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Camera quality, please explain

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Hi, i know little about cctv cameras and wondered if someone could explain.

 

When ever i see any cctv video footage it always appears to be poor quality, cant see faces clear etc, seeing as cctv cameras can cost a lot of money why are the images so bad compared to say a £100 pocket camcorder?

 

Thanks to anyone that can explain.

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There are many reasons why the video could be so bad.

 

7 Poor placement of camera.

6 Bad lighting.

5 Wrong camera lens covering to much area.

4 Camera is low resolution.

3 Camera out of focus.

2 Recorder is low resolution.

 

And the number 1 reason for poor video quality, ... the owner of the system is a stupid cheap bastard!

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There are many reasons why the video could be so bad.

 

7 Poor placement of camera.

6 Bad lighting.

5 Wrong camera lens covering to much area.

4 Camera is low resolution.

3 Camera out of focus.

2 Recorder is low resolution.

 

And the number 1 reason for poor video quality, ... the owner of the system is a stupid cheap bastard!

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It's not usually the fault of the camera so much as the recorder - along with cheap cameras, typically go cheap recorders that record at far lower resolution than your pocket camcorder. Saving storage space is usually a consideration as well, so lower framerates and higher levels of compression are also common, whereas camcorders, regardless of the format used, typically run at the highest level of quality settings possible without worrying about the storage space (as an example, one hour of MiniDV video, at "SP" quality, takes about 25GB for space, while one hour of surveillance video can take as little as 100MB).

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It's not usually the fault of the camera so much as the recorder - along with cheap cameras, typically go cheap recorders that record at far lower resolution than your pocket camcorder. Saving storage space is usually a consideration as well, so lower framerates and higher levels of compression are also common, whereas camcorders, regardless of the format used, typically run at the highest level of quality settings possible without worrying about the storage space (as an example, one hour of MiniDV video, at "SP" quality, takes about 25GB for space, while one hour of surveillance video can take as little as 100MB).

 

Thank you, that explains it perfect

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