CCTV cameras lenses type & Complete Defination! Difference among 2 8mm,4mm,6mm,8mm,12mm lenses !

CCTV cameras lenses type & Complete Defination! Difference among 2 8mm,4mm,6mm,8mm,12mm lenses !
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Given the condition that the lense of a CCTV camera is the same, the bigger the image sensor is, the wider the Angle of Coverage will be;
Given the condition that the size of the image sensor is the same, the higher the number of focal length of the lens, the narrower the Angle of Coverage will be.
Usually, the size of of image sensor of CCTV camera is 1/3", or 1/2.5"; the focal length of lens is 2.8mm, 3.6mm, 4mm, 6mm, 8mm, 12mm.
With 1/3" of image sensor, 2.8mm focal length will mean about 90° of coverage; 4mm focal length means about 70° coverage, 6mm means about 43.3°coverage, 12mm focal length translates to about 20.6° coverage.
Note that different image resolution will also slightly affect the angle of coverage
CCTV Lens Guide: Choosing a Security Camera Lens
Below is a guide we’ve created for the sole purpose of educating you on the various terms that go along with CCTV or security camera lenses. There are a lot of them, far more than are even described below, but it’s important because the lens is such a crucial part of your video surveillance system. Knowing which lens to choose can save you time, money, and will increase the likelihood of capturing exactly what you intend.
If you already know the specs of a particular lens, try it out on our lens calculator to discover the field of view the lens is capable of capturing.
Focal Length (mm)
The focal length (measured in “mm”) of a lens determines how far the camera can see. The most common focal length on security cameras is 3.6mm, which will allow for roughly a 72 degree field of view (FOV described below). This particular focal length works well for residential or small office surveillance applications.
If you can only learn one thing about security camera lenses, you should learn that the bigger the focal length, the farther away it can focus. The smaller the focal length, the wider the field of view.
Field of View (FOV)
Field of View is the area, in width, that the lens will allow you to see. If you hear the term “wide angle” then it will have a smaller lens, like 2.8mm. This means just what it sounds like, the picture will be wider. With a smaller focal length details are also more difficult to see. If you are capturing video in a normal sized room, maybe 20x20ft, then a wide angle lens will work just fine. If you need to capture a person’s face, then you’ll want to consider something with a larger focal length,
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[@ahmadfiaz7206]

Hi what the best CCTV camera set hikvision nvr or annke NVR please?

[@AhmedHasan-li1mi]

Thanks Sir, very good explanation

[@saistha6851]

Thank you for information.....

[@amitpunjani1426]

Thank you for your efforts bhai ! Great information .

[@priyankawaware7886]

Nice explanation sir.

[@sb7382]

Very useful information ji

[@mahendrasoni2260]

बहोत ही अछि जानकारी

[@satyaprakashtiwari1976]

Jabardast jankari

[@khanos73]

Very good video.

[@AbdulRahman-ql3mb]

Thanks sir

[@onestepup9950]

Make video on DVR vs NVR. Which one is better for budget setup and proper investment.

[@rameezrazaraza3496]

Nice.good information bhai.from hyderabad rameez.😊

[@daulatram1396]

Cau u help me Sir ? i want to change my camra lens

[@nareshp7325]

Hi sir am installed securus ip cams 3.6 mm but camera clarity is verry low how to do

[@rameshpawar1733]

Sir Honeywell pelco axis uniview camera kaha milega.

[@Sonukajju]

Sir mere ko jewelry shop ke liye cctv Lagrange h to kitne mp ka lgvaye or konsa model
20to 23000 ki range 2

[@venkatesh.854]

Hai, vehicle number recognise karne ke leiye konsa konsa brand aur kitna mpx and kitna lens ka use karna hai.plese help karo ispe.

[@virendragiripunje4781]

Nice information bro.. keep it up..go ahead... you have practical experience.... Yes.. always share it...

[@Yfmsecurity]

Thanks

[@johnphilip5054]

Brother konsa DVR, konsa camera, lena acha hey, mera ghar keliye 8-channel dvr, 4-bullet, and 4-dom camera, rekna chahethy, pls sent model numbers, and company name,🙏

[@johnphilip5054]

Thanks

[@gyanusoft14]

Sir by mistake I have bought 12 mm wide camera..how can I decrease it 3.8mm or 70 degrees

[@sandeepchakrawati9884]

Sir ds7108hghi f1 mai vedeo quality badane ka trika batao 2mp k hikvision k camre lage hai

[@Yfmsecurity]

Koi upay nahi hai, DVR hqhi wala chahiye

[@ssphomes]

