fas 0 Posted June 8, 2006 The cameras I am interested in come with a 4mm lens standard, but can be upgraded to a 4~9mm lens. Most cameras have a 3.5mm lens. How much wider of a view will a 9mm lens give, and does this mean the camera angle can be changed by turing the lens? Thanks. Share this post Link to post Share on other sites
VST_Man 1 Posted June 8, 2006 9mm will give a wider than 4m....yes it is adjustable. Share this post Link to post Share on other sites
rapid 0 Posted June 9, 2006 Sorry VST_Man....I think you meant to say 4mm is wider than 9mm? The higher the focal length of the lens, the narrower the field of view & the larger the target appears. Share this post Link to post Share on other sites
securitymonster 0 Posted June 9, 2006 Yes, a 4mm is wider than a 9mm. I think VST knew that, he just needs grammer check... Also when comparing cameras, make sure your comparing a 1/3" sensor to a 1/3" and not a 1/4", and vice versa. Share this post Link to post Share on other sites
fas 0 Posted June 9, 2006 ok, now I'm confused. I want the view from the cameras to be a wide angle. In that case, do I need a 4-9mm variable lens, or just the 4mm lens? I only need the 4mm lens, right? 9mm would give me a more narrow view, correct? Are there any examples on the net of what different mm lenses look like in actual pictures? I have found a few that show frames per second on video, but I have never found examples of what the picture looks like with various size lenses. Share this post Link to post Share on other sites
AVCONSULTING 0 Posted June 9, 2006 If the price difference is small then get the vari-focal since it gives you more flexibility in setting your scene width. Otherwise if you just want the widest angle stick with the 4mm. Share this post Link to post Share on other sites
securitymonster 0 Posted June 9, 2006 Yes, if you just want wide angle, get the 4mm lens. 3.6mm 6.0mm 8.0mm 12mm 16mm Share this post Link to post Share on other sites
rory 0 Posted June 9, 2006 LOL, that 3.6mm looks like a 2.8mm, only flipped .. normally the roundness is the other way around .. Share this post Link to post Share on other sites
Securitymaster 0 Posted June 9, 2006 Very nice Monster. Share this post Link to post Share on other sites
fas 0 Posted June 10, 2006 Thanks for the pics monster. Share this post Link to post Share on other sites
VST_Man 1 Posted June 10, 2006 sorry.......I knew better.....just send me back to attic infiltration school. Share this post Link to post Share on other sites
JMANOFNVS 0 Posted June 11, 2006 Damn !!!!!!!!!!!!!!!I hope this was a joke post right??? 9mm wider then 4mm Share this post Link to post Share on other sites
spytown 0 Posted June 20, 2006 here is the full image strip between 2.9 - 16mm comparison http://site.spytowne.com/images/lensimages.jpg Share this post Link to post Share on other sites
securitymonster 0 Posted June 20, 2006 here is the full image strip between 2.9 - 16mm comparison http://site.spytowne.com/images/lensimages.jpg Those pictures look familiar! Share this post Link to post Share on other sites
