90 PHOTOGRAPHY FOR BIRD-LOVERS. 



gained in the summer with due caution, for even 

 on a bright winter's day the actinic value of the 

 light is small, and under-exposure is too often 

 evident in work in this direction. A very definite 

 and easily recognizable centre of sharp focus, so 

 that one can instantly see when the bird is in the 

 anticipated position, and a large working aperture 

 in the lens are, therefore, much to be preferred to a 

 more extensive field of focus and the small stop 

 by it dictated. 



I would specially recommend this branch of 

 bird- work, for besides embracing not a little of the 

 pleasure and excitement of trapping, it has the 

 peculiar merit of making it possible to secure 

 pictures of birds which do not breed within our 

 islands, visiting us only during the winter months, 

 and our sphere of action is thereby materially 

 extended. 



