984 0 Posted June 14, 2011 Very nice thank you Share this post Link to post Share on other sites
Numb-nuts 1 Posted June 25, 2011 DUUUUUUH! I can't open it on my MACINTOSH boo hoo Share this post Link to post Share on other sites
rory 0 Posted June 25, 2011 DUUUUUUH! I can't open it on my MACINTOSH boo hoo http://winebottler.kronenberg.org Share this post Link to post Share on other sites
Aban-CCTV-Camera 0 Posted August 11, 2011 Great post, thank you. Share this post Link to post Share on other sites
sovan 0 Posted September 5, 2011 The page you requested could not be found. Share this post Link to post Share on other sites
Koke 0 Posted October 18, 2011 found it http://www.4shared.com/get/oSNTY4Pg/Cam-Tech_CCTV_Lens_Calculator.html Share this post Link to post Share on other sites
ssmith10pn 0 Posted February 5, 2012 The file link that you requested is not valid. Share this post Link to post Share on other sites
Stanislav 0 Posted March 30, 2012 See also CCTV Design Lens Calculator. Together with usual functions of Lens Calculators, it offers several new tools, such as calculating field of view projections in 3D, simulating camera resolution using photos and images including megapixel cameras up to hundreds of megapixels and other. CCTV Design Lens Calculator is free Share this post Link to post Share on other sites
Jeffkelvin34 0 Posted August 23, 2012 Thanks for the link! Share this post Link to post Share on other sites
n0fx 0 Posted October 18, 2012 If anyone needs the original program, I found it and uploaded to another file hosting company: hxxp://www.sendspace. com/file/9b6rhd (change hxxp to http and delete space after the period) Share this post Link to post Share on other sites
RIPE 0 Posted December 28, 2012 Graphic CCTV Lens Calculator is embedded on several security camera sites other than Cam-Tech. Check this to find a site that is still posting the free software: http://www.software4cctv.co.uk/Download1.htm Share this post Link to post Share on other sites
vamprocha 0 Posted March 9, 2014 hello friends already got me later someone can give me the link to download Share this post Link to post Share on other sites
fplenin 0 Posted April 30, 2014 Lot's of broken links... Is there any free and good software available? Third post says it haves an error Share this post Link to post Share on other sites
ipman 0 Posted April 30, 2014 There is our online lens calculator www.jvsg.com/online/ also you can use our 45 day trial of IP Video System Design Tool. Share this post Link to post Share on other sites
Numb-nuts 1 Posted May 2, 2014 If anyone needs the original program, I found it and uploaded to another file hosting company: hxxp://www.sendspace. com/file/9b6rhd (change hxxp to http and delete space after the period) wow talk about making life difficult. Try following your link even changing the xx for tt Life is just too short. Share this post Link to post Share on other sites
Stanislav 0 Posted October 4, 2014 What do you think about such Fields of view? What lens calculator can calculate them correctly? Share this post Link to post Share on other sites
SyconsciousAu 0 Posted March 4, 2015 I use this one. http://www.theiatech.com/calculator.php Share this post Link to post Share on other sites
ScriptX 0 Posted May 13, 2015 Here is Another from JVSG. Link : http://cctvdesign.ir/assets/img/cctvlenscalculator.swf Share this post Link to post Share on other sites
Stanislav 0 Posted May 18, 2015 Today, all Lens calculators and CCTV design software (except VideoCAD Professional 8.1) calculate view angles of wide angle lenses with errors, because they do not take into account the Lens distortion. About Lens Distortion Additional errors are expected in calculating the view angles of modern cameras because of the image sensor size is considered in inches from the time of vidicons not taking into account existence of the modern image sensors with aspect ratios different from 4:3 and/or using not whole pixel area for scanning. See Specifying active area size of the image sensor Share this post Link to post Share on other sites
