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Hi guys, I got this cctv camera: EXELON GHN-A955 700 TVL Color Box Camera with 3D DNR, ICR, SENS-UP, DUAL power [edit by mod-store link removed] and I am wondering if I should buy this expensive lens for it Pentax C70403PS 1/3" CS Mount 4mm F2.0 Pinhole Lens with Auto Iris DC [edit by mod-store link removed] My goal is to achieve as good as possible low light videos with the setting pinhole lens + camera. I know that the camera should achieve these low lux capability: Min. Illumination 0.1Lux@F1.2 (Color mode) / 0.0003Lux (Sense up) the problem is that the pinhole lens I pointed u to buy is a F2.0 lens How much would I lose in lux using the F2.0 lens ? There are F1.0 pinhole lenses, but they are NOT auto iris...I need an auto iris lens so that I can get videos under every light conditions. Any suggestion please ? Also the lens above is CS, many other cameras are C compatible. Would be a problem later on to use the lens above that is a cs mount to c mount cctv cameras ? I know there are CS to C adapters, but will they giving vignetting on 1/3" sensors ? I think the lens above is good for 1/3" sensors only... Thank you so much cctvguy is offline Reply With Quote

Image Sensor 1/3" Super HAD II CCD Total Pixels 811(H) x 508(V) Effective Pixels 768(H) x 494(V) Scanning System 2 : 1 Interlace 525 Lines / 60 Fields / 30 Frames Synchronization Internal / Line Lock Scanning Frequency Horizontal : 15,734KHz / Vertical : 59.94Hz Horizontal Resolution 700TV Lines (Color) / 750 TV Lines (B/W) Min. Illumination 0.1Lux@F1.2 (Color mode) / 0.0003Lux (Sense up) S / N Ratio (Y signal) 52dB (AGC off, Weight on) Video Output 1.0Vp-p / 75 Ω (Video 0.714Vp-p, Sync 0.286Vp-p) OPERATION OSD Multi-language support Camera Title On / Off Day & Night True D/N ; Auto / Color / BW / Ext ICR (IR Cut Filter Removable) Yes WDR (Wide Dynamic Range) Low Frame; On / Off / Auto (WDR Lever, Weight) Digital Zoom On / Off selectable (1.0X ~ 10X) Back Light Compensation BLC, LWDR, HLC(ON/OFF) Gain Control Low / High / Off White Balance ATW(2,500K ~ 9,500 K)/MANUAL/AWC Electronic Shutter Speed Auto / Normal (1/60 - 1/100,000) / Flickerless Sense-up (Frame Integration) On / Off (2X ~ 256X) RS-485 interface PELCO-D, PELCO-P protocol support Super DNR 3D-DNR Low / Middle / High / Off selectable Digital Image Stabilizer (DIS) On / Off Motion Detection On / Off(240 Block) Privacy Masking On / Off (8 Zones) Mirror / Flip Reverse Sharpness On / Off selectable (Level Adjustable) ENVIRONMENTAL Operating Temperature -20 C ~ +60 C Operating Humidity 10% ~ 80% RH MECHANICAL Ingress Protection N/A Dimensions 1.96(W) x 2.24(H) x 3.54(D) inch Weight 0.66 lb ELECTRICAL Power Source 24V AC / 12V DC (10%) Power Consumption Max. 150mA (at 12V DC) The Pentax C70403PS is a 4mm pinhole lens for use with 1/3" CCTV cameras in security and machine vision imaging applications. It incorporates advanced optical elements to ensure excellent image sharpness and superb light conductivity. It is also equipped with an auto iris function so that it can be used in areas with changing amounts of light. Its durable design also means that users will get long-term dependable performance in a variety of industrial operating environments. Imager Size 1/3" Mount Type CS Focal Length 4mm Aperture F2.0 Iris Operation Auto Iris DC Focus Operation Manual Horizontal Field-of-View 1/4": 51.24 1/3": 68.47 Minimum Object Distance (M.O.D.) 30cm Filter Size N/A Dimensions (WxHxD) 1.5 x 1.7 x 2.6" (37 x 42 x 66mm) Weight 2.8 oz (79 g) --------------------------------- Hopefully now, after all these bureaucratic problems, someone would be able to help. Any help is really appreciate. Thank you

so, how do I show u the items I am talking about ? Can I post the general google search ? or can u guys be of any help without the need of the links ? tx

