{"title":"150mm   Astrophotography filters","description":"","products":[{"product_id":"lprf-150x150mm","title":"KANI Light Pollution Reduction Filter (150x150mm)","description":"\u003cp\u003e\u003cb\u003eKANI Light Pollution Reduction Filter (150mm x 150mm) \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eSKU Number :  K04003\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRODUCT DESCRIPTION \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- The filter is Light Pollution Reduction Filter (LPRF) .\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e- The filter is 150mm x 150mm Square type dimension. (to use with 150mm holder)\u003c\/p\u003e\n\u003cp\u003e- The filter glass is made by B270 glass of German SCOTT\u003c\/p\u003e\n\u003cp\u003e- The filter both sides are ultra-precisely polished to maintain a high filter flatness accuracy.\u003c\/p\u003e\n\u003cp\u003e- The filter is water-proof, oil-proof and dust-proof with Premium Coating System.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a light pollution reduction filter that can cuts and reduces for color casts caused by light pollution when photographing at the night times.\u003c\/p\u003e\n\u003cp\u003eThis is very useful to reduce the influence of unnecessary light sources such as urban lighting, sodium lamps, and mercury lamps.\u003c\/p\u003e\n\u003cp\u003eKANI's Light Pollution Reduction Filter is characterized by a good reducing rate of yellow.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWHY KANI \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eKANI’s LPRF was collaboration product with the request of astrophotographer Mr. Akio Nakanishi, who is really famous\u003cspan class=\"Apple-converted-space\"\u003e  \u003c\/span\u003eastro-photographer in Japan.\u003cbr\u003eKANI's LPRF is the world's highest level as a light-pollution reduction filter for every photographer. KANI's LPRF is characterized by a very good yellowish cutoff ratio. The cutoff ratio, especially in the yellow area, is extremely excellent.\u003c\/p\u003e\n\u003cp\u003eKANI filters feature high transmittance due to B270 glass made by German company Scott, flatness accuracy due to double-sided ultra-precision polishing, low occurrence of ghosts and flares due to excellent coating technology, and high oil, water, and dust resistance. It is a gem that also has strength that is hard to damage and crack.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eThe Sky is amazing without Pollution of Light \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDid you ever notice how much beautiful the sky is without the star ? The sky without the pollution is one the greatest view. But in these day, mostly over urban areas, due to the electric lights of cars, street-lamps, offices, factories, outdoor advertising, and buildings, turning\u003cspan class=\"Apple-converted-space\"\u003e  \u003c\/span\u003ethe night are becoming the light pollution and people are very difficult to find the beauty of Night. \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eLight pollution is an obstacle for your qualities of images\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe light wave from artificial light impact the photo quality badly. Specifically, the night pollution is like the enemies for the people of astrophotography. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKANI Light Pollution Reduction Filter will be one of the best way to solve this problem for photographing at night.\u003c\/b\u003e\u003c\/p\u003e","brand":"KANI","offers":[{"title":"Default Title","offer_id":53898102767982,"sku":"K04003","price":241.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/0238\/5774\/files\/K04003_02.jpg?v=1781229712"},{"product_id":"partial-soft-focus-filter-150-170mm","title":"KANI Partial Soft Focus Filter ( 150x170mm )","description":"\u003cp\u003e\u003cb\u003eKANI Partial Soft Focus Filter ( 150x170mm )\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eSKU Number : K03013\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRODUCT DESCRIPTION\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e- The filter is \u003cmeta charset=\"UTF-8\"\u003e\u003cb data-mce-fragment=\"1\"\u003ePartial Soft Focus Filter.\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e- The filter is 150mm x 170mm rectangular dimension. (to use with 150mm holder)\u003c\/p\u003e\n\u003cp\u003e- The filter glass is made by B270 glass of German SCOTT\u003c\/p\u003e\n\u003cp\u003e- The filter both sides are ultra-precisely polished to maintain a high filter flatness accuracy.\u003c\/p\u003e\n\u003cp\u003e- The filter is water-proof, oil-proof and dust-proof with Premium Coating System.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003cbr\u003eThis 150mm wide soft filter has a soft effect on 70% of the sky and the remaining 30% is clear.\u003c\/p\u003e\n\u003cp\u003eEspecially for star-scape photography, the ground side of the image can be sharply defined while the stars are well emphasized.\u003c\/p\u003e\n\u003cp\u003eThis soft-effect filter is ideal for photographs with lighthouses, models, or night scenes on the ground side.\u003c\/p\u003e\n\u003cp\u003eThe filter is not labeled with the product name, as it can be used for full soft effect by shifting it to the edge. \u003c\/p\u003e","brand":"KANI","offers":[{"title":"Default Title","offer_id":53898117546350,"sku":"K03013","price":215.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/0238\/5774\/files\/K03013_01.jpg?v=1781230316"},{"product_id":"r-640-150x150mm","title":"KANI R640 Nebula Photography Filter 150x150mm","description":"\u003cdiv style=\"font-family:Arial,sans-serif; line-height:1.9; color:#222;\"\u003e\n\n\u003ch2 style=\"font-size:32px; margin-bottom:15px;\"\u003e\nKANI R640 Nebula Photography Filter 150x150mm\n\u003c\/h2\u003e\n\n\u003cp\u003e\nThe KANI R640 150x150mm Nebula Photography Filter is a specialized square filter designed for astrophotography, especially for capturing nebulae and deep-sky objects with enhanced contrast.