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Effortless exposure, cinematic depth
The Urth 43mm Magnetic ND64 (6 Stop) Filter Plus+ offers smooth, professional light control with a 6 stop reduction, perfect for long exposures, motion blur and wide aperture shots in bright light. The quick magnetic attachment ensures seamless transitions, while the high quality SCHOTT glass and CoraNano™ coating ensure pure colour accuracy and optical fidelity.


Highlights

Fixed 6 stop light reduction for precise exposure control
Quick, secure magnetic attachment for fast installation
Ravg420–680nm ≤ 1% reflection for high optical purity
Ultra thin, distortion free aluminium frame prevents vignetting
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Filter type: Fixed neutral density
Exposure reduction: ND64 (6 stops)
Glass: German SCHOTT B270
Coating: 20 layer CoraNano™
System: Magnetic
Frame: 6061 Aluminium
 Specification
ZnačkaUrth
 Pro lepší péči
     
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    (function () { "use strict"; const CUT_OFF_HOUR = 7; // po 7:00 = start další prac. den /* ========================================================= MANUÁLNÍ DNY MIMO PROVOZ (dovolená, inventura, ...) Formát: "dd.mm" (bez roku) ========================================================= */ const EXTRA_BLOCKED_DATES_DDMM = [ // "03.02", // "04.02", // "15.08", ]; /* ========================================================= */ const ADDITION_SELECTOR = ".p_detail_info_box.p_detail_info_addition"; const AVAIL_SELECTOR = ".p_detail_availability"; const AVAIL_SPAN_SELECTOR = '.p_detail_availability span[data-variant="availability"]'; function pad2(n) { return String(n).padStart(2, "0"); } function formatDDMM(dateLocal) { return `${pad2(dateLocal.getDate())}.${pad2(dateLocal.getMonth() + 1)}.`; } // "Teď" v Europe/Prague (nezávisle na TZ uživatele) function nowInPragueParts() { const dtf = new Intl.DateTimeFormat("cs-CZ", { timeZone: "Europe/Prague", year: "numeric", month: "2-digit", day: "2-digit", hour: "2-digit", minute: "2-digit", second: "2-digit", hour12: false }); const parts = dtf.formatToParts(new Date()); const get = (type) => parts.find(p => p.type === type)?.value; return { year: Number(get("year")), month: Number(get("month")), day: Number(get("day")), hour: Number(get("hour")), minute: Number(get("minute")), second: Number(get("second")) }; } // UTC midnight helper (aby nepřekvapilo DST) function makeDateUTC(y, m, d) { return new Date(Date.UTC(y, m - 1, d, 0, 0, 0)); } function dateToKeyUTC(d) { return `${d.getUTCFullYear()}-${pad2(d.getUTCMonth() + 1)}-${pad2(d.getUTCDate())}`; } // Easter Sunday (Gregorian) function easterSunday(year) { const a = year % 19; const b = Math.floor(year / 100); const c = year % 100; const d = Math.floor(b / 4); const e = b % 4; const f = Math.floor((b + 8) / 25); const g = Math.floor((b - f + 1) / 3); const h = (19 * a + b - d - g + 15) % 30; const i = Math.floor(c / 4); const k = c % 4; const l = (32 + 2 * e + 2 * i - h - k) % 7; const m = Math.floor((a + 11 * h + 22 * l) / 451); const month = Math.floor((h + l - 7 * m + 114) / 31); const day = ((h + l - 7 * m + 114) % 31) + 1; return makeDateUTC(year, month, day); } function addExtraBlockedDatesToSet(holidaysSet, year, todayUTC) { EXTRA_BLOCKED_DATES_DDMM.forEach((ddmm) => { const m = ddmm.match(/^(\d{2})\.(\d{2})$/); if (!m) return; const dd = Number(m[1]); const mm = Number(m[2]); if (!Number.isFinite(dd) || !Number.isFinite(mm) || mm < 1 || mm > 12 || dd < 1 || dd > 31) return; const dThisYear = makeDateUTC(year, mm, dd); holidaysSet.add(dateToKeyUTC(dThisYear)); // pokud už datum letos proběhlo, přidáme i příští rok (praktické při údržbě) if (dThisYear.getTime() < todayUTC.getTime()) { const dNextYear = makeDateUTC(year + 1, mm, dd); holidaysSet.add(dateToKeyUTC(dNextYear)); } }); } function buildCZHolidaysSet(years, todayUTC) { const set = new Set(); years.forEach((y) => { // Fixní svátky CZ const fixed = [ [1, 1], [5, 1], [5, 8], [7, 5], [7, 6], [9, 28], [10, 28], [11, 17], [12, 24], [12, 25], [12, 26] ]; fixed.forEach(([mm, dd]) => set.add(dateToKeyUTC(makeDateUTC(y, mm, dd)))); // Velký pátek (-2) a Velikonoční pondělí (+1) const easter = easterSunday(y); const goodFriday = new Date(easter.getTime() - 2 * 24 * 3600 * 1000); const easterMonday = new Date(easter.getTime() + 1 * 24 * 3600 * 1000); set.add(dateToKeyUTC(goodFriday)); set.add(dateToKeyUTC(easterMonday)); // + ručně blokované dny