{"product_id":"b-w-58mm-uv-ir-cut-with-multi-resistant-coating-486m-58-mm","title":"B+W 58mm UV\/IR Cut with Multi-Resistant Coating (486M) 58 mm","description":"\u003ch4\u003eB+W 58mm UV\/IR Cut with Multi-Resistant Coating (486M)\u003c\/h4\u003e\n\u003cp id=\"b\"\u003eSize:58 mm | Style:UV\/IR Cut  High Quality German Filters\nFrom the Manufacturer Protect Your Lens while Reducing UV Exposure (486M) This\nB+W Interference Filter has a completely colorless glass carrier coated with a\nnumber of extremely thin, partially reflecting layers with precisely computed\nthicknesses, similar to MRC coating. It does not block by means of absorption,\nbut by interference of the unwanted UV and IR radiation that is repeatedly\nreflected between these layers, affecting the wavelengths on both sides of the\nvisible spectrum with a steep cut-off. It is used mainly on digital and video\ncameras with CCD sensors without an integrated IR protection filter, because\nthe IR sensitivity of the CCD sensor would otherwise cause color changes and\nunsharpness. That unsharpness results from the chromatic aberration of the\nlenses that are only corrected for visible light. In the visible range, the\ntransmission curve is very high and straight. This filter is completely clear\nand it requires no increase in exposure. It has a filter factor of 1.\nImportant Note Regarding Wide-Angle Lenses Please note however that, in\ncontrast to mass-colored (integrally colored) filter glass, the UV\/IR Cut MRC\n(486M) filter is based on thin-film technology. More than 30 interference\ncoatings are vapor-deposited on one side, while the opposite side is MRC-\ncoated. In wide-angle lenses, the laws of physics lead to shallower incidence\nangles for peripheral rays. For geometric reasons these rays have to travel\nfurther through the interference coatings than rays traveling vertically\nthrough the coatings in the center of the lens. With increasing angle of\nincidence, this leads to a change in light color towards blue. This effect can\nclearly be seen by looking at an UV-IR barrier filter from an angle. The color\nof the reflected light changes, with a similar effect on the light traveling\nthrough the filter. The filter is therefore not suitable for lens systems with\nan angle of view greater than 60°. The pictures gain brilliance and disturbing\nblue casts are avoided. Because the glass is colorless, color rendition is not\naltered, aside from the elimination of the unwanted blue cast, and no increase\nin exposure is required. That makes a UV filter very suitable as protection of\nthe front element of the taking lens against dust, flying sand, sea water\nspray, and the like, and it can be kept on the lens at all times. It is\nrecommended for analog color and black-and-white, as well as digital\nphotography. MRC - A Special Scratch-Resistant, Water and Dirt Repelling\nCoating The left half of this filter has atraditional coating. The right\nhalfhas MRC coating. The lens elements of high-quality lenses and the plano\nsurfaces of filters require a perfect shape and smoothness to achieve the best\noptical quality. Dirt, greasy fingerprints, water marks and scratches reduce\nthe image contrast and the sharpness, which can result in blooming at light\nsources and have an effect similar to a soft-focus lens. A clean front lens\nelement and clean filter surfaces are therefore an absolute pre-requisite for\ndemanding photographers. MRC coating causes the waterto bead up and slide\nright off. The MRC coating is first and foremost a broadband anti-reflection\ncoating. This means that its reflection-reducing effect, which is thus also a\ntransmission-increasing effect, i.e. one which suppresses scattered light and\nghost images and transmits more light, has a broadband action over the full\nspectrum. In contrast, the (almost always blue) single-layer coating only has\na high effect in the medium wavelength range around yellow and yellow-green\nwhere the eye is most sensitive to light, while its effect is greatly reduced\ntoward the blue-violet and purple-red end regions of the visible spectrum.\nWith the MRC coating, this blue, violet and red to deep-red light cannot\nproduce any contrast reducing scattered light, spotty reflections or ghost\nimages. A broadband effect can only be achieved with a multilayer coating\nwhich requires a much higher effort and precision because unevenness and\nirregularities of the individual layers build up on one another and amplify\none another. Schneider therefore uses a plasma-assisted evaporation coating\nprocess in which inert gas ions accelerated in an electrical field compact the\nmaterial deposited on the lens surface in the vacuum chamber. For\nphotographers, the main advantage of MRC coating, is it's ability to combat\nflare and ghosting. An added benefit is that their filters remain free of dirt\nlonger, so that they do not have to be cleaned so often. When cleaning the\nfilter does become necessary, it is a lot easier to wipe off the dirt with a\nblower brush, because of MRC's ability to repel dirt and moisture. This also\nreduces the risk of micro-scratches which can occur during cleaning. Side view\nof F-Pro Mount.Click for larger view. F-Pro Brass Filter Mount This filter\nuses our standard B+W F-Pro filter mount, which has a front accessory thread\nand is made of brass. Compared to the earlier standard mount, the F-Pro mount,\nintroduced in 2001, has become thinner. Now it can be used with wide angle\nlenses, including most 24mm focal lengths on a full frame body, without\nvignetting. Another advantage of the F-Pro mount is its modified retaining\nring, which is no longer threaded in from the front, but holds the filter\nglass in place from the back. When removing a filter or lens hood that has\nbeen screwed on too tight to the filter, the retaining ring is not at risk of\nloosening.\u003c\/p\u003e \n\n\n  \u003cul class=\"a\"\u003e\n         \u003cli\u003eBrass Ring for higher Quality Image\u003c\/li\u003e\n         \u003cli\u003eHighest possible polishiing technique\u003c\/li\u003e\n         \u003cli\u003eWorld's best optical glass\u003c\/li\u003e\n         \u003cli\u003eNew thinner Pro mount. No vignetting\u003c\/li\u003e\n         \u003cli\u003eUSA Warranty\u003c\/li\u003e\n  \u003c\/ul\u003e","brand":"B + W","offers":[{"title":"58 mm \/ UV\/IR Cut","offer_id":40284478046361,"sku":"B0012LYHUK","price":334.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0491\/3148\/7385\/products\/B0012LYHUK.jpg?v=1649826391","url":"https:\/\/soundstores.net\/products\/b-w-58mm-uv-ir-cut-with-multi-resistant-coating-486m-58-mm","provider":"SoundStore Australia","version":"1.0","type":"link"}