{"id":1187,"date":"2026-10-05T11:29:44","date_gmt":"2026-10-05T09:29:44","guid":{"rendered":"https:\/\/thatdog.fr\/index.php\/filtros-opticos-cine-mist-nd-difusion\/"},"modified":"2026-10-05T12:02:39","modified_gmt":"2026-10-05T10:02:39","slug":"filtros-opticos-cine-mist-nd-difusion","status":"publish","type":"post","link":"https:\/\/thatdog.fr\/index.php\/es\/filtros-opticos-cine-mist-nd-difusion\/","title":{"rendered":"Filtros \u00f3pticos de cine: ND, Mist, difusi\u00f3n y polarizadores"},"content":{"rendered":"\n[et_pb_section admin_label=\u00a0\u00bbsection\u00a0\u00bb]\n\t\t\t[et_pb_row admin_label=\u00a0\u00bbrow\u00a0\u00bb]\n\t\t\t\t[et_pb_column type=\u00a0\u00bb4_4&Prime;][et_pb_text admin_label=\u00a0\u00bbText\u00a0\u00bb]<p>Un filtro se coloca delante del objetivo y modifica la luz antes de que llegue al sensor. Algunos filtros son puramente t\u00e9cnicos (ND), otros dan forma a la imagen (difusi\u00f3n). Estas son las familias que se usan en un rodaje, lo que hacen y c\u00f3mo las elegimos.<\/p>\n<h2 class=\"wp-block-heading\">\u00bfD\u00f3nde se coloca un filtro?<\/h2>\n<p>En un objetivo fotogr\u00e1fico, el filtro se enrosca delante. En un rodaje se usa un parasol de cine (matte box) que admite filtros rectangulares de 4 \u00d7 5,65 pulgadas, 4 \u00d7 4 o 6,6 \u00d7 6,6 pulgadas, intercambiables en segundos y apilables. Algunas c\u00e1maras tambi\u00e9n integran filtros ND internos.<\/p>\n<h2 class=\"wp-block-heading\">Los filtros ND (densidad neutra)<\/h2>\n<p>Un filtro ND reduce la luz sin cambiar los colores. Con sol intenso permite mantener una gran apertura para un fondo desenfocado, respetando una velocidad de obturaci\u00f3n cercana a 1\/50 s para 25 im\u00e1genes por segundo, es decir, el obturador a 180\u00b0.<\/p>\n<figure class=\"tdp-fig\" style=\"margin:22px 0\"><svg viewBox=\"0 0 640 250\" role=\"img\" aria-label=\"Gr\u00e1fico de los filtros ND de 0,3 a 2,1 con la luz transmitida\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" font-family=\"Inter,Helvetica,Arial,sans-serif\" style=\"width:100%;height:auto;display:block\"><rect width=\"640\" height=\"250\" fill=\"#161817\"\/><text x=\"20\" y=\"28\" font-size=\"15\" font-weight=\"700\" fill=\"#ffd400\">Filtros ND: luz transmitida<\/text><text x=\"620\" y=\"28\" font-size=\"12\" fill=\"#9aa09d\" text-anchor=\"end\">Densidad \u00b7 luz transmitida<\/text><rect x=\"40\" y=\"70\" width=\"64\" height=\"130\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"72\" y=\"62\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">50 %<\/text><text x=\"72\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 0.3<\/text><text x=\"72\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">1 pasos<\/text><rect x=\"138\" y=\"135\" width=\"64\" height=\"65\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"170\" y=\"127\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">25 %<\/text><text x=\"170\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 0.6<\/text><text x=\"170\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">2 pasos<\/text><rect x=\"236\" y=\"167.5\" width=\"64\" height=\"32.5\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"268\" y=\"159.5\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">12.5 %<\/text><text x=\"268\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 0.9<\/text><text x=\"268\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">3 pasos<\/text><rect x=\"334\" y=\"183.75\" width=\"64\" height=\"16.25\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"366\" y=\"175.75\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">6.25 %<\/text><text x=\"366\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 1.2<\/text><text x=\"366\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">4 pasos<\/text><rect x=\"432\" y=\"195.944\" width=\"64\" height=\"4.056\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"464\" y=\"187.944\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1.56 %<\/text><text x=\"464\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 1.8<\/text><text x=\"464\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">6 pasos<\/text><rect x=\"530\" y=\"196\" width=\"64\" height=\"4\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"562\" y=\"188\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">0.78 %<\/text><text x=\"562\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 2.1<\/text><text x=\"562\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">7 pasos<\/text><\/svg><figcaption>Cada 0,3 de densidad resta un paso de luz.<\/figcaption><\/figure>\n<ul><li><strong>ND 0.3, 0.6, 0.9:<\/strong> 1, 2 o 3 pasos menos, para d\u00edas nublados o luz moderada.<\/li><li><strong>ND 1.2 y superiores:<\/strong> 4 pasos y m\u00e1s, para sol pleno con gran apertura.<\/li><li><strong>IRND:<\/strong> algunos sensores son sensibles al infrarrojo; con un ND fuerte, los negros pueden virar a magenta o marr\u00f3n. Un IRND filtra tambi\u00e9n el infrarrojo para evitarlo.<\/li><li><strong>ND variable:<\/strong> pr\u00e1ctico en foto y reportaje, pero puede a\u00f1adir dominantes de color o un patr\u00f3n oscuro en cruz con densidad alta. En rodajes exigentes preferimos ND fijos.<\/li><\/ul>\n<h2 class=\"wp-block-heading\">El polarizador<\/h2>\n<p>El filtro polarizador aten\u00faa los reflejos en el agua, el cristal o las hojas, oscurece un cielo azul y a\u00f1ade profundidad a los colores. Resta aproximadamente de uno y medio a dos pasos. Se ajusta gir\u00e1ndolo y su efecto depende del \u00e1ngulo respecto al sol. Es muy \u00fatil para inmobiliaria, el mar y los escaparates.<\/p>\n<h2 class=\"wp-block-heading\">Los ND degradados<\/h2>\n<p>Un ND degradado est\u00e1 te\u00f1ido en una mitad y claro en la otra. Colocado con la parte oscura sobre el cielo, equilibra la exposici\u00f3n de un paisaje. Existe con transici\u00f3n suave o dura; un horizonte irregular (\u00e1rboles, edificios) se nota enseguida.<\/p>\n<h2 class=\"wp-block-heading\">Los filtros de difusi\u00f3n<\/h2>\n<p>Los sensores modernos son muy n\u00edtidos. Los filtros de difusi\u00f3n suavizan la imagen: hacen que las fuentes de luz se expandan ligeramente, reducen el contraste local y favorecen los rostros.<\/p>\n<figure class=\"tdp-fig\" style=\"margin:22px 0\"><svg viewBox=\"0 0 640 220\" role=\"img\" aria-label=\"Esquema de una fuente de luz con una difusi\u00f3n cada vez m\u00e1s fuerte, de 1\/8 a 2\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" font-family=\"Inter,Helvetica,Arial,sans-serif\" style=\"width:100%;height:auto;display:block\"><rect width=\"640\" height=\"220\" fill=\"#161817\"\/><defs><radialGradient id=\"pm0\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.18\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><radialGradient id=\"pm1\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.22\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><radialGradient id=\"pm2\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.26\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><radialGradient id=\"pm3\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.3\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><radialGradient id=\"pm4\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.33999999999999997\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><\/defs><text x=\"20\" y=\"30\" font-size=\"15\" font-weight=\"700\" fill=\"#ffd400\">Black Pro-Mist: intensidad de la difusi\u00f3n<\/text><rect x=\"18\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"70\" cy=\"112\" r=\"22\" fill=\"url(#pm0)\" opacity=\"0.5\"\/><circle cx=\"70\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"70\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1\/8<\/text><rect x=\"143\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"195\" cy=\"112\" r=\"29\" fill=\"url(#pm1)\" opacity=\"0.62\"\/><circle