{"product_id":"cosina-135-mm-f-2-8-x-pentax","title":"COSINA 135 mm F\/2.8 X Pentax","description":"COSINA 135 mm F\/2.8 X Pentax\n\u003ch2 data-start=\"161\" data-end=\"242\"\u003e\u003cstrong data-start=\"164\" data-end=\"242\"\u003eCOSINA 135 mm F\/2.8 X Pentax – Teleobiettivo Vintage Manuale con Carattere\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"244\" data-end=\"264\"\u003e\u003cstrong data-start=\"248\" data-end=\"264\"\u003eIntroduzione\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"265\" data-end=\"680\"\u003eIl \u003cstrong data-start=\"268\" data-end=\"340\"\u003eteleobiettivo Cosina 135 mm F\/2.8 compatibile con montatura Pentax K\u003c\/strong\u003e è un classico obiettivo manual focus degli anni ’70\/’80, apprezzato dagli appassionati di fotografia analogica e digitale adattata. Offre un’ottima combinazione di lunghezza focale, apertura luminosa e resa ottica dal carattere vintage, perfetto per ritratti, street photography e fotografia creativa.\u003c\/p\u003e\n\n\n\u003chr data-start=\"682\" data-end=\"685\"\u003e\n\n\u003ch2 data-start=\"687\" data-end=\"729\"\u003e\u003cstrong data-start=\"690\" data-end=\"729\"\u003eCaratteristiche Tecniche Principali\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"731\" data-end=\"1355\"\u003e🔍 \u003cstrong data-start=\"734\" data-end=\"755\"\u003eLunghezza Focale:\u003c\/strong\u003e 135 mm — ideale per isolare il soggetto e comprimere la prospettiva nei ritratti.\u003cbr data-start=\"837\" data-end=\"840\"\u003e💡 \u003cstrong data-start=\"843\" data-end=\"864\"\u003eApertura Massima:\u003c\/strong\u003e f\/2.8 — aperture ampie per un bokeh morbido e prestazioni in luce scarsa.\u003cbr data-start=\"938\" data-end=\"941\"\u003e🛠️ \u003cstrong data-start=\"945\" data-end=\"963\"\u003eMessa a Fuoco:\u003c\/strong\u003e manuale (senza autofocus).\u003cbr data-start=\"990\" data-end=\"993\"\u003e🔄 \u003cstrong data-start=\"996\" data-end=\"1010\"\u003eMontatura:\u003c\/strong\u003e Pentax K (manual focus) oppure varianti con adattatori.\u003cbr data-start=\"1066\" data-end=\"1069\"\u003e📏 \u003cstrong data-start=\"1072\" data-end=\"1109\"\u003eDistanza Minima di Messa a Fuoco:\u003c\/strong\u003e ca. 1,2 – 1,5 m (varia a seconda delle versioni).\u003cbr data-start=\"1159\" data-end=\"1162\"\u003e🌀 \u003cstrong data-start=\"1165\" data-end=\"1197\"\u003eCostruzione Ottica Classica:\u003c\/strong\u003e 4 elementi in 4 gruppi (o varianti simili).\u003cbr data-start=\"1241\" data-end=\"1244\"\u003e📏 \u003cstrong data-start=\"1247\" data-end=\"1261\"\u003eDiaframma:\u003c\/strong\u003e tipicamente 6 lamelle (alcune versioni MC o Cosinon-T).\u003c\/p\u003e\n\n\n\u003chr data-start=\"1357\" data-end=\"1360\"\u003e\n\n\u003ch2 data-start=\"1362\" data-end=\"1396\"\u003e\u003cstrong data-start=\"1365\" data-end=\"1396\"\u003eVarianti e Nomi Commerciali\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1398\" data-end=\"1542\"\u003eLa serie Cosina\/Cosinon include diverse versioni con nomi simili (alcune prodotte per marchi OEM) ma con design ottico e caratteristiche affini:\u003c\/p\u003e\n\n\u003cul data-start=\"1544\" data-end=\"1758\"\u003e\n \t\u003cli data-start=\"1544\" data-end=\"1647\"\u003e\n\u003cp data-start=\"1546\" data-end=\"1647\"\u003e\u003cstrong data-start=\"1546\" data-end=\"1587\"\u003e\u003cspan class=\"entity-underline hover:entity-accent inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eCosinon MC Auto 135mm f\/2.8\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e – versione manuale con buona nitidezza e bokeh piacevole.\u003c\/p\u003e\n\u003c\/li\u003e\n \t\u003cli data-start=\"1648\" data-end=\"1758\"\u003e\n\u003cp data-start=\"1650\" data-end=\"1758\"\u003e\u003cstrong data-start=\"1650\" data-end=\"1691\"\u003e\u003cspan class=\"entity-underline hover:entity-accent inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eCosina Cosinon Auto MC 135mm F2.8 Monture M42\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e – variante con attacco M42 che richiede adattatore per Pentax K.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1760\" data-end=\"1932\"\u003eQuesti obiettivi sono spesso venduti come “Cosinon”, “Super Carenar”, “Revuenon” o altri nomi, ma condividono lo stesso progetto base.