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  1. Hi All, New member to SGL but have been a visual observer for a while. I'm planning on doing some EAA with the pupils I teach and thought I should check the current options for cheap CCTV/cameras suitable for the job. I am well aware of the famous CCD webcams and box cameras (Phillips SPC 900, LN 300, SCB 2000 and SCB 4000). I own two SCB-2000 with IR window removed but i've never quite liked the quality of the video. In looking for a cheap alternative to the Revolution Imager (fantastic product with the kit) as I am here in the UK and it might cost me a bit to have it shipper over (coming to ~£250), i came across the actual body of the camera (for those looking to go without the full kit and need the camera only as some of us already own reducers/UTC remotes etc): http://www.aliexpress.com/item/Mini-HD-700TVL-Sony-CCD-CCTV-Security-2-8mm-lens-Wide-Angle-Auto-Varifocal-PCB-Box/32683730536.html?spm=2114.01010108.3.275.Ugj0on&ws_ab_test=searchweb201556_10,searchweb201602_4_10057_10056_10055_10049_10017_405_404_10059_10058_10040_10060,searchweb201603_6&btsid=36adc86b-2bb8-4371-9c78-f3b88e26bad7 I also managed to come across some interesting cameras sporting the Sony 178 CMOS sensors. These are the same specification as being offered with the new range of QHY5L-IIIs and the CCTVs themselves have a USB port on the back (finally): http://www.aliexpress.com/item/POE-CCTV-Surveillance-Camera-2560-1920-Hi3516A-1-2-SONY-178-CMOS-H-265-5-0mp/32576468632.html?spm=2114.01010108.3.125.qQyZxZ&ws_ab_test=searchweb201556_10,searchweb201602_4_10057_10056_10055_10049_10017_405_404_10059_10058_10040_10060,searchweb201603_6&btsid=35cd2717-5e13-46b1-8064-320ab754e0b9 The specs of this next camera are very interesting. It suggests an incredibly sensitive camera (1/3" Super Sony HAD II) that is on paper is much better than the Revolution Imager/LN300 (1/3" Sony 811 CCD): http://www.aliexpress.com/item/1-3-Sony-CCD-700TVL-EFFIO-E-Super-Low-light-Professional-Box-Camera-with-2-8/32685517159.html?spm=2114.01010108.3.148.txXtqB&ws_ab_test=searchweb201556_10,searchweb201602_4_10057_10056_10055_10049_10017_405_404_10059_10058_10040_10060,searchweb201603_6&btsid=bbd2bed9-ef3e-462e-b88b-c76b8ba57bcd Questions: 1.What do you guys think of these options listed above? 2.Are the CMOS sensors approaching the sensitivity and dark noise of the previous Sony HADs? 3.At the price of £130 compared to +£300 for the QHY5L-IIIs, is this a bargain or is the internal circuitry unable to provide the clever control required for EAA (can this be overcome with processing?). Lastly, how can one know/tell if a CCTV camera has sense-up option? is it the electronic shutter or something that the manufacturer has to mention in the specs specifically? Many thanks in advance for your contributions. Astro_will
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