Geberal PTZ question

[Securitymaster 0]

Why is it that almost every PTZ manufacturer that I have come across always use a 1/4" ccd, instead of a 1/3"? is it only cost, or is there another benefit from it?

[kandcorp 0]

I think one of the reasons is because they will get a better/furthur ZOOM since 1/4" is a smaller CCD. 1/3" CCD will give a wider FOV than 1/4" and I guess one of the main points of a PTZ is the ZOOOOM feature.

Edited December 7, 2005 by Guest

[rory 0]

the questions is why are the zoom camera modules that the PTZs use, mostly 1/4" ... Sony has progressive scan modules now in 1/2" ...800TVL, but the ones ive found with these chips are generally low zoom like 12x .. they have both VGA and composite outputs though ..

[kandcorp 0]

Rory, was I incorrect in what I said in my reply or are you just reiterating the question for future replies.

[rory 0]

actually i didnt see your post, but good points. Some of them even use 1/6" chips for extra zoom I was just pointing out that the PTZ manufacturers generally use other manufacturers OEM Zoom camera modules, or block cameras .. just for secu masters info ..

[kandcorp 0]

Ohh..OK

 

1/6"

Is that fairly new?

[rory 0]

right here bud ..

 

http://www.chori-america.com/FCB_EX78B.htm

http://www.sony.net/Products/SC-HP/new_tec/camera/super.html

 

more module cameras.

http://www.aegis-elec.com/products/sony-cam.html

[Securitymaster 0]

But the cost difference between building a 1/4" and a 1/2" has to be really big, since there is more glass involved.

 

Now don't forget, in china, they are making fake sony ccd chips now, I got to look at my links to find it, I think that this is why one can get cheapo ptz domes for around 600 nowdays.