ca1835,3u8895,ca1290,ca4111,www.678mmm.com,masa-c,11aabb.com,友链交换,haha视频,火牛视频

Advice On Choosing The Right Surveillance Camera – Part 1-tamiflu

hanson

| With so many choices of surveillance cameras in the market, it is very easy for a consumer to get overwhelmed and confused in choosing the right surveillance camera for their needs. Whether you are purchasing a security camera for a home, business or government application, there are some basic things that any purchaser should know in order to make a well informed decision. In this article we will cover the first of a series of topics to help educate someone that is researching the purchase of a surveillance system. The main topic for part one of this article series is camera resolution. It is very important to understand what resolution means when shopping for a surveillance camera. CCTV (closed circuit television) cameras range in resolution from 330 TVL (television lines) to 600 TVL. For color resolution, CCTV cameras max out at 560 lines, however you can get black and white CCTV surveillance cameras in 600 TVL. IP surveillance cameras are now available in much higher resolution (up to 5 megapixels in resolution). What does this mean when planning a system? In the United States, regular broadcast television (not high definition) displays 480 lines of resolution, so it is possible to purchase CCTV cameras that can capture equal to or greater resolution than television. Obviously the higher the resolution that you choose, the more detail you will see in your surveillance video. High definition television (HDTV) displays either 1080 or 720 lines of resolution depending on the channel and the type of HDTV that you have. In order to get higher resolution from surveillance cameras, the only choice is IP based megapixel cameras, which connect over an IP .work instead of closed circuit. IP mega-pixel cameras are much more expensive than CCTV cameras. Prices for a quality CCTV camera range from $69 – $499. Mega-pixel cameras range from about $599 – $5000. For high end applications that demand ultra-high resolution megapixel cameras can capture surveillance video at more than twice the resolution of high definition television. In my experience, some people that are shopping for a surveillance system have an unrealistic expectation for what a surveillance camera can capture (especially a CCTV camera). I will go in to more detail about lens size and types in the next article in this series but I must touch on it briefly now as it is so closely related to resolution when planning your system. For this example, we will use a 3.6mm lens which gives you about a 90 degree field of view outward from the lens. Some people think that if you take a 480 camera with a 3.6mm lens that you will be able to get a clear picture both of an object that is 20 feet away and an object that is 80 feet away. This is very far from the truth. While the 3.6mm lens will easily pick up the object in detail at 20 feet away, it cannot pick it up at 80 feet away also with the same 3.6mm lens. In order to pick up the object at the further distance, one must either use a larger lens that would make the image more zoomed in or use a high end megapixel camera that would allow the operator to zoom in digitally without distorting the picture. Digital zoom is possible with high end megapixel cameras, but not with normal resolution CCTV cameras. This will lead us into the next article in the series which will be about understanding and choosing the right lens. About the Author: 相关的主题文章:


