Calumet's Multi-Coated filters are a must for modern digital stills & camcorder lenses, particularly where lens hoods or compendium shades cannot be used.  These outstanding filters offer revolutionary performance in light transmission, colour balance & flare control. Calumet Multi-Coated Filters minimise flare & ghost imaging in situations where unwanted light falls on the filters surface.  The result is an average light transmission of over 97%, producing sharp contrast & well-balanced colour. Multi-Coated filters are available in a wide range of filter types & are highly recommended for maximising the performance inherent in multi-coated lenses. 80A Daylight Balance: Allows daylight balance under most types of Tungsten & studio lighting without the need for changing your camera's white balance settings. ...

55mm 80B Multi-Coated Filter Calumet Multi-Coated Filters
- prevent flare while protecting your lens & enhancing photos. Top optical
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55mm 81A Multi-Coated Filter Calumet Multi-Coated Filters
- prevent flare while protecting your lens & enhancing photos. Top optical
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55mm 81B Multi-Coated Filter Calumet Multi-Coated Filters
- prevent flare while protecting your lens & enhancing photos. Top optical
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For lenses with a 55mm thread. Screws onto the lens with a fluid action, thanks to the sturdy construction & aluminium screw thread. ...

Calumet 55mm Circular Polarising Filter Calumet's Multi-Coated filters are a must for modern digital stills & camcorder lenses, particularly where lens hoods or compendium shades cannot be used. These outstanding filters offer revolutionary performance in light transmission, colour balance & flare control. Calumet Multi-Coated Filters minimise flare & ghost imaging in situations where unwanted light falls on the filters surface. The result is an average light transmission of over 97%, producing sharp contrast & well-balanced colour. Multi-Coated filters are available in a wide range of filter types & are highly recommended for maximising the performance inherent in multi-coated lenses. Polarising: Rotating mount allows for the filter to be adjusted to provide colour & contrast enhancement & to reduce reflections in glass, water etc. ...

Calumet's Super Multi-Coated filters are available in UV/P & Circular Polariser only. Calumet Digital Super Multi-Coated (SMC) filters are mounted in slim-profile rings to work with wider-angle digital lenses & are Super Multi-Coated for enhanced durability & superior light transition. Calumet Digital SMC filters have extra layers of multi-coating which result in an enhanced average light transmission of 99.7% & provide increased resistance to flare even at wide apertures. Circular Polarising: Rotating mount allows the filter to be adjusted to provide colour contrast & enhancement & to reduce reflections in glass, water etc. ...

Calumet 55mm Circular Polarizer MC Filter. Calumet Multi-Coated filters minimize flare & ghost imaging in situations where unwanted light falls on filter surfaces. The result is an average light transmission of over 97 percent, producing sharp contrast & well-balanced color. MC filters are available in most popular types & are highly recommended for obtaining the performance inherent in multi-coated camera lenses. ...

State-of-the-art optics Incorporating high-performance, hybrid aspherical optical element in its optics, this new standard lens offers exceptional image-resolving power with outstanding brightness levels even at the edges, while compensating various aberrations to a minimum. All lens characteristics are optimized for digital photography: for instance, flare & ghost images are minimized by applying exclusive lens coatings to optical elements & employing anti-reflection materials for the interior of the lens barrel. As the result, this lens can bring out the full potential of the PENTAX 645D medium-format digital SLR camera. Versatile standard lens When mounted on the PENTAX 645D camera body, this standard lens offers a focal length of 43.5mm (in the 35mm format), which produces an angle of view close to that of the human eye. As the result, it can be used for many different kinds of subjects & applications, including landscapes & portraits. Dependable dustproof, weather-resistant construction Using seven special seals, the lens’ dustproof, weather-resistant construction effectively prevents the intrusion of dust & water to the lens interior. By coupling this lens with the PENTAX 645D camera body, the user is assured of a durable, reliable digital SLR camera system that performs superbly in outdoor settings, even in rain or mist or at locations prone to water splashes or spray. PENTAX plans to use the “AW” (All Weather) designation in the product name of all dustproof, weather-resistant medium-format interchangeable lenses to be marketed in the future. Aero Bright coating to dramatically improve image description in backlight The lens is treated with PENTAX-original Aero Bright coating, which delivers brilliant, high-quality images by preventing annoying flare & ghost images more effectively than ever before. Born as the fruit of PENTAX’s advanced nanotechnology, this exclusive coating effectively reduces lens reflectance & greatly increases light transmittance by forming a silica aerogel layer with uniform pores on the surface of optical element. Rounded diaphragm to produce a beautiful bokeh This is the first PENTAX medium-format interchangeable lens to features a completely rounded diaphragm. It creates a natural, beautiful “bokeh” (out-of-focus rendition), while minimizing the streaking effect of point light sources. Smooth, quiet SDM autofocus mechanism The SDM (Supersonic Direct-drive Motor) autofocus mechanism operates smoothly & quietly using the supersonic motor installed inside the lens barrel. SP coating to block dust & dirt The front surface of the lens is treated with PENTAX-original SP (Special Protect) coating, which applies an exclusive fluorine compound to the lens surface through a vapour deposition process. This SP coating not only effectively repels dust, water & grease, but also makes it easy to wipe off fingerprints & cosmetics. Other features 1) Image circle covering the image area of 645-format film SLR cameras 2) Functional, simplified design, with no aperture ring 3) Quick-Shift Focus system for instant switching to manual-focus operation, after the subject is captured in focus by the AF system 4) PL filter window for easy installation of a polarizing filter without removing the lens hood 5) PH-SA67 Square Plastic Hood (optional) for more effective prevention of flare & ghost images when mounted on the PENTAX 645D camera body ...

Normal macro lens with 1/2 maximum reproduction ratio. Aperture range 2.8-32 & 1:2.8 aperture ratio. Automatic diaphragm type. 43 degree picture angle. ...