Hello guys, I need some help please. I am a scientist and we are trying to run an experiment in a chamber to which we go from bright light (sunlight) to night time (moon light). The chamber is sealed , so I would like to record the experiment trough a tiny hole to make in the chamber, that is why I would like to use pinhole lenses. I need some suggestion on which camera to use for having better videos in low ligh in the highest video resolution possible using pinhole lenses . I have 2 options: A) Buy a surveillance camera that can mount a c/cs pinhole lens. For example I was thinking of these 2 solutions: 1) GHN-A955 and use with it a F.2.0 c/cs mount pinhole lens http://www.exelontech.com/product/product.php?prod_id=196&c=SDVVYVExVFBSWjFSR1pVWk9aa2FXbFhPRmQxVE9aRlZYQkhia1psU0VWbWRzRmpWVHBGTVdsRmV0WmxWU1pVVDFVVk1TTlhPclYxTXhRRlU= or a 2) Vitek VTC-C770WS and use with it a F.2.0 c/cs mount pinhole lens [edit by mod- store link removed] or [edit by mod- store link removed] Problem with the above solutions is that the cameras are standard definition (not high definition cameras) and that using F2.0 pinhole lens, I will degrade the low light ability of the surveillance camera... B) The other solution could be to buy directly a pinhole camera ike the one below 1) just buy a pinhole camera like this: [edit by mod- store link removed] http://www.ktnc.co.kr/english/viewtopic.php?t=948 http://www.ktnc.co.kr/english/viewtopic.php?t=645 http://www.ktnc.co.kr/english/viewtopic.php?t=951 http://www.ktnc.co.kr/english/viewtopic.php?t=950 The problem with this solution, is that personally I think that security cameras are better in video quality than little tiny pinholes.. What do you think ? Could u please suggest me which of the 2 methods would you use to have the best video resolution possible at low light levels using a pinhole format ? Thank you

What about cameras like these ? http://www.rmassa.com/manu/sony.htm I am talking about scientific/industrial cameras that are firewire.... Thank you

Hello guys, I am trying to build : a full HD Video recorder system (for recording a scientific experiment, through a pinhole hole, that is going to happen in a confined environment) that: 1) is as I said, Full HD 30p or 60p 2) compatible with C or CS mount pinhole lenses 3) has a firewire or HDMI video output 4) can reach 0.xx lux (it does NOT matter if it switches to B&W to reach this low lux) 5) Record videos in Color 6) The idea is to buy a firewire or hdmi portable video recorder and connect this camera to it to record videos in 1080p or 1080i (at 25 Mbps) 7) the more compact, the better, but this is NOT a priority. NTSC 10) example of pinhole lenses are these : [edit by mod-store link removed] but any pinhole lens compatible with the camera you suggest is fine. but any pinhole lens compatible with the camera you suggest is fine. Thank you

Hello guys, I need some help please. I am trying to find the best cctv camera that can mount a CS lens on it. I am puzzled between an analogic cctv camera ot a digital one. I am trying to find one that has a great sensitivity under low light conditions ( 0.000x if possible), even automatically switching to B&W, but that can mainly record videos in color. If I could get under 0.0x in color I would be happy.... Another thing is that : will the CCTV digital or analogic, have the image stabilization system. I need some analogic CCTV or Digital CCTV that can compare in quality to a 1300 dollars digitla camcorder but the advantage of the CCTV of seeing under low light conditions (0.00x) Any help please ? Thank you

Are you joking ? Thanks