Schneider Kreuznach CCTV High Resolution 17mm / F1.4 (400-1000nm high resolution multispectral design) CAT # 18928 Description: This lens is a high end CCTV lens very much used in highly demanding environment of macro photography and industrial/cine work. This version is motorized Video Type Iris, which works flawlessly. It has manual manual focus back ring, so you can use it in you 4/3 camera set up! (It may produce a little vignetting, as it is intended for 2/3" CCDs) More info: The 2/3" C-Mount lenses are designed for a spectral range of 400-1000 nm and can be used in the visible and near infrared range, practically without focus difference. The high optical performance is achieved by a sophisticated optical design and the use of ultra low dispersion glass. A special broadband coating reduces stray light and increases transmission over the whole spectral range. The lenses are available with manual, motorized or video signal controlled iris, which makes them suitable for video surveillance as well as for technical applications. Original cost about 2000. Very high end glass! Issues: none, seems absolutely like-new. AutoIris tested and it works nice. Technical information: HTTPS://www.eureca.de/pdf/optics/schneider/Schneider.pdf (see page 3) TERMS: A WARNING WORD HERE: My descriptions are faithful. I am NOT a cold Corporation thinking up just in numbers and my selling here is a long term responsability activity. I want you to be sure you are paying for what I am describing. In fact, most of my items are over-described (I tend to look specifically for problems instead of overlooking them). If for some reason you think I missed it up, get back to me. I don't tend to mess around with people. Like most of you, I work out my life with others "Quid Pro Quo" style, which means that I TRY TO DO OTHERS WHAT I WOULD LIKE THEM TO DO WITH ME. My cameras and optical stuff are all stored in dry safe containers here (no leaks, no humidity, no vapors). They will be delivered to you exactly as you are watching them here. I ACCEPT ON HAND DELIVERY if you live in Madrid. I accept returns: 1) Items must be received back in same condition as when they left here. 2) You pay return shipping costs as long as there are not other issues (DOA, etc..), in which case I would pay return shipping.