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis filter was developed under the supervision of astrophotographer \u003cstrong\u003eAkio Nakanishi\u003c\/strong\u003e in response to requests from astrophotography enthusiasts.\nAlthough similar filters from major manufacturers were discontinued due to limited market demand, many astrophotographers still consider this type of filter highly valuable for nebula photography.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe R640 filter helps improve the visibility of H-alpha emission regions while reducing unwanted light pollution, making it useful for photographing nebulae from both dark-sky locations and areas affected by artificial light.\n\u003c\/p\u003e\n\n\u003cdiv style=\"background:#f5f5f5; padding:22px; border-radius:12px; margin:35px 0;\"\u003e\n\u003ch3 style=\"font-size:26px; margin-top:0;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"padding-left:22px; margin-bottom:0;\"\u003e\n\u003cli\u003eSpecialized square filter for nebula and astrophotography\u003c\/li\u003e\n\u003cli\u003e150x150mm size for large square filter holder systems\u003c\/li\u003e\n\u003cli\u003eEnhances nebula contrast and H-alpha emission visibility\u003c\/li\u003e\n\u003cli\u003eHelps reduce the influence of light pollution\u003c\/li\u003e\n\u003cli\u003eDeveloped under the supervision of astrophotographer Akio Nakanishi\u003c\/li\u003e\n\u003cli\u003eSuitable for astro-modified cameras and manufacturer astro models\u003c\/li\u003e\n\u003cli\u003eUseful for long-exposure deep-sky photography\u003c\/li\u003e\n\u003cli\u003eIdeal for emission nebulae, night sky, and creative astrophotography\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"font-size:26px;\"\u003eProduct Description\u003c\/h3\u003e\n\n\u003cp\u003e\nNebula photography requires the ability to capture very faint light emitted from deep-sky objects.\nThe KANI R640 filter is designed to support this type of photography by emphasizing wavelengths useful for nebula imaging while reducing unnecessary light contamination.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBy controlling unwanted visible light and suppressing the effects of light pollution, the R640 filter can help create cleaner images with improved contrast around nebula structures.\nThis is especially helpful when shooting in locations where city lights or artificial illumination affect the night sky.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe 150x150mm square format is suitable for photographers using square filter holder systems, allowing the filter to be used with a wide range of lenses depending on the holder and adapter configuration.\n\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:26px;\"\u003eExposure Multiplier\u003c\/h3\u003e\n\n\u003cp\u003e\nThe exposure multiplier of the R640 filter depends on the camera type, sensor sensitivity, and shooting environment.\n\u003c\/p\u003e\n\n\u003cul style=\"padding-left:22px;\"\u003e\n\u003cli\u003e\nFor manufacturer astro models and astro-modified cameras with high sensitivity to H-alpha wavelengths, the exposure multiplier is approximately 5x to 6x.\n\u003c\/li\u003e\n\u003cli\u003e\nIn areas with strong light pollution, exposure compensation may exceed 10x because the filter provides a strong light pollution reduction effect.\n\u003c\/li\u003e\n\u003cli\u003e\nFor standard non-modified DSLR cameras, the exposure multiplier is generally more than 10x because sensitivity to wavelengths longer than 640nm is limited.\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"font-size:26px;\"\u003eRecommended Applications\u003c\/h3\u003e\n\n\u003cul style=\"padding-left:22px;\"\u003e\n\u003cli\u003eNebula photography\u003c\/li\u003e\n\u003cli\u003eDeep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eH-alpha enhanced imaging\u003c\/li\u003e\n\u003cli\u003eNight sky photography\u003c\/li\u003e\n\u003cli\u003eLong-exposure astrophotography\u003c\/li\u003e\n\u003cli\u003eAstrophotography in light-polluted areas\u003c\/li\u003e\n\u003cli\u003eCreative astronomical imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"font-size:26px;\"\u003eSpecifications\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:20px 0;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px; background:#f8f8f8;\"\u003eProduct Name\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px;\"\u003eKANI R640 Nebula Photography Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px; background:#f8f8f8;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px;\"\u003e150x150mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px; background:#f8f8f8;\"\u003eFilter Type\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px;\"\u003eNebula \/ Astrophotography Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px; background:#f8f8f8;\"\u003eMain Purpose\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px;\"\u003eNebula photography, H-alpha enhanced imaging, light pollution reduction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px; background:#f8f8f8;\"\u003eRecommended Camera\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:12px;\"\u003eAstro-modified cameras \/ Manufacturer astro models recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv style=\"background:#fff7e6; border-left:5px solid #d99a00; padding:20px; margin:35px 0;\"\u003e\n\u003cstrong\u003eImportant Note\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\nExposure settings will vary depending on the camera model, modification type, lens, sky conditions, and level of light pollution.\nFor best results, use with cameras that have high sensitivity to H-alpha wavelengths, such as astro-modified cameras or manufacturer astro models.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"KANI","offers":[{"title":"Default Title","offer_id":53898117579118,"sku":"K04007","price":249.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/0238\/5774\/files\/K04007_02.jpg?v=1781230324"}],"url":"https:\/\/kanifilterjapan.com\/collections\/cpl-astrophotography-filter.oembed","provider":"kanfilterjapan","version":"1.0","type":"link"}