Bmini 0 Posted February 27, 2012 Hi, I have a PC-23C camera in my barn. I use it to monitor pregnant mares. I have used a PC-23C for years to monitor the mares, but it finally gave out and I got another one. With the new one, I can see and hear everything clearly on my tv at night. However during the day, the sound is good but the picture on my tv is totaly white. How can I fix this? What can I adjust? Any help other than buy a different camera will be greatly appreciated. Thank you, Bmini Share this post Link to post Share on other sites
Soundy 1 Posted February 27, 2012 Hard to say for sure what the cause is without more information, but the symptoms sound like simple over-exposure... are you using the same lens on the new one as the old one? Have you duplicated all the settings from the old one to the new one? Share this post Link to post Share on other sites
Bmini 0 Posted February 27, 2012 Hi Matt Ion, Omnigeek, And thank you for your replay. Yes, everything is the same as I had with the old camera, same lens, same settings, same everything. Share this post Link to post Share on other sites
Soundy 1 Posted February 27, 2012 It was hard to find any info on this camera online, but I did find some articles on hacking it to add manual exposure control (mostly by people using it for astrophotography). Does the lens have a wire than connects to the camera body? If so, is there an adjustment on the camera (probably a small recessed dial) labelled "DC LEVEL" or just "LEVEL" or something similar? Share this post Link to post Share on other sites
Bmini 0 Posted February 27, 2012 I also searched the net for info, not much out there. Nope, no wire from the lens. The lens just screws on, no other connection. Bmini Share this post Link to post Share on other sites
Soundy 1 Posted February 27, 2012 The lens will probably have an iris (aka aperture) adjustment, then... look for a ring on it marked with "O" and "C" at two different points. Or just play with the rings on it - you should find that one of them makes the picture darker and brighter: this is the iris. Try dialing it down in the daytime for proper exposure, then see if the camera doesn't compensate and brighten it up at night. Can you provide close-up photos of the camera and lens? Make a make and model number of the lens? Share this post Link to post Share on other sites
Bmini 0 Posted February 28, 2012 The lens does have 2 adjustments rings, I will try your suggestion tomorrow and try to get photos of the lens. Please have s little patience with me getting back, I have a mare going in to liver failure and we are trying to save her and her unborn foal, so I am a little busy, but I will get back with the information. I also found the information below on the net. If your suggestion does not work, I plan to try this. The PC23C, has a switch to control the exposure time (either 1/60 second or automatic). For dark images, these two settings give the same results. The sensitivity is adjusted from high to low with a microswitch that can be reached only by taking off the back plate of the camera. With the back removed, the tiny white sensitivity microswitch (not labelled) is mounted on the right side of the right side card (looking down into the camera with the RCA video output jack up), about a 4th the size of the shutter on/off switch on the left side that is accessible through a hole in the back plate. The sensitivity microswitch comes in the up (high sensitivity) position; just use a small object, or your fingernail, to push it down). Then reattach the back plate (last night, I observed without the back plate on, wanting to know what would happen when I changed from high to low sensitivity, but after seeing the results, the much higher noise with high sensitivity, I'm going to keep it on the low setting). Thanks Bmini Share this post Link to post Share on other sites
