From: "jterry94" <terryj@iit.edu>

Date: July 16, 2005 8:50:34 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: just wishing

Makes sense. You've got to like those security gurus. No offense to any security gurus out 

there. I would prefer progressive cameras for that application; less motion distortion. Of 

course, these are the people that made us pull out all of our wireless networks the other 

day due to a fear of someone putting up 3 foot parabolic antenna in the cemetery across 

from our building so they could steal the signal from inside our Faraday cage so I am not 

really high on security gurus right now. 

I pointed out that I was more afraid that the security people wouldn't notice people putting 

up a 3 foot parabolic antenna than I was of someone stealing the wireless signal. Didn't go 

over too well. 

Jeff

--- In Astro_IIDC@yahoogroups.com, Milton Aupperle <milton@o...> wrote:

Hi Jeff;

I think it's because of CCD cost. For example the color 1/3" CCD they  

use in the DSI was about 20% cheaper than the CCD used in a color  

1/4" Unibrain. However the monchrome 1/4" Unibrain CCD (much lower  

volumes) was about 300% more expensive than the 1/3" DSI Color CCD.

That's mainly because they produce a lot of those interlaced CCD's  

for the video industry (camcorders, security cameras etc.). I really  

suspect that the boom in low light Analog CCD cameras is largely due  

to 911 and security fears both for home and terrorism.

HTH..

 Milton J. Aupperle

President

ASC - Aupperle Services and Contracting

Mac Software (Drivers, Components and Application) Specialist

#1005 - 815 14th Avenue. S.W.

Calgary Alberta Canada T2R0N5

1-(403)-229-9456

milton@o...

www.outcastsoft.com

On 16-Jul-05, at 8:12 AM, jterry94 wrote:

--- In Astro_IIDC@yahoogroups.com, Milton Aupperle <milton@o...>  

wrote:

Hi Tim;

On 15-Jul-05, at 4:26 PM, Tim wrote:

The DSI and other cameras that use the interlaced Sony CCD variants

made for TV cameras are a PITA to work with if there is any  

motion in

the images. If your doing interlaced video fields for TV they are

fine, but not for full frame.

All the IIDC cameras I deal with use progressive scan CCD's so they

don't have that problem and this is the main reason I don't like

analog cameras much at all anymore.

TTYL..

I hate the #@@#$ interlaced chips. They progressive starlight  

express SXV-H9 and H9C are

so much easier to program. The M8C and M25 are a pain.

Is there a reason why interlaced chips are still the most common  

variant?

Jeff