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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
<title>NODAL — Series A 40mm T1.9</title>
<meta name="description" content="A 40mm T1.9 cine prime where every surface exists because the light required it. Sharp wide open, never clinical.">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Martian+Mono:wdth,wght@75..112.5,100..800&display=swap" rel="stylesheet">
<link rel="stylesheet" href="styles.css">
</head>
<body>
<div id="vh-probe" aria-hidden="true"></div>
<!-- The pointer. Built by JS from the lens's own blade count. -->
<div class="cursor" data-cursor aria-hidden="true"><svg viewBox="-20 -20 40 40"><polygon data-cursor-iris></polygon></svg></div>
<div class="cursor-mark" data-cursor-mark aria-hidden="true"></div>
<canvas id="stage" aria-hidden="true"></canvas>
<div class="pool" aria-hidden="true"></div>
<div class="grain" aria-hidden="true"></div>
<!-- Persistent chrome. Not a header: fixed marks in the corners, so the page
never has a bar sitting on top of the object. -->
<div class="chrome" aria-hidden="true">
<div class="chrome-tl">
<span class="mark">NODAL</span>
<span class="mark-sub">Optical Works</span>
</div>
<div class="chrome-tr">
<span data-spec="designation">Series A</span>
</div>
<div class="chrome-tc">
<span data-rail-now></span>
</div>
</div>
<!-- Progress: a bar across the top edge, ticked once per chapter. The native
scrollbar is hidden, so this is the only indicator on the page. JS places
the ticks from the sections themselves. -->
<nav class="rail" aria-hidden="true">
<span class="rail-track"></span>
<ol class="rail-ticks" data-rail-ticks></ol>
<i class="rail-index" data-rail-index></i>
</nav>
<main>
<!-- ───────────────────────── 00 · HERO ─────────────────────────
Dead on the optical axis, tight enough that the front element fills the
frame. It opens black because you are looking into an unlit tube, which
is the honest state of that shot rather than a fade we invented. -->
<section class="chapter chapter--hero" data-chapter data-label="Cine prime">
<div class="pad pad--hero">
<!-- Two blocks flanking the object, arriving from the edge they sit on,
and a foot carrying the ask and the numbers. Nothing here repeats
anything else on the plate: the designation lives in the chrome, the
chapter name is suppressed, and the two copy blocks make different
arguments. -->
<div class="hero-body">
<div class="hero-copy hero-copy--left">
<!-- Two words, one per line, both at full foreground. A dimmed
setup line needs a setup word; "Wide open." has no spare word to
give away, so the value split comes off and the whole thing sits
forward. -->
<h1 class="display display--xl">
<span class="line" data-reveal-line>Wide</span>
<span class="line" data-reveal-line>open.</span>
</h1>
<!-- Fades in place. It used to open from zero height and shove the
headline upward, which meant the one fixed thing in the frame
moved every time the copy arrived. -->
<p class="lede">
The new Series A holds its corners, its contrast and its colour at full
aperture. There is no reason to close it.
</p>
</div>
<div class="hero-copy hero-copy--right">
<p class="tag">The rendering</p>
<!-- A slow vertical feed, masked to nothing at both ends so lines
arrive and leave rather than appearing and cutting off. The list
is duplicated once and the track travels exactly -50%, which is
what makes the loop seamless. -->
<div class="ticker">
<ul class="ticker-track" data-ticker>
<li>Sharp corner to corner, wide open</li>
<li>Focus that rolls rather than snaps</li>
<li>Under 1% breathing across the throw</li>
<li>Colour matched across the set</li>
<li>Highlights round off, never clip</li>
<li>Skin keeps its warmth at T1.9</li>
<li>Bokeh stays round to the frame edge</li>
<li>No focus shift down to T5.6</li>
<li>Flare is controlled, never sterile</li>
<li>Longitudinal colour under 4 µm</li>
<li>Ten elements in eight groups</li>
<li>300° throw, geared at 0.8 module</li>
<li>One front diameter across the set</li>
<li>Holds contrast in backlight</li>
<li>Nine blades, round to T8</li>
<li>Distortion under 0.4% at the corner</li>
<li>Shimmable at the mount</li>
<li>1.4 kg, balanced behind the rods</li>
</ul>
</div>
</div>
</div>
<div class="hero-foot">
<!-- The clip the buttons slide out of. See .hero-actions-clip. -->
<div class="hero-actions-clip">
<div class="hero-actions">
<a class="cta cta--fill" href="mailto:optics@nodal.works">
<span>Order</span>
</a>
<a class="cta cta--ghost" href="mailto:optics@nodal.works?subject=Datasheet">
<span>Datasheet</span>
</a>
</div>
