Cameras

So lets go through some of the equipment used. A little more in depth. We will start at the beginning

FPV Camera :

The FPV camera is watch depicts the quality of the image you see, the colours reproduced and the field of view from the plane. There are many types, sizes and of course prices available to the FPV user. Here’s some examples of camera models used and liked by FPV users :

KX131

Specifications :

Sony 1/4 CCD color camera
Definition: 380 TV lines
FOV: 70°
Sensitivity: 1 lux
Camera power requirements: 5 volts
Total Current draw: Approx. 140ma
Weight: 28gr

SN777

Specifications:

1/3″ Sony Super HAD CCD Ⅱ
High-Resolution of 550 TVL
Fixed Board , Pinhole, Varifocal lens
Super Low Illumination of 0.05Lux
Extreme clear cutting edge picture
5V operation
Format PAL

WDR700

Specifications :

1/3″ Sony Super HAD CCD Ⅱ
High-Resolution of 550 TVL
3D DNR (3D Digital Noise Reduction)
Digital WDR
Digital Day & Night
Privacy Mask
OSD with Built-In Joystick Controller
12 Volt operation

The cameras are normally of only two working voltages, either 5 volts or 12 volts. 5 Volts cameras tend to leak less rf noise out but a lot of 12 volt cameras are equally as good. The camera has many variables between each model, some work well in low light other not so good.

Lux : Lux is a measure of light intensity. A camera lux rating is the minimum amount of light that will produce pictures. The lower the number the more sensitive the camera, a camera of say 0.05 lux will produce a very good picture in low light conditions. For normal FPV daylight flying this is not really an important factor as all will perform just the same in daylight. If you want to do some low light or night flying though a camera with very low Lu ratings are the best to get.

TVL : TVL is mentioned a lot, this is the TV lines output of the camera, also referred to as resolution. The number comes from how many dark and light lines can be counted in its picture horizontally. A camera of 380 TVL means that 170 distinct dark lines and 170 distinct white lines can be seen. Some FPV cameras are 380 TVL some 480, 540 etc etc The more line the bigger the image will be when recording.

What to expect from each ?
A 380 Tvl picture is ok but slightly blurry to the eye
A 420 Tvl is around Vhs quality
A 480 Tvl is S-Vhs
A 500+ Tvl should produce some very sharp and DVD quality pictures.

1/3″: This is the size of the capture lens, for FPV we use 1/3 or 1/2″ sizes

Lens:

Most cameras have slightly larger than standard field of view, so that the objects on the sides of the image appear at normal distance. Larger field of view of a lens also enhance the possibility of the fish-eye effect. For FPV use you want somewhere in the region of a 1.7 to a 3.6mm lens. The lower the number the greater the field of view the more suited it is for FPV use. Lens thread diameters are 12mm

Case: Some come cased with metal cases other are board type. The decision is purely personal, but myself i find if its case although slightly heavier the case provides a lot of protection in cash of crashes

Pal / NTSC: In the UK we use Pal format. Its the standard here, so whats the difference between the two ? Pal is  PAL has a resolution of 720×576 but lower frame rate 25 fps. NTSC on the other hand  has a resolution of 720×480 but higher frame rate of 29.97 fps. Most equipment is compatible with both systems but we tend to choose Pal for its better resolution.

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