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42 Transactions of S.Bl.P.E., Vol XIIJ, No. 37, 1929
black on each. side. I don't think it is a. function of this committee to state whether they should be clear or black.
Mr. Jones: We are simply defining dimensions; we are not standardizing whether it should be black or white.
Mr. Taylor: Mr. Jones has stated that this relates to the sound track, and yet the title relates to the aperture. That was not my principal point. As I recall the wording, it speaks of the emulsion to face and looking at it in a certain way. I have heard a group of men discussing these matters for hours, and I think you can definitely and simply state this so that there will be better understanding if you say the sound track is at the left of the picture. This tells the camera man he will lose from the left and not from the right, which is very important. In special camera work, it tells the man where to put in an aperture, and in designing printers and everything you tie to a particular side of the picture. I think that while this may appear trivial in the use of words, it is very important. Who knows whether you will have emulsion on both sides or a reversal process with the emulsion on the other side. The simple thing is to say that the sound track is on the left side of the picture. The picture is the negative when you look at it, so that you see a picture and not a reversal picture. On the screen you look at the picture and the sound track is on the left side, and the man putting up the screen and everyone else is interested in it, and a great deal of money has been spent on this.
Dr. Mackenzie: I think that is exactly pertinent. I think Mr. Taylor is stating the rules he has to remember. This is for the guidance of the people who are printing it.
Mr. Taylor: I am not making a recommendation for one man alone. It is for everybody, and I think I have shown you have not defined this fully. When you talk about the emulsion side, suppose some one wants to make 35 mm. negative and develop it to a positive; it isn't a picture, it is a negative.
Dr. Mees: Would the committee insert after their statement the words ''that is, on the left side of the picture?"
Mr. Taylor: Is this for the benefit of one particular group or for the whole industry?
Mr. Jones: The Chairman has no objection to that phrase, is there any member of the committee present who objects? Apparently, the committee accepts.