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<p>In <a href="Photography" title="Photography">photography</a>, the <b>shutter-release button</b> (s just <b>shutter release</b> or <b>shutter button</b>) is a <a href="Push-button" title="Push-button">push-button</a> found on many <a href="Cameras" class="mw-redirect" title="Cameras">cameras</a>, used to record photographs.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> When pressed, the <a href="Shutter_(photography)" title="Shutter (photography)">shutter</a> of the camera is "released", so that it opens to capture a picture, and then closes, allowing an exposure time as determined by the <a href="Shutter_speed" title="Shutter speed">shutter speed</a> setting (which may be automatic). Some cameras also utilize an electronic shutter, as opposed to a mechanical shutter.
</p><p>The shutter-release button is one of the most basic features of a dedicated handheld camera. Mobile devices such as modern <a href="Smartphone" title="Smartphone">smartphones</a> have a <a href="Touchscreen" title="Touchscreen">touchscreen</a> button for capturing photos, but also have a physical shutter button as well, as the sound volume buttons are used as such, with exception of some phones having a dedicated shutter button.
</p><p>The term "release" comes from old mechanical shutters that were "cocked" or "tensioned" by one lever, and then "released" by another.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> In modern or <a href="Digital_photography" title="Digital photography">digital photography</a>, this notion is less meaningful, so the term "shutter button" or simply "capture button" is more used.
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<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
<ul><li><a href="Remote_shutter" class="mw-redirect" title="Remote shutter">Remote shutter</a></li>
<li><a href="Selfie_stick" title="Selfie stick">Selfie stick</a></li>
<li><a href="Bulb_(photography)" title="Bulb (photography)">Bulb (photography)</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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</style><cite id="CITEREFDavid_D._Busch2006" class="citation book cs1">David D. Busch (2006). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=-XENqZmgWm0C&dq=shutter-button+shutter-release+shutter-release-button&pg=PA260"><i>Digital Photography All-in-One Desk Reference for Dummies</i></a>. For Dummies. p. 260. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-470-03743-0</bdi>.</cite></span>
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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">
<cite id="CITEREFPeter_G._Dorrell1994" class="citation book cs1">Peter G. Dorrell (1994). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=RkBuiowOu1MC&dq=shutter+cocked+tension+lever+release&pg=PA42"><i>Photography in Archaeology and Conservation</i></a>. Cambridge University Press. p. 42. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-521-45554-1</bdi>.</cite></span>
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