cx=\"195\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"195\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1\/4<\/text><rect x=\"268\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"320\" cy=\"112\" r=\"36\" fill=\"url(#pm2)\" opacity=\"0.74\"\/><circle cx=\"320\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"320\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1\/2<\/text><rect x=\"393\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"445\" cy=\"112\" r=\"43\" fill=\"url(#pm3)\" opacity=\"0.86\"\/><circle cx=\"445\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"445\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1<\/text><rect x=\"518\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"570\" cy=\"112\" r=\"50\" fill=\"url(#pm4)\" opacity=\"0.98\"\/><circle cx=\"570\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"570\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">2<\/text><text x=\"320\" y=\"212\" font-size=\"12\" fill=\"#9aa09d\" text-anchor=\"middle\">Cuanto mayor es el grado, m\u00e1s marcado es el resplandor alrededor de las fuentes<\/text><\/svg><figcaption>Los grados de difusi\u00f3n, de 1\/8 (muy discreto) a 2 (marcado).<\/figcaption><\/figure>\n<ul><li><strong>Pro-Mist y Black Pro-Mist:<\/strong> un resplandor alrededor de las altas luces. El Black Pro-Mist protege m\u00e1s los negros; el Pro-Mist los eleva un poco. Los grados van de 1\/8 a 2 y m\u00e1s.<\/li><li><strong>Hollywood Black Magic y Glimmerglass:<\/strong> variantes que expanden m\u00e1s o menos las fuentes y la textura.<\/li><li><strong>Classic Soft y Soft\/FX:<\/strong> suavizan sobre todo el detalle y la piel, con menos halo.<\/li><li><strong>Filtros de estela (streak):<\/strong> estelas horizontales alrededor de las fuentes, inspiradas en el anam\u00f3rfico.<\/li><\/ul>\n<h2 class=\"wp-block-heading\">\u00bfC\u00f3mo elegir?<\/h2>\n<figure class=\"wp-block-table\"><table><thead><tr><th>Filtro<\/th><th>Efecto<\/th><th>Uso t\u00edpico<\/th><th>Cuidado<\/th><\/tr><\/thead><tbody><tr><td>ND fijo<\/td><td>Menos luz<\/td><td>Exteriores, gran apertura<\/td><td>IR en algunos sensores<\/td><\/tr><tr><td>IRND<\/td><td>Menos luz, sin deriva IR<\/td><td>ND fuerte<\/td><td>Coste<\/td><\/tr><tr><td>Polarizador<\/td><td>Reflejos, cielo, saturaci\u00f3n<\/td><td>Inmobiliaria, mar, escaparates<\/td><td>Resta de 1,5 a 2 pasos<\/td><\/tr><tr><td>ND degradado<\/td><td>Equilibrar el cielo<\/td><td>Paisajes, dron<\/td><td>Horizonte irregular<\/td><\/tr><tr><td>Black Pro-Mist 1\/8 a 1\/4<\/td><td>Suaviza, resplandor discreto<\/td><td>Entrevistas, lifestyle<\/td><td>Probar con tus fuentes<\/td><\/tr><tr><td>Difusi\u00f3n fuerte<\/td><td>Ambiente on\u00edrico<\/td><td>Ficci\u00f3n, videoclip<\/td><td>P\u00e9rdida de nitidez<\/td><\/tr><\/tbody><\/table><\/figure>\n<div class=\"tdp-tip\"><p><strong>Nuestro enfoque.<\/strong> Un ND adecuado para mantener la velocidad de obturaci\u00f3n correcta, un Black Pro-Mist ligero para suavizar im\u00e1genes demasiado n\u00edtidas y siempre una prueba antes del rodaje: el efecto depende del objetivo, de la apertura y de las fuentes en el encuadre. Nuestro equipo est\u00e1 en la p\u00e1gina de <a href=\"https:\/\/thatdog.fr\/index.php\/es\/equipamiento\/\">equipamiento<\/a>.<\/p><\/div>\n<p>La difusi\u00f3n se simula mal en posproducci\u00f3n: el resplandor nace en la \u00f3ptica y sigue la luz real. Un ND, en cambio, es imprescindible para mantener un aspecto cinematogr\u00e1fico a plena luz del d\u00eda.<\/p>\n<div class=\"tdp-cta\"><p><strong>\u00bfUn look por definir para tu pel\u00edcula?<\/strong><br>Cu\u00e9ntanos el ambiente que buscas: elegimos las \u00f3pticas y los filtros.<\/p><a href=\"https:\/\/thatdog.fr\/index.php\/es\/solicitar-presupuesto\/\">Solicitar presupuesto \u2192<\/a><\/div>[\/et_pb_text][\/et_pb_column]\n\t\t\t[\/et_pb_row]\n\t\t[\/et_pb_section]\n","protected":false},"excerpt":{"rendered":"<p>ND, IRND, polarizador, Black Pro-Mist y difusi\u00f3n: para qu\u00e9 sirven los filtros \u00f3pticos de cine, c\u00f3mo elegirlos y cu\u00e1ndo usarlos.