\u003c\/p\u003e\n\n\n\u003chr data-start=\"1934\" data-end=\"1937\"\u003e\n\n\u003ch2 data-start=\"1939\" data-end=\"1965\"\u003e\u003cstrong data-start=\"1942\" data-end=\"1965\"\u003ePrestazioni Ottiche\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1967\" data-end=\"2643\"\u003e📸 \u003cstrong data-start=\"1970\" data-end=\"1984\"\u003eNitidezza:\u003c\/strong\u003e sorprendentemente buona, soprattutto tra f\/4 e f\/8; può risultare un po’ morbida a tutta apertura ma migliora rapidamente chiudendo il diaframma. \u003cbr data-start=\"2168\" data-end=\"2171\"\u003e🎨 \u003cstrong data-start=\"2174\" data-end=\"2184\"\u003eBokeh:\u003c\/strong\u003e morbido e gradevole, ideale per ritratti e isolamento del soggetto. \u003cbr data-start=\"2290\" data-end=\"2293\"\u003e🌈 \u003cstrong data-start=\"2296\" data-end=\"2312\"\u003eAberrazioni:\u003c\/strong\u003e alcune aberrazioni cromatiche soprattutto ai bordi a piena apertura, ma in genere gestibili con chiusura del diaframma o in post-produzione. \u003cbr data-start=\"2491\" data-end=\"2494\"\u003e⚙️ \u003cstrong data-start=\"2497\" data-end=\"2511\"\u003eUsabilità:\u003c\/strong\u003e costruzione solida, anello di messa a fuoco fluido e spesso una lente con paraluce integrato.\u003c\/p\u003e\n\n\n\u003chr data-start=\"2645\" data-end=\"2648\"\u003e\n\n\u003ch2 data-start=\"2650\" data-end=\"2690\"\u003e\u003cstrong data-start=\"2653\" data-end=\"2690\"\u003ePerché Sceglierlo? (Pro e Contro)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"2692\" data-end=\"2710\"\u003e✅ \u003cstrong data-start=\"2698\" data-end=\"2710\"\u003eVantaggi\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul data-start=\"2711\" data-end=\"3039\"\u003e\n \t\u003cli data-start=\"2711\" data-end=\"2836\"\u003e\n\u003cp data-start=\"2713\" data-end=\"2836\"\u003e\u003cstrong data-start=\"2713\" data-end=\"2735\"\u003ePrezzo accessibile\u003c\/strong\u003e: uno dei modi più economici per ottenere un 135 mm luminoso.\u003c\/p\u003e\n\u003c\/li\u003e\n \t\u003cli data-start=\"2837\" data-end=\"2936\"\u003e\n\u003cp data-start=\"2839\" data-end=\"2936\"\u003e\u003cstrong data-start=\"2839\" data-end=\"2862\"\u003eCostruzione robusta\u003c\/strong\u003e e piacevole esperienza manuale.\u003c\/p\u003e\n\u003c\/li\u003e\n \t\u003cli data-start=\"2937\" data-end=\"3039\"\u003e\n\u003cp data-start=\"2939\" data-end=\"3039\"\u003e\u003cstrong data-start=\"2939\" data-end=\"2970\"\u003eLook vintage caratteristico\u003c\/strong\u003e con resa tonale particolare.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"3041\" data-end=\"3060\"\u003e❌ \u003cstrong data-start=\"3047\" data-end=\"3060\"\u003eSvantaggi\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul data-start=\"3061\" data-end=\"3423\"\u003e\n \t\u003cli data-start=\"3061\" data-end=\"3146\"\u003e\n\u003cp data-start=\"3063\" data-end=\"3146\"\u003e\u003cstrong data-start=\"3063\" data-end=\"3083\"\u003eNiente autofocus\u003c\/strong\u003e — solo manual focus.\u003c\/p\u003e\n\u003c\/li\u003e\n \t\u003cli data-start=\"3147\" data-end=\"3277\"\u003e\n\u003cp data-start=\"3149\" data-end=\"3277\"\u003e\u003cstrong data-start=\"3149\" data-end=\"3204\"\u003ePrestazioni ottiche non al livello di lenti moderne\u003c\/strong\u003e (come Pentax FA o Pentax DA*).\u003c\/p\u003e\n\u003c\/li\u003e\n \t\u003cli data-start=\"3278\" data-end=\"3423\"\u003e\n\u003cp data-start=\"3280\" data-end=\"3423\"\u003e\u003cstrong data-start=\"3280\" data-end=\"3307\"\u003eContrasto e aberrazioni\u003c\/strong\u003e possono essere inferiori rispetto alle lenti contemporanee ad alta qualità.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr data-start=\"3425\" data-end=\"3428\"\u003e\n\n\u003ch2 data-start=\"3430\" data-end=\"3453\"\u003e\u003cstrong data-start=\"3433\" data-end=\"3453\"\u003eCome Usarlo Oggi\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3454\" data-end=\"3837\"\u003eAnche se pensato per le reflex analogiche, il \u003cstrong data-start=\"3500\" data-end=\"3530\"\u003eCosina 135 mm F\/2.8 Pentax\u003c\/strong\u003e è facilmente adattabile alle fotocamere digitali \u003cstrong data-start=\"3580\" data-end=\"3628\"\u003ePentax K digital o mirrorless con adattatore\u003c\/strong\u003e. La lunghezza focale equivalente su sensori APS-C (crop 1.5x) si traduce in circa \u003cstrong data-start=\"3711\" data-end=\"3721\"\u003e200 mm\u003c\/strong\u003e, rendendolo utile anche per fotografia sportiva o naturalistica amatoriale.\u003c\/p\u003e\n\u003cp data-start=\"3454\" data-end=\"3837\"\u003eCOSINA 135 mm F\/2.8 X Pentax\u003c\/p\u003e","brand":"Cosina","offers":[{"title":"Default Title","offer_id":59739772584270,"sku":"137106","price":60.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/7681\/8510\/files\/DSC_2342.jpg?v=1779704780","url":"https:\/\/b6muaw-1h.myshopify.com\/products\/cosina-135-mm-f-2-8-x-pentax","provider":"Il mio negozio","version":"1.0","type":"link"}