£25 Bay State Read, Boston, Massachusetts, Dec, 20, 1934 
E # Leitz, Inc., 60 East 10th Street, Hew York, 
Gentlemens 
In Leica Photography,no* 19, p. 6, there is 
an article entitled tt 331ements" "by Dr, H. 0, Barnes. Does 
honorable photographic department recommend the elements 
set forth by Dr, Bernes, If the Summar lens is set for 
20 feet will everything from 12 feet to infinity be in 
focus when in the late afternoon the f,4,5 stop is used? 
mil everything between 12 feet and infinity be in focus 
if the f,9 stop is used with the focusing scale set at 
<t0 feet/ '.ould it be wise to set the shutter speed at 
1/100 sec, with any type of film? 
If the Summar lens is set at 30 feet and an f.9 
stop used, will everything be in sharp focus from 12 feet 
to infinity? 
How does the Summer lens compare with the Elmar 
5 cm, lens with regard to infinity near point? 
Very truly yours. 