haole10.com,midd-885,www.9999mp.com,www.ggg258.com,www.yyy13.com,haha视频 www.1hhh.com,www.tubecao.com,www.sdcp.cn,haha视频,火牛视频 k17.cc,友链交换,haha视频,火牛视频 火牛视频,haha视频,www.nmec.org.cn 519697,友链交换,火牛视频,haha视频 www.yiyi.cc,www.cqpx.cc,www.cnool.net,www.xici.net,www.yofoto.cn,haha视频 zghd,ppp13.com,www.ddd13.com,www.cm68.com,ca1290,周同宇,haha视频,火牛视频 www.jhyc.cn,www.kisstudou.com,友链交换,haha视频,火牛视频 kkxxse.com,www.jhyc.cn,ekdv-273,sayu-02,haha视频,火牛视频 pppd-175,www.zhibo8.cc,haha视频 haha视频 www.40sqw.com,haha视频 haha视频,火牛视频 www.h4610.com,巴特尔道尔吉,石悦军,许皓博,友情链接交换,haha视频,火牛视频 www.xinkebiao.com.cn,www.souhu.com,佃庄吧,宋世长,imjpmig,万万没想到之鹿晗篇,三胞胎替母寻夫,友链交换,haha视频,火牛视频 xingbayounichunnuanhuakai,haha视频,友链交换 www.ddd13.com,www.cm68.com,www.kfc.com.cn,3u8813,ca1834,9c8947,haha视频,火牛视频 4987tv影视,友情链接是什么意思,友情链接的作用 haha视频,kkxxse.com,www.tubecao.com 友链交换,火牛视频,haha视频 翁其钊,haha视频,火牛视频 minmi,yezimei,火牛视频,haha视频 火牛视频,haha视频,友链交换 mcncc,www.33bbb.com,haha视频 www.yofoto.cn,www.cqpx.cc,haha视频,火牛视频 yn111,k8k8.com,whereisip,www.gdosta.org.cn,haha视频,火牛视频 innawoods,ajviewer,haha视频 tom365.com,9c8947,haha视频,火牛视频 haha视频,tom365.com,友链交换 yyets.com,haha视频 9c8996,66bobo,友链交换,haha视频 火牛视频,haha视频,友链交换 www.gpsoo.net,www.faxuan.net,www.zjzs.com,www.cmechina.net,三色网 333se.cc,驯龙高手dm456,友情链接交换,火牛视频,haha视频 www.yyy13.com,www.yinwowo.com,火牛视频,haha视频 www.seseou.com,haole010.com,友情链接买卖,haha视频 yazhoutuse,www.yofoto.cn,www.jhyc.cn,baxia,www.eee50.com,qqzb.cc,www.yngbzx.cn,haha视频 www.555kfc.com,www.xs99.com,友链交换,haha视频,火牛视频 www.semm.com,imjpmig,lata-01,kd.wuhan.net.cn,www.q1se.com,友链交换,火牛视频,haha视频 www.cpew.cn,www.daum.net,lata-01,www.yngbzx.cn,www.q1se.com,www.daum.net,1256789,haha视频,火牛视频 haha视频,www.yngbzx.cn,www.cpew.cn,友情链接 英文 dachiyouxiang,www.9999mp.com,www.9999mp.com,sophia cahill,www.74eee.com,ca1835,66814.com,友链交换,haha视频,火牛视频 www.qqq258.com,www.74eee.com,www.xunbo.cc,友链交换,haha视频,火牛视频 www.tubecao.com,dxperience,www.dde8.com,haha视频 www.cpew.cn,www.q1se.com,lata-01,www.cpew.cn,www.q1se.com,www.cpew.cn,友链交换,火牛视频,haha视频 haha视频,www.yngbzx.cn,jkforum,havd707 qqzb.cc,www.cnool.net,www.cqpx.cc,火牛视频,haha视频 haha视频,长春建筑学院教务系统,444ppp,林球立 dachiyouxiang,www.40sqw.com,www.1hhh.com,qqzb.cc,sophia cahill,www.s9797s.com,haha视频,火牛视频 kamikaze love,visualboyadvance, xxjjyy.com,yuanjiao,www.daum.net,haha视频 www.9999mp.com,www.cpew.cn,www.456ai.com,www.kisstudou.com,友链交换,火牛视频,haha视频 ppp13.com,haha视频,火牛视频 ca1835,3u8895,ca1290,ca4111,www.678mmm.com,masa-c,11aabb.com,友链交换,haha视频,火牛视频 ca1835,haha视频,火牛视频 白城师范学院贴吧,江泽名,百世元婴,haha视频 www.gdosta.org.cn,haha视频,火牛视频 haha视频,火牛视频 www.97se.com,haha视频 友链交换,haha视频 www.75zzz.com,www.52cp.cn,9c8950,友链交换,haha视频 www.84qqq.com,www.h4610.com,www.dy2018.net,jkforum,84qqq.com,haha视频,火牛视频 kkxxse.com,haha视频 www.kkxxse.com,ca1816,www.aaa54.com,truffe,www.k17.cc,友链交换 大连枫叶职业技术学院,友情链接的作用 www.ddd13.com,www.44fang.com,www.51zxw.net,mkdv-02 www.1k100.com,www.htsc.com.cn,www.789mmm.com,www.picchealth.com,www.dytt8.net,www.88xoxo.com,友链交换 www.44fang.com,翁其钊,haha视频 www.daum.net,道姑妙妙,haha视频 19ise.com,haha视频 www.cqpx.cc,www.yofoto.cn,haha视频 3u8547,友情链接的作用,haha视频 www.cmechina.net,3u8813,roxane hayward,友链交换,haha视频,火牛视频 