OCR Text |
Show ITEMS OF PHOTOGRAPHY. A very convenient and easy method of making mak-ing lantern slides from the No. !i Kodak dim is by contact printing. The largest size of the standard map will be just inclosed by the circle of the negative. An English Arm have introduced an automatic auto-matic repeating shutter, which may have some advantages. Instead of having to "set" each time, tho shutter is ever in position to respond to a pressure upon the pneumatic bulb. Here is an excellent method for intensifying intensify-ing gelatine films: Immerse in a half saturated solution of ammonia; wash, and then plnngo it for a second in a solution of one part cadmium cad-mium bromide and 1 ,000 parts alcohol. This gives a pure and iutonss black negative. It may be interesting to those who use magnesium powder for photographic purposes pur-poses to know that tho metal is sometimes adulterated with zinc filings. Forewarned is forearmed, and it may be well to exercise care as to the source of supply, for the purity of the illuminating material Is of the utmost importance. An Euglisb photographer claims to have obtained a photograph in which the uatural colors were reproduced when the exposure was made, by accident, just at the moment when there came a blinding flash of lightning. light-ning. He says that a ftiend of his once got colored plate under similar circumstances, and believes that electricity hot to do, with photographing colors. |