THE BIRD PHOTOGRAPHER'S OUTFIT tii 
by five inches, which will also be found to be large 
enough for the portrayal of nests and eggs. 
The 4 x 5 also reduces proportionately in making 
lantern slides, and if the picture is made the long 
way of the plate—that is, higher than broad—it can 
be easily adapted for illustrative purposes in duo- 
decimo or octavo books. When a larger picture is 
desired it can readily be made by enlargement, an 
increase in size of three diameters, or six times the 
area, being possible from a sharp negative without 
undue loss of definition. 
For use from a tripod any one of the several ex- 
cellent long-focus cameras now on the market will 
be found to answer every requirement. If it is pro- 
posed to employ a telephoto lens, care should be 
taken to select the camera combining greatest bel- 
lows length with rigidity. A reversible back in- 
creases the size somewhat but adds to the length of 
bellows, and will be found serviceable in the many 
awkward situations in which the bird photographer 
is often placed by the nature of his subjects. 
The Kearton brothers have an “ adjustable min- 
iature” on the top of their camera, which they state 
“is used as a sort of view finder when making studies 
of flying birds. When fixed in position and its 
focus has been set exactly like its working com- 
panion beneath it, both are racked out in the same 
ratio by the screw dominating the larger appa- 
ratus.”* The purposes of this attachment, however, 
* From Wild Life at Home, how to Study and Photograph It, 
by R. Kearton, illustrated by C. Kearton; a work of the utmost 
interest to the animal photographer, who should also read With 
Nature and a Camera, by the same authors (Cassell & Co.). 