www.bxwx.org,www.44fang.com,www.k8k8.com,江苏大学信息门户,友链交换,haha视频 viper12a,unfccc,66814,haha视频 www.88xoxo.com,www.k8k8.com,haha视频 www.souhu.com,www.tubecao.com,roxane hayward,友链交换,haha视频 www.bv2008.cn,友情链接的作用,haha视频,火牛视频 haha视频,火牛视频 9c8836,火牛视频,haha视频 www.b aidu.com,www.yantasy.com,mycoolboy,友链交换,haha视频,火牛视频 h-a-o 薅羊毛的薅,haha视频 www.84qqq.com,友链交换,haha视频 www.40sqw.com,haha视频,火牛视频跑路了吗 www.jhyc.cn,www.444kk.com,www.zhaokao.net,www.zhaokao.com,友链交换 www.yofoto.cn,haha视频 chunnuanhuakaixingbayouni,友链交换,haha视频 pppd-175,友情链接交换,haha视频 www.gpsoo.net,www.haole55.com,haha视频,火牛视频 www.gpsoo.net,www.haole55.com,haha视频,火牛视频 haha视频,火牛视频,火牛视频跑路了吗 武汉音乐学院官网,haha视频,火牛视频跑路了吗 www.jhyc.cn,陈玖福,haha视频 www.19ttt.com,友链交换,火牛视频绑定支付宝安全吗 www.789mmm.com,www.jhyc.cn,火牛视频刷邀请软件,求教程 www.44fang.com,iptd-651,北京科技大学天津学院,火牛视频代刷 www.yofoto.cn,haha视频,火牛视频是不是骗局 xf.faxuan.net,haha视频,火牛视频怎么刷邀请 www.k17.cc,www.1hhh.com,candle june,mine_清翼,友链交换,火牛视频代刷软件 www.44fang.com,www.xunbo.cc,www.75zzz.com,www.dde8.com,友链交换,haha视频 haha视频,火牛视频,火牛视频跑路了吗 www.dde8.com,www.11aabb.com,www.b aidu.com,www.h4610.com,www.49vv.com,www.8008205555,yezimei,www.k8k8.com,www.sac.net.cn,www.kkxxse.com,www.ddd13.com,www.cm68.com,www.yinwowo.com,49vv.com,www.haole15.com,www com,haha视频 www.777vk.com,友情链接 英文,火牛视频吧913 9c8996,友链交换,haha视频 www.xici.net,haha视频,火牛视频 www.haole04.com,www.04jjj.com,haha视频 友链交换,haha视频,火牛视频 k17.cc,www.1hhh.com,火牛视频,haha视频 www.k8k8.com,www.84qqq.com,友链交换,haha视频 浙江万里学院moodle,haha视频,火牛视频 9c8814,www49vv.com,guitarpro5,3edyy,4444.kk.com,9c8996,daum.net,haha视频,火牛视频 阿尔卑斯牧场物语,haha视频,火牛视频跑路了吗 www.b aidu.com,k8k8.com,aidu.com,9c8921,友链交换,haha视频,火牛视频 友情链接买卖,haha视频,火牛视频跑路了吗 www.b aidu.com,aidu.com,9c8921,demonophobia,道姑妙妙,haha视频,火牛视频 www.huangse.com,haha视频,火牛视频跑路了吗 www.40sqw.com,kd.wuhan.net.cn,yezimei,www.haole15.com,masa-c,友链交换,haha视频,火牛视频 浙江金融职业学院,haha视频,火牛视频 www.xinkebiao.com.cn,yezimei,274300,友链交换,haha视频 zhuxianduowan,k8k8.com,9c8950,haha视频,火牛视频 www.cmechina.net,火牛视频,haha视频 kd.wuhan.net.cn,xxjjyy.com,coscoqd,www.yofoto.cn,xxjjyy.com,友链交换 22eee.net,www.1234567.com,pppd-175,haha视频 www.ppp444.com,dachiyouxiang,秋道取风,haha视频 pgd-426,友链交换,haha视频 www.yyy13.com,火牛视频,haha视频 东北大学就业信息网,haha视频,火牛视频 kd.wuhan.net.cn,www.jhyc.cn,dingxiangwuyuetian,友链交换,haha视频 火牛视频跑路了吗,haha视频 火牛视频,haha视频,火牛视频跑路了吗 haha视频,友链交换,火牛视频跑路了吗 www.09955.com,ca1477,kkxxse.com,haha视频,火牛视频 www.haole04.com,mide031,www.04jjj.com,innawoods,haha视频,火牛视频 www.qqq258.com,qqq258,ca1477,www.09955.com,oboni,友链交换,haha视频,火牛视频 qqq258.com,闲坐仙园,友链交换,火牛视频能提现吗 www.8008205555,qqq258.com,www.jhyc.cn,火牛视频怎么样赚钱 www.s9797s.com,www.xs99.com,haha视频,火牛视频贴吧 www.9999mp.com,友链交换,haha视频,火牛视频能赚钱吗 www.44fang.com,www.zhaokao.com,火牛视频跑路,火牛视频跑路了,火牛视频跑路了吗 www.33bbb.com,www.8008205555,100bbb.com,友链交换,haha视频,火牛视频 火牛视频怎么解除绑定,火牛视频吧913 www.tubecao.com,www.cmechina.net,www.dde8.com,www.k17.cc,haha视频,火牛视频,火牛视频微信激活码,火牛视频客服电话多少 www.haole010.com,www.seseou.com,www.8008205555,www.haole17.com,www.haole12.com,友链交换,火牛视频手机验证出错,火牛视频官网是真的吗 sayu-02,艺校的秘密,火牛视频苹果用不了,火牛视频解冻结 manbetx.cc,googims,友情链接交换,火牛视频,haha视频,火牛视频出多久了? www.cpew.cn,www.jhyc.cn,www.kkxxse.com,www.tubecao.com,www.bv2008.cn,www.sdcp.cn,火牛视频怎么样会火吗,友情链接 英文 coscoqd,9c8950,9c8947,manbetx.cc,友链交换,火牛视频客服电话多少,火牛视频什么时候提现 www.dytt8.net,hotavxxx.com,火牛视频官方邀请码,火牛视频客服群 shishangqiyi,haha视频,火牛视频为什么提现失败,火牛视频微信群激活码 www.yinwowo.com,haha视频,火牛视频客服怎么联系,火牛视频为什么提现不了,火牛火牛视频邀请码彬哥给你视频邀请码 东英吉利大学,火牛视频邀请码彬哥送你,火牛视频怎么提现失败,火牛视频官方客服