Lens:

f10, 12" Dallmeyer Rapid Landscape L.F. No. 2. Iris diaphragm to f45 with external pointer. Serial no. 67796 (c. 1906).

Shutter:

Focal-plane, speeds 1/200 - 1/1000. Speed varied by spring tension. Provision to change the slit width but not calibrated. Separate slit for focusing. For slow speeds the lens cap or a front-of-lens roller-blind would have been used.

Construction:

Mahogany, finger joints. Mauve square cornered bellows.

Format:

6 ½" x 4 ¾" plates held in double dark-slides.

Focusing:

Bellows to 50". Two positions for front standard. Rack and pinion (diagonal cut) movement to inner frame.

Attributes:

Reversing back. Tripod socket. T.T.H. lens flange with patent start to thread.

Movements:

Limited rising front. Tilting back, tilting front.

With:

Focusing screen.