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<h2 id="see-also">See also</h2> <ul><li><a href="/facts/Remote_shutter/DD2DWd5J">Remote shutter</a></li> <li><a href="/facts/Selfie_stick/5kQtdfld">Selfie stick</a></li> <li><a href="/facts/Bulb_(photography)/5uRW43Lh">Bulb (photography)</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>David D. Busch (2006). Digital Photography All-in-One Desk Reference for Dummies. For Dummies. p. 260. ISBN 978-0-470-03743-0. <a href="978-0-470-03743-0" target="_blank">978-0-470-03743-0</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Peter G. Dorrell (1994). Photography in Archaeology and Conservation. Cambridge University Press. p. 42. ISBN 978-0-521-45554-1. <a href="978-0-521-45554-1" target="_blank">978-0-521-45554-1</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> </ol>