<\/p>\n","protected":false},"author":1,"featured_media":1148,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"<p>Un filtro se coloca delante del objetivo y modifica la luz antes de que llegue al sensor. Algunos filtros son puramente t\u00e9cnicos (ND), otros dan forma a la imagen (difusi\u00f3n). Estas son las familias que se usan en un rodaje, lo que hacen y c\u00f3mo las elegimos.<\/p>\n<h2 class=\"wp-block-heading\">\u00bfD\u00f3nde se coloca un filtro?<\/h2>\n<p>En un objetivo fotogr\u00e1fico, el filtro se enrosca delante. En un rodaje se usa un parasol de cine (matte box) que admite filtros rectangulares de 4 \u00d7 5,65 pulgadas, 4 \u00d7 4 o 6,6 \u00d7 6,6 pulgadas, intercambiables en segundos y apilables. Algunas c\u00e1maras tambi\u00e9n integran filtros ND internos.<\/p>\n<h2 class=\"wp-block-heading\">Los filtros ND (densidad neutra)<\/h2>\n<p>Un filtro ND reduce la luz sin cambiar los colores. Con sol intenso permite mantener una gran apertura para un fondo desenfocado, respetando una velocidad de obturaci\u00f3n cercana a 1\/50 s para 25 im\u00e1genes por segundo, es decir, el obturador a 180\u00b0.<\/p>\n<figure class=\"tdp-fig\" style=\"margin:22px 0\"><svg viewBox=\"0 0 640 250\" role=\"img\" aria-label=\"Gr\u00e1fico de los filtros ND de 0,3 a 2,1 con la luz transmitida\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" font-family=\"Inter,Helvetica,Arial,sans-serif\" style=\"width:100%;height:auto;display:block\"><rect width=\"640\" height=\"250\" fill=\"#161817\"\/><text x=\"20\" y=\"28\" font-size=\"15\" font-weight=\"700\" fill=\"#ffd400\">Filtros ND: luz transmitida<\/text><text x=\"620\" y=\"28\" font-size=\"12\" fill=\"#9aa09d\" text-anchor=\"end\">Densidad \u00b7 luz transmitida<\/text><rect x=\"40\" y=\"70\" width=\"64\" height=\"130\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"72\" y=\"62\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">50 %<\/text><text x=\"72\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 0.3<\/text><text x=\"72\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">1 pasos<\/text><rect x=\"138\" y=\"135\" width=\"64\" height=\"65\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"170\" y=\"127\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">25 %<\/text><text x=\"170\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 0.6<\/text><text x=\"170\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">2 pasos<\/text><rect x=\"236\" y=\"167.5\" width=\"64\" height=\"32.5\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"268\" y=\"159.5\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">12.5 %<\/text><text x=\"268\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 0.9<\/text><text x=\"268\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">3 pasos<\/text><rect x=\"334\" y=\"183.75\" width=\"64\" height=\"16.25\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"366\" y=\"175.75\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">6.25 %<\/text><text x=\"366\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 1.2<\/text><text x=\"366\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">4 pasos<\/text><rect x=\"432\" y=\"195.944\" width=\"64\" height=\"4.056\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"464\" y=\"187.944\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1.56 %<\/text><text x=\"464\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 1.8<\/text><text x=\"464\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">6 pasos<\/text><rect x=\"530\" y=\"196\" width=\"64\" height=\"4\" rx=\"6\" fill=\"#ffd400\"\/><text x=\"562\" y=\"188\" font-size=\"12\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">0.78 %<\/text><text x=\"562\" y=\"218\" font-size=\"13\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">ND 2.1<\/text><text x=\"562\" y=\"234\" font-size=\"11\" fill=\"#9aa09d\" text-anchor=\"middle\">7 pasos<\/text><\/svg><figcaption>Cada 0,3 de densidad resta un paso de luz.