Richardson's handbook of projection (1930)

Record Details:

Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




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.

MANAGERS AND PROJECTIONISTS 1225 as extreme, except for very long projection distances. Many advocate as much as four to four feet six inches, which is all right on long projection distances, but too much unless the distance be at least in excess of one hundred feet. That is a matter for very careful consideration. Before deciding, the architect should lay out the light beam at various spacing distances and ascertain exactly what the distortion will be. The spacing should be as much as can be had without objectionable distortion, up to five feet, but before deciding on maximum distances it will be well that the lens maker be consulted as to whether the lenses will have sufficient depth of focus to take care of the situation. On the whole, I believe this whole subject may best be dealt with by quoting the report made by the Projection Committee of the Society of Motion Picture Engineers, made at its 1929 spring meeting. It covers the subject of the projection room with fair completeness as to the fundamental requirements of an acceptable room.