addExtraBlockedDatesToSet(set, y, todayUTC); }); return set; } function isWeekendUTC(d) { const wd = d.getUTCDay(); return wd === 0 || wd === 6; } function isHolidayUTC(d, holidaysSet) { return holidaysSet.has(dateToKeyUTC(d)); } function isBusinessDayUTC(d, holidaysSet) { return !isWeekendUTC(d) && !isHolidayUTC(d, holidaysSet); } function nextBusinessDayUTC(d, holidaysSet) { let cur = new Date(d.getTime()); do { cur = new Date(cur.getTime() + 24 * 3600 * 1000); } while (!isBusinessDayUTC(cur, holidaysSet)); return cur; } function computeShipBaseUTC(holidaysSet) { const p = nowInPragueParts(); const todayUTC = makeDateUTC(p.year, p.month, p.day); const beforeCutoff = (p.hour < CUT_OFF_HOUR); // 0..6 if (beforeCutoff && isBusinessDayUTC(todayUTC, holidaysSet)) return todayUTC; // po cut-off nebo nepracovní den => nejbližší další pracovní den if (isBusinessDayUTC(todayUTC, holidaysSet)) return nextBusinessDayUTC(todayUTC, holidaysSet); let cur = new Date(todayUTC.getTime()); while (!isBusinessDayUTC(cur, holidaysSet)) { cur = new Date(cur.getTime() + 24 * 3600 * 1000); } return cur; } // "+N" pracovních dnů přesně function addBusinessDaysUTC(startUTC, n, holidaysSet) { let cur = new Date(startUTC.getTime()); let added = 0; while (added < n) { cur = new Date(cur.getTime() + 24 * 3600 * 1000); if (isBusinessDayUTC(cur, holidaysSet)) added++; } return cur; } function normalizeText(s) { return (s || "") .replace(/\u00A0/g, " ") .replace(/[–—]/g, "-") .replace(/\s+/g, " ") .trim(); } function parseAddition(text) { // "8 ks – doručení do 5 pracovních dnů" const t = normalizeText(text); const stockMatch = t.match(/(\d+)\s*ks/i); const daysMatch = t.match(/doru[cč]en[ií]\s*do\s*(\d+)\s*prac/i); if (!stockMatch || !daysMatch) return null; const stock = Number(stockMatch[1]); const leadDays = Number(daysMatch[1]); if (!Number.isFinite(stock) || !Number.isFinite(leadDays)) return null; return { stock, leadDays }; } function getAvailabilityMode() { const avail = document.querySelector(AVAIL_SELECTOR); if (!avail) return { mode: "unknown" }; const schemaLink = avail.querySelector('link[itemprop="availability"]'); const schemaHref = schemaLink?.getAttribute("href") || ""; const span = avail.querySelector(AVAIL_SPAN_SELECTOR); const label = normalizeText(span?.textContent || ""); if (/OutOfStock/i.test(schemaHref) || /Dostupnost k ověření/i.test(label)) { return { mode: "verify", avail, span, label }; } if (/^Skladem/i.test(label)) { return { mode: "local", avail, span, label }; } if (/^Centrální sklad/i.test(label)) { return { mode: "central", avail, span, label }; } return { mode: "unknown", avail, span, label }; } function removeExistingEstimate() { document.querySelectorAll(".delivery-estimate").forEach(el => el.remove()); } function insertEstimateUnderSpan(spanEl, dateDDMM) { removeExistingEstimate(); if (!spanEl || !spanEl.parentNode) return; const line = document.createElement("span"); line.className = "delivery-estimate"; line.textContent = `Obdržíte do ${dateDDMM}`; spanEl.insertAdjacentElement("afterend", line); } function applyDeliveryLogic() { const addition = document.querySelector(ADDITION_SELECTOR); if (addition) addition.classList.add("delivery-hide"); const { mode, span } = getAvailabilityMode(); // verify/unknown => jen schovat addition a nic nepřidávat if (mode === "verify" || mode === "unknown") { removeExistingEstimate(); return; } const p = nowInPragueParts(); const todayUTC = makeDateUTC(p.year, p.month, p.day); const holidays = buildCZHolidaysSet([p.year, p.year + 1], todayUTC); // lokální sklad => +1 prac. den if (mode === "local") { const shipBase = computeShipBaseUTC(holidays); const deliveryUTC = addBusinessDaysUTC(shipBase, 1, holidays); insertEstimateUnderSpan(span, formatDDMM(new Date(deliveryUTC.getTime()))); return; } // centrální sklad => vyčíst z addition if (mode === "central") { const parsed = addition ? parseAddition(addition.textContent) : null; // parsing selže nebo stock=0 => nic nepřidávat if (!parsed || parsed.stock <= 0) { removeExistingEstimate(); return; } const shipBase = computeShipBaseUTC(holidays); const deliveryUTC = addBusinessDaysUTC(shipBase, parsed.leadDays, holidays); if (span) span.textContent = `Centrální sklad ${parsed.stock} ks`; insertEstimateUnderSpan(span, formatDDMM(new Date(deliveryUTC.getTime()))); } } if (document.readyState === "loading") { document.addEventListener("DOMContentLoaded", applyDeliveryLogic); } else { applyDeliveryLogic(); } })();