A little point here may be of interest. If you are using a blow-lamp to make a picture with people included, it is best to start the lamp, that is, to blow the lamp before you take the cap off your camera or open the shutter. When the flash first starts, one is naturally inclined to jump a little, and starting the flare before opening up the lens accustoms the workmen to the strong light.
If it is necessary to make an open flash in a windy place, I cover my flash pan, after loading, with tissue paper, which prevents the powder from escaping, and does not interfere with the flash when it explodes.
When including life in a home picture, and smoke is particularly objec tionable and electric lights possibly impractical, a good flash machine comes in handy, that is, such a machine as the Halldorson, or similar outfits whereby smoke is eliminated and perfect control of the light is had.
In photographing long corridors, which are nearly always dark at the far end and may have a spotted illumination, a succession of small flashes along the line, concealed from the camera itself, by working in doorways and behind columns, is a very nice way to get these. Electric lights may also be used to advantage by placing them behind the columns or in the doorways for short spaces of time during the exposure.
Illustration Number 9 is an interior of a hotel dining-room ; the walls were yellow, the carpet buff and blue, and the curtains blue. As the customer wanted
the color values preserved, the exposure was made on a panchromatic plate, using daylight coming in at the windows, which was balanced up to avoid hala tion with two electric lamps with diffusers attached, stationed on the camera side. The exposure was ten minutes, stopped to f32.
Number 10 was made almost entirely with electric lamps, which were not moved during the exposure, and which gave the heavy shadows under the chairs. This was made on a panchromatic plate; the time was two minutes, stopped to f32.
Number-11 is the .interior view of a milk condensory, which shows the effect of combating strong light and at the same time getting good detail all through the picture. The exposure was about one minute, and portrait film was used.
Number 12 is a photograph made for a show case company of their instal lations, and electric lights were used entirely. The exposure was about three minutes, with a Bausch & Lomb Series IV lens, stopped to f32, and a backed Standard Orthonon plate was used.
Illustration Number 13 is an interior made with electric lights with dif fuser attached, portrait film being used, and exposure was about five seconds.