Featured Link
| How to Pick the Right Camera Lens |
 |
 |
 |
| Written by John Lewis |
| Thursday, 29 December 2011 11:09 |
|
When constructing a surveillance system to your house or enterprise a little bit planning can go a long way in making sure you find the proper safety camera and CCTV lens combo. By heeding a few of these tips and gaining some data; you will make it that much simpler to search out the proper CCTV lens.
When constructing a surveillance system to your house or enterprise a little bit planning can go a long way in making sure you find the proper safety camera and CCTV lens combo. By heeding a few of these tips and gaining some data; you will make it that much simpler to search out the proper CCTV lens. Lens Selection Usually Drives Digital camera Selection The type of CCTV lens you choose to use with your safety camera can usually drive the kind of camera you will use as well. The rationale for this is due to the fact that totally different fashion safety cameras support totally different format lenses. If you have already got a safety camera make sure you know what kind of lenses it supports. For instance a mini camera is unlikely to support a zoom or motorized kind lens; whereas a C/CS mount kind safety camera would. The C/CS mount camera nonetheless would not support M12, M9, or different forms of mini CCTV lenses. CCTV Lens Focal Size To determine what focal size you will want you can use a lens calculator. You'll first need to assume a hard and fast width of view at a selected distance, and then plug this information into the lens calculator to determine what focal size is greatest suited on your application. Normally a quick google search will help you find a lens calculator for the different format CCTV lenses on the market similar to 1/3", 2/3", 1/4", etc... Now something you must consider is that after you determine your focal size you could determine on whether you need a fixed focal size or a varifocal kind CCTV lens. The reply to this hinges on should you plan on altering the view at all. If you would like to have the ability to change the view; then you must discover a varifocal kind lens containing your needed size in its range. In the event you don't need to change the view of your camera in any respect; then it might be smart to simply persist with a set focal length. Realizing The C/CS Mount Lens Difference In relation to box type safety cameras, they're categorized into 2 mounting varieties; C or CS mount. Many of the trendy cameras you see today use the CS mount format as a result of it allows for the usage of both C and CS CCTV lenses. To have the ability to use a C mount lens on a CS mount safety camera you'll have to be sure you might have the right 5mm adapter ring to allow the lens to get the right distance from the imager. Be warned nonetheless that if this ring is present when you might have your CS mount lens mounted it will not enable for a proper focus, and it could probably harm your CCD imager. However a CS mount CCTV lens can't be used with a C mount safety camera, as it will not be able to get close enough to the imager to realize a proper focus. Optical Zoom vs Digital Zoom This matter is somewhat more related to the zoom CCTV lenses and the capabilities discovered on the camera, but it's one thing good to know when coping with a zoom capable safety camera and lens. Optical zoom is usually the better of the two and it is your camera/lenses ability to carry the image in front of you closer with out loss of resolution. Digital Zoom is your camera simply enlarging a portion of the picture you see and showing it to you. This system leads to a loss of picture quality. This post is written by James Anderson, he is a web enthusiast and ingenious blogger who loves to write about many different topics, such as digitalrev coupon etc. |