Rory, this isn't entirely true, though you bring up a good point which is differentiating between Color/Mono and Color/Mono with removeable IR cut filter. You're correct that the HQ1 540TVL sensor system from Sony does perform digital Color/Mono performance, which doesn't actually increase a camera's low light performance. This doesn't stop MANY manufacturers from calling Color/Mono cameras "Day/Night" cameras even though they're actually not.
True Day/Night performance comes from either cameras that have a two sensor system, with one sensor having an IR cut filter and the other without (very rare solution), or the more common solution for the CCTV industry which is a camera that switches from color to mono in low light and ALSO removes the IR cut filter to give the camera low light and IR response. This feature is available with the HQ1 540TVL sensor by some manufacturers, so you can actually have a 540 TVL camera that is true day/night.
As far as your dome specs go, check out the high-level specs on my new DM2/DR2 series plastic and rugged domes. I showed these at ASIS and they should go to beta in Late December, with launches in early February 2007.
-Available in 520TVL (SS2), 540TVL (HQ1) or our new UltraView 3 platforms. The SS2 and HQ1 flavors will be available in color/mono AND a Day/Night version with color/mono AND a removable IR cut filter. I'm also working to make a day/night version of our UltraView 3, but that'll be later in 2007
-All will include a secondary video out that is inside the bubble, so you can tune the camera without having to fish out the the BNC connector that's meant to go to your head unit. An adapter cable that converts this second video out to BNC will be included in the box.
-All will be 24VAC/12VDC power input.
-I have redesigned the plastic dome (DM2) to be the same size as the DR2, which is also the same size as our existing DR series. This means that both new platforms will be backward compatible with most of the existing DR mounts, including the DR-RWM wall mount, the DR-EP and DR-PM pendant mounts, and the DR-OCM and DR-ICM inside/outside corner mounts.
-Both the DR2 and DM2 will have polycarbonate bubbles with a swivalable captive shroud for concealing camera position.
-Both the DR2 and DM2 will have a TRUE 3-Axis gimble
-Both the DR2 and DM2 will come with adapter plates for easy single-gang and double-gang box installation
-UTP versions will be made available in mid Q2 2007
-There are a few other cool features to the camera, but I can't discuss them yet because there are patent applications on these features that are pending.
This release is the culimnation of about 12 months of me asking customers at every opportunity what we could do to improve our GE Security line of plastic and rugged domes.
Look for news on these to come in late December 2006 or early 2007.
Oh one thing I'd like to know is the expected street price of the cameras you spec. Doesn't do me much good to meet your specs if my price is too high. All I ask is that you be reasonable with your price/spec requests. Don't ask me, for example, for the feature list I just provided, in a camera that has a street price of $150, because it just won't happen.
Jason Spielfogel
Worldwide Product Manager - Fixed Cameras
GE Security
Hi Jason, New to forum and need help.
The question is about CCTV camera horizontal resolution.
For example, at 768 pixels (horizontal pixels per line array), the real single colour CCD chip resolution is approximately 70-80% of what the pixel count is. This is effect of the pixels mosaic composition, and because of the way interlaced scanning image is obtained in television.
Also when counting vertical lines, we count only the horizontal width equivalent to the vertical height of the monitor. The idea behind this is to have equal thickness of lines. We then have to multiply this by 3/4.
This will produce only 403-460HTVL maximum visual resolution.
Can you help to understand CCTV camera resolution (HTVL or pairs of lines) as listed in your Specifications (480HTVL up to 530HTVL)
please?
