256 HILLSIDE, ROCK, AND DALE 



lens for such work. Mine is the Goerz Double 

 Anastigmat working at F 4, undoubtedly the best 

 lens for Nature and other photography, owing to its 

 extreme rapidity and covering power. For photo- 



graphing birds in the 

 ordinary way, and where 

 there is a good light, 



I have used the back 

 : ' combination of the 



Goerz Double Anas- 

 tigmat, Series III., 

 F6-8. At full aperture 

 splendid definition is 

 given ; many of the 

 photographs I took on 

 the Fame Islands were 

 taken in this way. A 

 fairly rapid exposure 

 should be given when 

 using electricity, as 

 the bird often releases 

 the shutter at the 

 moment of alighting, 



and is therefore moving its wings. i-2OOth of a 

 second is quick enough for almost any bird, but 

 sometimes, if the wires are carefully arranged, it is 

 quite possible to give an exposure as slow as i-i5th 

 of a second. The only silent shutter for rapid work 



STARLING 



