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FASTEST LENS IN THE WORLD .'
44% FASTER THAN /1.8
FORMULA
OF
DR. RUDOLPH
MOST
SCIENTIFICALLY
CORRECTED
WHAT IS IMPOSSIBLE WITH OTHER LENSES
Indoor pictures without artificial light.
Pictures under unfavorable lighting conditions.
Night Shots.
CAN BE ACCOMPLISHED WITH THE PLASMAT F 1.5
Focal lengths 20 mm. to 3J/2 *n-j can be mounted to most any camera.
1 inch in focusing mount for FILMO $54.00.
See your dealer or write us.
HUGO MEYER & CO., INC., 105 W. 40th St., NEW YORK
Factory Goerlitz, Germany
AT T ASTM
xjl jl JL/ r\ \j jl ♦ ♦
A MARVELOUS NEW FIELD
FOR AMATEUR MOVIES
Tk„
*=>
V
"Nite-Sun" Flare
For Taking Night Exteriors
A FTER Seven Months of Continuous
Experimenting The World's Leading
Manufacturers Of Flares Have Developed
The "NITE-SUN'' FLARE For Use By
O
Amateurs For Beautiful Night Photo
graphy. Or For Whenever Light Conditions Are Unfavorable. Our Professional
Flares Are Used Throughout The World
0
By Motion Picture Companies For Night And Other Difficult Scenes. YOU Can Now Get These Same Wonderful Effects With Amateur Cameras And "NITESUN" FLARES.
PRICES
Dozen Each
Half Minute $6.00 .60
One Minute 10.00 1.00
One and One-Half Minute.. 15.00 1.50 Two Minute 20.00 2.00
Stands Each $6.00
WRITE FOR FREE BOOKLET
/ V
Outlining These Fascinating New Opportunities
/
Dealers Write For Particulars
L C.NEWMAN CO., Inc.
320 BROADWAY NEW YORK, N. Y.
THE MOVIE AS TENNIS MENTOR
{Continued from page 12)
service, or stroke. This is accomplished by having the racquet, in the course of its swing, leave behind it a sharply dotted line. At the end of such a stroke, the progress of the racquet is shown as long as the entire picture remains on the screen.
It is remarkable, in viewing these pictures, to note the widely varying twists, sweeps and finishes of the strokes as played by the different tennis experts filmed. The suspended action portion of the film work brings to a halt upon the screen the player in various positions of action. It is possible to do this in the laboratory by taking the cut desired and repeating it fifteen or more times. This gives time for the student to see the advantages of certain positions of the hand, or of the feet, or methods of holding the body while receiving or returning the ball into play.
While neither suspended action nor line analysis had ever been shown before in connection with tennis movies, it has been in use for over a year in various lines of scientific study and practice, particularly in medicine and surgery. In these fields it may easily be seen to what good use they can be put. For the beginner in the game of tennis, however, they are an invaluable aid in learning correctly the fundamentals of the sport. As is the case in the majority of the lines of athletic endeavor, the game begins, to paraphrase an old expression, at home, usually under the doubtful tutelage of the sand lot, or the older brother. This often explains the dub in sport activities. Now, however, with line analysis and the suspended animation features added to pictures, the serious pupil can see the correct way of doing things, and correct his errors.
The Lawn Tennis Association is convinced that the films, although the cost was large, represent one of the best investments ever made by the Association. Already from all parts of the country, testimonials are being received at its executive offices from colleges, whose grateful coaches are singing the praises of the films for having ironed out the mistakes of their team players. From other colleges come letters stating that not merely have the members of the team profited by the viewing of the films, but that they have stimulated interest in the sport, and inquiries have been made by the non-playing students as to the correct way of laying
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