Benjamin Haldane with Camera, Metlakatla Alaska Town Hall in the background.  This is a detail cropped from a landscape photograph probably by Haldane.  The original is on Commons as
<a href="//commons.wikimedia.org/wiki/File:View_of_Metlakahtla,_Alaska._residences._-_NARA_-_297865.jpg" title="File:View of Metlakahtla, Alaska. residences. - NARA - 297865.jpg">File:View of Metlakahtla, Alaska. residences. - NARA - 297865.jpg</a>, which shows Haldane and an assistant in one corner of a large view of Meltakatla.  That image was probably produced using a view camera and glass plate.  The smaller camera Haldane carries may have been for postcard-size photographs.
<a href="//commons.wikimedia.org/wiki/User:Dankarl" title="User:Dankarl">Dankarl</a>
2012-01-22, original late 1890s or early 1900s.
<span class="int-own-work" lang="en">Own work</span>