He always could buy another camera; he could not again carry a white orchid, plucked in the heart of the tropics on the night peace was declared, to the girl he left behind him. Followed by El Capitan, nosing and snuffing gratefully at the cool waters, he waded the ford, and with his camera case swinging from his shoulder, galloped up the opposite bank and back into the trail.英文原著 · 《A Charmed Life》
If practicable, it is most expedient that the plate be submitted to the action of mercury immediately on coming from the camera. I have frequently, however, carried plates for miles in the plate-holders and after exposing in the camera, brought them back to expose to mercury, and obtained fair proofs; but for the reason before given, it is advisable to carry along the bath, and bring out the impression on the spot.英文原著 · 《American Hand Book of the Daguerreotype》
"At the earliest period of the employment of the camera obscura, a double-convex lens was used to produce the image; but this form was soon abandoned, on account of the spherical aberration so caused. Lenses for the photographic camera are now always ground of a concavo-convex form,英文原著 · 《American Hand Book of the Daguerreotype》
Soliel has proposed the use of the chloride of silver to determine the time required to produce a good impression on the iodated plate in the camera. His method is to fix at the bottom of a tube, blackened within, a piece of card, on which chloride of silver, mixed with gum or dextrine, is spread. The tube thus disposed is turned from the side of the object of which we wish to take the image, and the time that the chloride of silver takes to become of a greyish slate color will be the time required for the light of the camera to produce a good effect on the iodated silver.英文原著 · 《American Hand Book of the Daguerreotype》
Keep the camera and mercury-bath perfectly free from the vapors of iodine and bromine; for the presence of the slightest degree of either of the above will injure the impression in no small degree. As a preventive, let the camera be exposed to the sun or fire for a few minutes in the morning.英文原著 · 《American Hand Book of the Daguerreotype》
A white back-ground is generally employed, the object being to blur the lower portion of the plate, leaving the head of the subject in relief. Every Daguerreotypist is familiar with the fact that a motion of any body between the camera and the sitter will cause a "blur." Cut a piece of thin paper and scallop it, making a semicircle. This is kept straight by means of a wire frame, and it is to be moved in front of the lower part of the body of the sitter during the time of exposure of the plate in the camera. Develop over mercury as usual, and the result will be a crayon Daguerreotype.英文原著 · 《American Hand Book of the Daguerreotype》
We're still short two cameras. We need to cut that sequence down-- We're not cutting. I'll get those cameras. Set up for rehearsals.电影 · 《The Aviator (2004)》