Sir meraa bhi yahi question hai ki school bus & school eeco van mai konsa or kese CCTV camera lagana sahi rahega 🤔

[@yusufbandukiya3242]

Sir hikvision 32port ka dvr hai Ch No1 our ch no 2 me se Ch No1 Nahi dekhara Ch No2 dikhara
Lykin Ch No1 dusre Ch No per dekha problem kya hai solution batao pl

[@vipulsharma8587]

Please suggest varifocal dome/bullet camera available in market

[@Yfmsecurity]

Ok

[@KUMAETECH]

Sir aap jaipur k ho

[@rubysingha4428]

Agar hum phone mai koi application use kar rahe hai ya kisi se chat ker rahe hai toh bhi cctv camera mai dikhta hai ?? Camera CP plus cctv

[@shahadathussain6376]

Sir varifocal camera installation ka video banaen step by step

[@davindergill5877]

counter pe currency ache se dikhe ..konsa camera

[@riyasahamed4474]

Sir how to unbind IMOU WIFI Camera

[@KhurshidAlam-ce7ny]

Good explanation. For cash counter what mm required. Bcz needs a clear and nearest focus. Jai hind

[@Yfmsecurity]

4mm

[@KhurshidAlam-ce7ny]

@@Yfmsecurity 6 or 8 kiu nahi guru ji. Jai hind

[@KhurshidAlam-ce7ny]

@@Yfmsecurity konsa camera mic ke sath cash counter me sahi rahega. Size me small chahiye. Jai hind

[@bhaijaanvlogs6392]

Konsa mm lens best rahega

[@hirendrathakur9929]

सर आपकी व्हिडिओ काफी अच्ची हे
सर एक सवाल था जब सीसीटीव्ही को झूम करके हम किसिका फोटो लेते हे तो वो पिक्सल मे आती हे तो ऊस फोटो को क्लिअर केसे करे plz बताईये सर आपके जवाब का इंतजार रहेंगा

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Supar

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Sir schoolbus ke cctv installation ke bareme batao

[@Yfmsecurity]

Ok

[@AbdulRahman-ql3mb]

Sir aur eik bat hai mp kaise malum karna hai jaise k 1.3 also 2 .mp 2.4 3p a kaise malum hai karna hai batuo sir

[@goodmorningnews9478]

Note dekhen kelie kan sa camera lagega

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Bhai ek video bnaye ke kese night vision proper work kre .time ke sath cameras ki night vision kaam krna band kr deti hai

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Sir 6mm lens kitna meter, camera position se area chod kar dekhega. Kitna meter nazdik ka picture katega

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2 mp hkvis 16mm lens paris

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Bhai, 2.8 mm lens 2mp bullet camera kaha kharid sakte hai

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Ip me mushkil hai

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@@Yfmsecurity analog me sir

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Kya khaya tha sir ji dakar bahot aa ri thi apko.. kidding
waise sir kya koi aisa varifocal Lance ata hai jo dvr se km jada kiya ja sakta ho

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Please make video on school bus cctv installation

[@Yfmsecurity]

Ok

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@@Yfmsecurity thanks

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Wow video

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Hikvision
Difference Between DS - 2CE1ADOT-IRPF and DS - 2CE1ADOT-PIR- ?
& Night Vision मे Better कोणसा - ?

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Pir

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@@Yfmsecurity Thank You... Sirji 🙏

[@roshanhole]

@@Yfmsecurity Night मे भी clear है क्या..?

[@kakorijangin7055]

india me kisi ke paas available nahi hai ye?

[@interiorplus59]

Muje camera lagana hay koi aadami hay kya

[@MH15NashikKar]

hikvision ka dome 2mp premium or dome 2mp eco ye dono serious quality me kitna farak hai?

[@Yfmsecurity]

Led ka

[@vaibhavkarley2470]

Sir Plz suggest Mujhe Wd ki 1 tb Hdd 5400 RPM vendor laga rha hai mene 7200 RPM Hdd bola hai .uske pass 7200 RPM nhi hai. Plz bataye ise change kru ya 5400 RPM hi rahane dena chahiye .ya toshiba lg lena chahiye

[@Yfmsecurity]

No use Seagate surveillance

[@vaibhavkarley2470]

@@Yfmsecurity means Seagate me 5400 ya 7200 RPM kon si lena hai ??

[@kalpanatrivedi3627]

Camera me mobile ka msg dekhta h

[@Yfmsecurity]

Matlb

[@kalpanatrivedi3627]

@@Yfmsecurity sir Mai ye puch rhi agar cctv me mobile ka jo msg rhta h wo dikhata h kya

[@Yfmsecurity]

No

[@stephanoscharalambous5273]

English man English ,