THE BIRD PHOTOGRAPHER'S OUTFIT 



15 



to F. 4 of the eight-inch) ; third, 6 telephoto attach- 

 ment with eight-inch lens, tweiity-one-inch bellows, 

 stop F. 8 of the eight-inch, time one second. Com- 

 menting on the results of these tests it may first be 



3. The bird in Test No. 1 enlarged about three diameters. 



mentioned that in the " Unicum " shutter employed 

 exposures of a so-called " T " and "-fa" seconds gave 

 exactly the same results both with the combined 

 eight-inch lens and the front fourteen-inch lens ; the 

 actual time, however, was doubtless not far from ^ 

 of a second. The negatives, therefore, show, in the 

 first place, that the long-focus lens is capable of 

 doing fairly rapid work. Continuing our compari- 



