Editing Pinhole camera (section)

==Natural pinhole phenomenon==
[[File:Solar eclipse crescent projections on Cowrock Mountain, GA - August 21, 2017.jpg|thumb|[[Solar eclipse of August 21, 2017|Solar eclipse]] crescent-shaped projections produced by natural pinholes formed by tree leaves]]

A pinhole camera effect can sometimes occur naturally. Small "pinholes" formed by the gaps between overlapping tree leaves will create replica images of the sun on flat surfaces. During a [[solar eclipse]], this produces small crescents, and in the case of an [[Solar eclipse#Types|annular eclipse]] hollow rings.<ref>{{cite web |last1=Crimmins |first1=Peter |title=See the solar eclipse using nature’s pinhole camera, tree leaves |url=https://whyy.org/articles/see-the-solar-eclipse-using-natures-pinhole-camera-tree-leaves/ |publisher=[[WHYY-TV]] |date=August 17, 2017}}</ref> [[Disco ball]]s can also function as natural reflective pinhole cameras (also known as a [[pinhead mirror]]).<ref>{{cite journal |last1=Cumming |first1=Robert J |last2=Pietrow |first2=Alexander G M |last3=Pietrow |first3=Livia |last4=Cavallius |first4=Maria |last5=Petit dit de la Roche |first5=Dominique |last6=Pietrow |first6=Casper |last7=Schroetter |first7=Ilane |last8=Skan |first8=Moa |title=Why every observatory needs a disco ball |journal=Physics Education |date=March 2024 |volume=59 |issue=2 |pages=025012 |doi=10.1088/1361-6552/ad1fa0 |arxiv=2309.14173 |bibcode=2024PhyEd..59b5012C }}</ref>