</div>
<!-- Drawn from the centre outward during act one, so the opening has
a second element besides the name and the frame gets an anchor
before anything else lands on it. -->
<span class="hero-rule" data-hero-rule aria-hidden="true"></span>
<dl class="hero-metrics">
<div><dd data-spec="tstopFull">—</dd><dt>Wide open</dt></div>
<div><dd data-spec="rms">—</dd><dt>Centre spot</dt></div>
<div><dd>100 %</dd><dt>Corner illumination</dt></div>
<div><dd>0.45 m</dd><dt>Close focus</dt></div>
<div><dd>PL · LPL</dd><dt>Mount</dt></div>
</dl>
</div>
</div>
</section>
<!-- ───────────────────────── 01 · RENDERING ─────────────────────────
What a cinematographer actually buys: what it does to an image. -->
<section class="chapter chapter--object" data-chapter data-label="01 — Rendering">
<div class="pad pad--left">
<h2 class="title">
<span class="line" data-reveal-line>Sharp wide open.</span>
<span class="line accent" data-reveal-line>Never clinical.</span>
</h2>
<p class="body" data-reveal>
Wide open at T1.9 it resolves detail you can still grade, then lets go of it
gently. Focus rolls off instead of falling off a cliff, so faces sit inside the
frame rather than being cut out of it. The corners stay lit at full aperture.
</p>
<dl class="specs" data-reveal>
<div><dt>Wide open at</dt><dd data-spec="tstopFull">—</dd></div>
<div><dt>Centre spot, wide open</dt><dd data-spec="rms">—</dd></div>
<div><dt>Corner illumination</dt><dd>100 %</dd></div>
<div><dt>Close focus</dt><dd>0.45 m</dd></div>
<div><dt>Covers</dt><dd data-spec="circle">—</dd></div>
<div><dt>Angle of view</dt><dd data-spec="aov">—</dd></div>
<div><dt>Front diameter</dt><dd data-spec="frontdia">—</dd></div>
<div><dt>Mount</dt><dd>PL · LPL</dd></div>
</dl>
</div>
</section>
<!-- ───────────────────────── 02 · BLANK BEAT ─────────────────────────
Two cards in one frame. The beat is the only chapter with room for a
statement — the object is small, lifted and pushed back — so the claim
that used to drift across the exploded view is made here instead, where
it has air. The swap is scrubbed by scroll, not triggered, so it reverses
exactly like everything else. -->
<section class="chapter chapter--beat" data-chapter data-label="02 — The cost">
<div class="pad pad--centre pad--beat">
<div class="beat-stack">
<div class="beat-card" data-beat="a">
<h2 class="display display--l">
<span class="line" data-reveal-line>Then you</span>
<span class="line accent" data-reveal-line>take it apart.</span>
</h2>
<p class="beat-sub">
Ten elements in eight groups. Not one of them is there to make up
the numbers.
</p>
</div>
<div class="beat-card" data-beat="b">
<h2 class="display display--l">
<span class="line" data-reveal-line>This is what</span>
<span class="line accent" data-reveal-line>T<span data-spec="tstop2">1.9</span> costs.</span>
</h2>
<p class="beat-sub">
Two anomalous-dispersion elements and a cemented triplet, carried so
the corners hold at full aperture.
</p>
</div>
</div>
</div>
</section>
<!-- ───────────────────────── 03 · INSIDE (signature) ───────────────────────── -->
<section class="chapter chapter--explode" data-chapter data-label="03 — Inside">
<div class="pad pad--inside">
<!-- No headline and no eyebrow. The claim was made in the beat, the
chapter number lives in the top bar, and the page's best moment does
not need a caption sitting on top of it. -->
<!-- Element callouts. Positions are written by JS from the projected
screen position of each group, so a label always sits on its glass. -->
<ol class="legend" data-legend></ol>
</div>
<div class="callouts" data-callouts aria-hidden="true"></div>
<!-- The inspector. Filled and positioned from the group under the pointer
once the stack is fully open. -->
<div class="probe" data-probe aria-hidden="true"></div>
</section>
<!-- ───────────────────────── 04 · PROOF ───────────────────────── -->
<section class="chapter chapter--trace" data-chapter data-label="04 — Proof">
<div class="pad pad--figure">
<!-- "We can show you / the light." put a 15-character line over a
10-character one, and the orphaned "you" was doing the damage at
either end of the break. This says the same thing for a Proof
chapter and splits 12/11. -->
<h2 class="title">
<span class="line" data-reveal-line>We can prove</span>
<span class="line accent" data-reveal-line>every claim.</span>
</h2>
<p class="body" data-reveal>
Three bundles enter: one down the axis, one at two thirds of the field, one at
the corner. Each is refracted at the sphere of every surface it meets. This is
not an illustration of the light path. It is the light path.
