We use both variable halogen and led light sources on our microscope cameras. The halogen tend to give a yellowish appearance to the pictures and we use the camera contols to blue it out to a more true color. The led light source is on a slightly different camera with a fixed iris, on this camera the LED tends to blind the camera, it does however give a very true color although most of the time we have to run it on minimum. The LCD cameras are very sensitive to the lumins you feed them, so a little goes a long way, even the halogen will blind the camera on the newer circuit boards (lighter background), the halogen cameras have auto iris, unfortunately they are not available in manual (which I would prefer). Pat Goodyear Control technician Pacific gas and electric -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory Sent: Monday, May 09, 2011 9:17 AM To: [log in to unmask] Subject: [TN] LED Microscope Ring Illuminators Hi All, Do any of you use LED microscope ring illuminators? Good or bad? I know it's a cooler temperature light than halogen illuminators, but I like what they claim life of the LED's are, 50,000 hours vs. 1,000 hours for a halogen lamp. I've never had the chance to use one, and I'd be interested in what you think of them. Thanks, Steve ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 16.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 16.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------