We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
212 Transactions of S.M.P.E., May 192/+
distance for the camera we can save in the area covered by the studio. On the other hand we do not need larger settings when they are not desired, because by placing the camera nearer to the scene than would be possible with an ordinary camera, we can limit the field at will. Beside we can always mat the frame down to any width and therefore any desired angle.
Another point that has been raised is the effect of the swinging motion of the objective on the sharpness of the picture, because of reduced time of exposure. This, together with the other objection frequently heard about distortions resulting from the fact that we project a flat positive, whereas the corresponding negative was curved, can best be answered by actually viewing the pictures already taken.
It is but fair to here state that the pictures you will see were taken with the experimental camera that Mr. Alberini himself built, and which I will show you later. I do not want to detract from the mechanical skill and ingenuity of Mr. Alberini, but, as a mechanical engineer, I have to say that many features can be improved upon.
Mr. Alberini has used an asymmetrical objective lens because a symmetrical one of 35 millimeter focal length was not to be found in the market. As the drum which carries the objective has a continuous and uniform rotating motion, and as we can only take a picture for each revolution on account of the objective being asymmetrical, we had to provide for a shutter to intercept the light during one half of the revolution.
I am assured that a symmetrical lens of 35 millimeter focal length covering the height of our negative frame and having a speed comparable to that of an asymmetrical lens can be built. In this case both ends of the objective will become ''business" ends and two pictures will be taken for each revolution, cutting down the speed of rotation of the drum by half.
I do not claim to offer to the Motion Picture Industry the last word in the technique of panoramic motion pictures, but believe that Mr. Alberini has started in the right direction towards the goal for better pictures.
As for the projecting side of the new system, I want to make it clear that no trouble will be experienced on account of the frame having less height. Instead of a frame line the positive will have an opaque space below and above the frame so that it will not show on the screen and this screen can be used for projecting the ordinary positive film. I want also to make it clear that the height of the panoramic positive frame depends entirely on the angle it is desired to include. The greater the angle the less the height of the frame, because, no matter how wide the negative is, its width has always to be reduced by photographic process to the standard width of the positive frame, and the height will be reduced proportionately.