</p>
<dl class="specs specs--stack" data-reveal>
<div><dt>Centre spot</dt><dd data-spec="rms">—</dd></div>
<div><dt>Focal plane</dt><dd data-spec="focus">—</dd></div>
<div><dt>Elements</dt><dd data-spec="elements">—</dd></div>
</dl>
</div>
</section>
<!-- ───────────────────────── 05 · THE SET ───────────────────────── -->
<section class="chapter chapter--series" data-chapter data-label="05 — The set">
<div class="pad pad--series">
<!-- "You don't buy one." was a riddle: it withholds the subject and
makes the reader solve for it. This states the situation first, and
the body then says what the matching actually buys you on the day. -->
<h2 class="title">
<span class="line" data-reveal-line>Nobody shoots</span>
<span class="line accent" data-reveal-line>with one lens.</span>
</h2>
<p class="body body--set" data-reveal>
So a prime is only as good as the ones beside it. Change focal length
mid-setup and nothing else moves: same T-stop, same colour, same 95mm
front, same gear positions. The lighting holds, the matte box stays on,
the focus marks stay good.
</p>
<ol class="index">
<li data-reveal data-set="0">
<span class="idx">01</span>
<div class="idx-body">
<h3>25mm</h3>
<p class="idx-meta">T1.9 · 0.28m · 95mm front</p>
</div>
</li>
<li data-reveal class="is-current" data-set="1">
<span class="idx">02</span>
<div class="idx-body">
<h3>40mm</h3>
<p class="idx-meta">T<span data-spec="tstop2">1.9</span> · 0.45m · 95mm front</p>
</div>
</li>
<li data-reveal data-set="2">
<span class="idx">03</span>
<div class="idx-body">
<h3>75mm</h3>
<p class="idx-meta">T2.1 · 0.75m · 95mm front</p>
</div>
</li>
</ol>
<!-- Filled and shown by JS on hover. See SET in src/main.js. -->
<div class="setcard" data-setcard aria-hidden="true"></div>
</div>
</section>
<!-- ───────────────────────── 06 · ENQUIRE ───────────────────────── -->
<section class="chapter chapter--end" data-chapter data-label="06 — Order">
<div class="pad pad--end">
<!-- The object stands dead centre so the glow behind it actually does
something, and the two columns flank it: the promise on the left,
the terms and the ask on the right. -->
<div class="end-body">
<div class="end-copy end-copy--left">
<h2 class="display display--l">
<span class="line" data-reveal-line>Available</span>
<span class="line accent" data-reveal-line>to order.</span>
</h2>
<p class="body body--end" data-reveal>
Built in batches of three and checked against its own prescription
before it leaves the bench. Every set ships with its measured data,
not a typical curve.
</p>
</div>
<div class="end-copy end-copy--right" data-reveal>
<p class="tag">Series A · 40mm · T<span data-spec="tstop2">1.9</span></p>
<p class="end-price"><span>From</span>£14,500</p>
<dl class="specs specs--stack end-specs">
<div><dt>Matched set of three</dt><dd>£39,500</dd></div>
<div><dt>Mount</dt><dd>PL · LPL</dd></div>
<div><dt>Lead time</dt><dd>14 weeks</dd></div>
<div><dt>Ships with</dt><dd>Measured data</dd></div>
</dl>
<div class="end-actions">
<a class="cta cta--fill" href="mailto:optics@nodal.works?subject=Order%20%C2%B7%20Series%20A%2040mm">
<span>Order</span>
</a>
<a class="cta cta--ghost" href="mailto:optics@nodal.works?subject=Series%20A%2040mm">
<span>More info</span>
</a>
</div>
</div>
</div>
<!-- Below the whole row, not inside it. Pinned to the grid's end put it
at the foot of the ROW, which stops well above the standing lens, so
it landed across the barrel. Hrefs are placeholders. -->
<div class="end-social" data-reveal>
<ul class="social">
<li><a href="#">Instagram</a></li>
<li><a href="#">X</a></li>
<li><a href="#">LinkedIn</a></li>
</ul>
<a class="end-mail" href="mailto:optics@nodal.works">optics@nodal.works</a>
</div>
</div>
</section>
</main>
<noscript>
<p class="noscript">This page draws a lens from its optical prescription in real time, so it needs JavaScript.</p>
</noscript>
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