ENLARGING ON BROMIDE PAPER WITH THE KODAK.
Most amateurs are aware that beautiful enlargements of almost any size can be made from Kodak or any small negatives, but are possessed of the idea that the process of enlarging is intricate and requires a great deaf of apparatus and technical skill. As a matter of fael 'the making of an en largement is simple and requires prae-tically no apparatus beyond the Kodak.
In the following pages we clearly describe the chara&eristics and uses of bromide papers and demonstrate how the Kodak and many of the other hand cameras may be utilized for the making of enlargements. No attempt is made to describe the more intricate and costly apparatus demanded by the professional, but we confine ourselves to the demands of the average amateur.
Bromide paper is a pure photographic paper coated with a sensitive compound composed principally of pure bromide of silver and white gela tine and similar to the emulsion of the ordinary dry plate or film, only of much less rapidity, permitting manipulation by a stronger light than would be safe for plates.
Bromide of silver gives a pure black tone when exposed to the light and then developed, the unexposed portions of the paper coated with this emulsion remains perfeelly white except with Royal bromide paper which is coated on a delicate cream stock.
If the beginner will consider the sheet of bromide paper as praelically the same as a slow dry plate, and that a positive image is produced by pho tographing through the negative on to the sheet of bromide paper with the negative and sheet of paper some distance apart instead of in contael as in making an ordinary print, a clearer understanding of the process will be afforded.
Bromide paper has remarkable keeping qualities both before and after exposure, and the developed print when carefully fixed and washed is as permanent as the paper support itself.
An enlargement, in the usual sense, is a positive image or pielure ob tained by permitting rays of light to pass through a negative, then through a lens and focusing on a sheet of sensitive bromide paper ; the size of the projected image depending upon the distance between lens and paper, the further the paper is from the lens the greater the enlargement, which will be readily understood by reference to diagram below.
An enlarged negative can also be made in the same manner by using a small positive, the projeeled image focusing on a dry plate instead of on bromide paper.