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LENSES  

The lens is the most important part of your surveillance system.
Day-night cameras need D-N lenses with IR correction
Mega Pixel Cameras need MP Lenses.

Wide angle overviews are great for situational awareness
but for clear identification of subjects you need some "zoom"
 

                     
 
BOARD Lenses Japanese glass

  wide angle 2.1mm 4mm      6mm
 12mm
 16mm
 25mm
For well lit areas only

Low light  IR  4mm

       
Full range link
2009 Brochure
Vari-focal Brochure

FUJI Mega pixel [3]


 2.8mm to 12mm
 Specifications

Suit Arecont 1/2'' sensors		 Day night


2.7mm wide to 8mm
1/3'' sensors
Specifications		 Day night zoom

 5mm to 50mm 1/3''sensors
Specifications		 Long Range Surveillance


10 to 320mm
 Specifications

12-750mm RS-232 Control

 		      


 Full range link

 12X Optical Zoom example

 
       


Full Range link  

Catalogue

Model Codes
 

For Arecont IP Cameras:

H0514-MP 5mm
H2Z0414C-MP 4-8mm manual iris
HG2Z0414FC-MP 4-8mm Auto iris

M0814-MP 8mm
M1614-MP 16mm
M2514-MP 25mm
M5018-MP 50mm

 

 IR Corrected
1/2'' 4-10mm

45 deg Pin hole


 

 pinhole
Manual Zoom
Big Zoom
Vari-focal
Manual fixed

Lens Calculators  Fuji     Tamron    Computar    Axis IP cameras  Axis choosing the right lens  Arecont's Tools

      What's is a DAY-Night Lens ?  What's IR Correction?

The Day & Night camera lens is sensitive in the infrared region from 700nm -1000nm in wave length.
Day and infrared night images have a different focal points only a little but enough to make an image burry. [focus shift]
If a standard Day lens is installed outdoors the image blurs and needs to be refocused for night use.
An "IR corrected day night" lens works on the same principal you don't have to re-focus at night under Infrared illumination
Day Night lenses adopt a specialized optical glass and coatings and have extremely low longitudinal chromatic aberration
So you get a sharp picture day and night with no focus shift.

IR Cut Filters ?
Most mid to High End cameras will also have an "IR cut filter" option this is simply means the Infrared filter that blocks the suns
harsh rays during the day is removed at night time allow the infrared spectrum though.
There is a quite dramatic difference in picture quality and is well worth the extra cost, tho if your camera is in a brightly
lit area like a super-market you wont need it. On the other hand if there no light you will need an illuminator.
 
Can I use any lens on any camera ?
Yes and No some are backwards compatible,  you need to match up the sensor size with the lens [1/2 inch CCD sensor needs a 1/2 inch lens]
Fuji use this style chart to show what sensor can be used with what lens



Do I need a Megapixel lens for a Megapixel camera ?
Yes. The new Mega-pixel cameras require it because of the sensor size and resolution.
Some Old CCTV lenses will work but will be vastly under resolution.

  Need a really big lens the Raymax 20-2000mm can read a license plate at 1km away        Super-long range