<\/figcaption><\/figure>\n<ul><li><strong>ND 0.3, 0.6, 0.9:<\/strong> 1, 2 o 3 pasos menos, para d\u00edas nublados o luz moderada.<\/li><li><strong>ND 1.2 y superiores:<\/strong> 4 pasos y m\u00e1s, para sol pleno con gran apertura.<\/li><li><strong>IRND:<\/strong> algunos sensores son sensibles al infrarrojo; con un ND fuerte, los negros pueden virar a magenta o marr\u00f3n. Un IRND filtra tambi\u00e9n el infrarrojo para evitarlo.<\/li><li><strong>ND variable:<\/strong> pr\u00e1ctico en foto y reportaje, pero puede a\u00f1adir dominantes de color o un patr\u00f3n oscuro en cruz con densidad alta. En rodajes exigentes preferimos ND fijos.<\/li><\/ul>\n<h2 class=\"wp-block-heading\">El polarizador<\/h2>\n<p>El filtro polarizador aten\u00faa los reflejos en el agua, el cristal o las hojas, oscurece un cielo azul y a\u00f1ade profundidad a los colores. Resta aproximadamente de uno y medio a dos pasos. Se ajusta gir\u00e1ndolo y su efecto depende del \u00e1ngulo respecto al sol. Es muy \u00fatil para inmobiliaria, el mar y los escaparates.<\/p>\n<h2 class=\"wp-block-heading\">Los ND degradados<\/h2>\n<p>Un ND degradado est\u00e1 te\u00f1ido en una mitad y claro en la otra. Colocado con la parte oscura sobre el cielo, equilibra la exposici\u00f3n de un paisaje. Existe con transici\u00f3n suave o dura; un horizonte irregular (\u00e1rboles, edificios) se nota enseguida.<\/p>\n<h2 class=\"wp-block-heading\">Los filtros de difusi\u00f3n<\/h2>\n<p>Los sensores modernos son muy n\u00edtidos. Los filtros de difusi\u00f3n suavizan la imagen: hacen que las fuentes de luz se expandan ligeramente, reducen el contraste local y favorecen los rostros.<\/p>\n<figure class=\"tdp-fig\" style=\"margin:22px 0\"><svg viewBox=\"0 0 640 220\" role=\"img\" aria-label=\"Esquema de una fuente de luz con una difusi\u00f3n cada vez m\u00e1s fuerte, de 1\/8 a 2\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" font-family=\"Inter,Helvetica,Arial,sans-serif\" style=\"width:100%;height:auto;display:block\"><rect width=\"640\" height=\"220\" fill=\"#161817\"\/><defs><radialGradient id=\"pm0\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.18\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><radialGradient id=\"pm1\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.22\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><radialGradient id=\"pm2\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.26\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><radialGradient id=\"pm3\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.3\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><radialGradient id=\"pm4\"><stop offset=\"0\" stop-color=\"#fff\" stop-opacity=\"1\"\/><stop offset=\"0.33999999999999997\" stop-color=\"#fff\" stop-opacity=\".95\"\/><stop offset=\"1\" stop-color=\"#fff\" stop-opacity=\"0\"\/><\/radialGradient><\/defs><text x=\"20\" y=\"30\" font-size=\"15\" font-weight=\"700\" fill=\"#ffd400\">Black Pro-Mist: intensidad de la difusi\u00f3n<\/text><rect x=\"18\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"70\" cy=\"112\" r=\"22\" fill=\"url(#pm0)\" opacity=\"0.5\"\/><circle cx=\"70\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"70\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1\/8<\/text><rect x=\"143\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"195\" cy=\"112\" r=\"29\" fill=\"url(#pm1)\" opacity=\"0.62\"\/><circle cx=\"195\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"195\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1\/4<\/text><rect x=\"268\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"320\" cy=\"112\" r=\"36\" fill=\"url(#pm2)\" opacity=\"0.74\"\/><circle cx=\"320\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"320\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1\/2<\/text><rect