Schneider Kreuznach CCTV High Resolution, IR compensated, XENOPLAN 17mm / F1.4 (400-1000nm multispectral design) Serial # 21005164 Description: This 2/3" C-Mount lens is a high end CCTV lens very much used in high performance CCTV environment. Contrast and resolution are no-compomise. This lens works perfect. It will produce some vignetting in 4/3 detectors, but very little. IRIS was completely removed, so it always works at F1.4. It includes what you see in pictures. This is one of the best CCTV lenses in the world!! More info: They are designed for high resolution work (contrast is just amazing) and for a spectral range of 400-1000 nm (IR compensated), which means 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. In my tests with slanted edge method, these Schneider Cinegon/Xenoplan broadband lenses are among the top winners always. Original cost about 1200. Very high end glass! For those of you nerd coatings experts, at the back lens produces light purple/green reflections and at the back it has yellowish/green reflection. Issues: some normal usage marks (lenses are perfect). Technical information: HTTPS://www.eureca.de/pdf/optics/schneider/Schneider.pdf (see page 3) TERMS: 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.