x=\"393\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"445\" cy=\"112\" r=\"43\" fill=\"url(#pm3)\" opacity=\"0.86\"\/><circle cx=\"445\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"445\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">1<\/text><rect x=\"518\" y=\"60\" width=\"104\" height=\"104\" rx=\"10\" fill=\"#0d0e0e\" stroke=\"#4a4f4c\"\/><circle cx=\"570\" cy=\"112\" r=\"50\" fill=\"url(#pm4)\" opacity=\"0.98\"\/><circle cx=\"570\" cy=\"112\" r=\"6\" fill=\"#fff\"\/><text x=\"570\" y=\"190\" font-size=\"14\" font-weight=\"700\" fill=\"#f2f0eb\" text-anchor=\"middle\">2<\/text><text x=\"320\" y=\"212\" font-size=\"12\" fill=\"#9aa09d\" text-anchor=\"middle\">Cuanto mayor es el grado, m\u00e1s marcado es el resplandor alrededor de las fuentes<\/text><\/svg><figcaption>Los grados de difusi\u00f3n, de 1\/8 (muy discreto) a 2 (marcado).<\/figcaption><\/figure>\n<ul><li><strong>Pro-Mist y Black Pro-Mist:<\/strong> un resplandor alrededor de las altas luces. El Black Pro-Mist protege m\u00e1s los negros; el Pro-Mist los eleva un poco. Los grados van de 1\/8 a 2 y m\u00e1s.<\/li><li><strong>Hollywood Black Magic y Glimmerglass:<\/strong> variantes que expanden m\u00e1s o menos las fuentes y la textura.<\/li><li><strong>Classic Soft y Soft\/FX:<\/strong> suavizan sobre todo el detalle y la piel, con menos halo.<\/li><li><strong>Filtros de estela (streak):<\/strong> estelas horizontales alrededor de las fuentes, inspiradas en el anam\u00f3rfico.<\/li><\/ul>\n<h2 class=\"wp-block-heading\">\u00bfC\u00f3mo elegir?<\/h2>\n<figure class=\"wp-block-table\"><table><thead><tr><th>Filtro<\/th><th>Efecto<\/th><th>Uso t\u00edpico<\/th><th>Cuidado<\/th><\/tr><\/thead><tbody><tr><td>ND fijo<\/td><td>Menos luz<\/td><td>Exteriores, gran apertura<\/td><td>IR en algunos sensores<\/td><\/tr><tr><td>IRND<\/td><td>Menos luz, sin deriva IR<\/td><td>ND fuerte<\/td><td>Coste<\/td><\/tr><tr><td>Polarizador<\/td><td>Reflejos, cielo, saturaci\u00f3n<\/td><td>Inmobiliaria, mar, escaparates<\/td><td>Resta de 1,5 a 2 pasos<\/td><\/tr><tr><td>ND degradado<\/td><td>Equilibrar el cielo<\/td><td>Paisajes, dron<\/td><td>Horizonte irregular<\/td><\/tr><tr><td>Black Pro-Mist 1\/8 a 1\/4<\/td><td>Suaviza, resplandor discreto<\/td><td>Entrevistas, lifestyle<\/td><td>Probar con tus fuentes<\/td><\/tr><tr><td>Difusi\u00f3n fuerte<\/td><td>Ambiente on\u00edrico<\/td><td>Ficci\u00f3n, videoclip<\/td><td>P\u00e9rdida de nitidez<\/td><\/tr><\/tbody><\/table><\/figure>\n<div class=\"tdp-tip\"><p><strong>Nuestro enfoque.<\/strong> Un ND adecuado para mantener la velocidad de obturaci\u00f3n correcta, un Black Pro-Mist ligero para suavizar im\u00e1genes demasiado n\u00edtidas y siempre una prueba antes del rodaje: el efecto depende del objetivo, de la apertura y de las fuentes en el encuadre. Nuestro equipo est\u00e1 en la p\u00e1gina de <a href=\"https:\/\/thatdog.fr\/index.php\/es\/equipamiento\/\">equipamiento<\/a>.<\/p><\/div>\n<p>La difusi\u00f3n se simula mal en posproducci\u00f3n: el resplandor nace en la \u00f3ptica y sigue la luz real. Un ND, en cambio, es imprescindible para mantener un aspecto cinematogr\u00e1fico a plena luz del d\u00eda.<\/p>\n<div class=\"tdp-cta\"><p><strong>\u00bfUn look por definir para tu pel\u00edcula?<\/strong><br>Cu\u00e9ntanos el ambiente que buscas: elegimos las \u00f3pticas y los filtros.<\/p><a href=\"https:\/\/thatdog.fr\/index.php\/es\/solicitar-presupuesto\/\">Solicitar presupuesto \u2192<\/a><\/div>","_et_gb_content_width":"","footnotes":""},"categories":[264],"tags":[188,168],"class_list":["post-1187","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mag-a-es","tag-rodaje","tag-video-es"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Filtros \u00f3pticos de cine: ND, Mist, difusi\u00f3n y polarizadores<\/title>\n<meta name=\"description\" content=\"ND, IRND, polarizador, Black Pro-Mist y difusi\u00f3n: para qu\u00e9 sirven los filtros 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