Abstract: When a stop aperture formed by a shutter blade has reached a diameter corresponding to a predetermined f-number, a flash light is emitted and an exposure is performed with the flash light. Successively, the diameter of the stop aperture is gradually increased. When the stop aperture has reached a diameter corresponding to a set f-number, a color-temperature conversion filter is placed at a photographic optical path. Another exposure is performed with an illumination light which has passed through the color-temperature conversion filter.

Abstract: When a stop aperture formed by a shutter blade has reached a diameter corresponding to a predetermined f-number, a flash light is emitted and an exposure is performed with the flash light. Successively, the diameter of the stop aperture is gradually increased. When the stop aperture has reached a diameter corresponding to a set f-number, a color-temperature conversion filter is placed at a photographic optical path. Another exposure is performed with an illumination light which has passed through the color-temperature conversion filter.

Abstract: A camera uses a program shutter as a shutter device. When an exposure value becomes larger than EV9, a stop of the camera is closed down so as to increase an f-number. In a case that the camera is loaded with a photographic film having film sensitivity of ISO 1000 or more, an upper limit of a focus set position of a taking lens is fixed to 3 m. By utilizing a depth of field, a picture is taken in a state that a blur is reduced, relative to a subject existing within a range from a comparatively short photographic-distance to a far photographic-distance.

Abstract: A lens-equipped film unit comprises a photographing mechanism including a photographic lens, a shutter of a fixed speed, an aperture and a strobe, and an unexposed photographic film has being charged therein. The photographing mechanism satisfying the relationship: 7.0≦log2(G2)+log2(1/T)≦12.5, wherein T represents shutter speed (sec) of the shutter and G represents guide number (ISO 100.m) of the strobe. The film unit further comprises a photometer to measure a subject light quantity and to output light quantity signal corresponding to the subject light quantity, and an exposure quantity controller toward the charged photographic film in accordance with the light quantity signal.

Abstract: A lens-fitted photo film unit for photographing an object includes a flash charger button as mode selector, which designates a selected one of a flashless mode and a flashing mode. An exposure aperture forms a color image by object light from the object. The image, if the flashless mode is designated, is recorded with first color balance in the exposure aperture, and if the flashing mode is designated, is recorded with second color balance. An electronic flash unit applies flash light to the object. A light balancing filter as color balance adjustor subjects the object light to correction if the flashless mode is designated, so as to set the first and second color balance substantially equal to one another.

Abstract: A lens-fitted photo film unit can take indoor- and night-photographs at adequate tone- and color-reproductions, by satisfying the condition: −6≦2log2(A)+log2(1/T)−log2(0.3·S)≦5 wherein T, A and S represents the shutter speed, the aperture size, and the ISO film speed. The film speed is determined to be not less than ISO640, and more preferably not less than ISO1000. The guide number (ISO100·m) of a flash device of the film unit is set to be in a range from 0.1 to 8, more preferably from 1 to 6, and most preferably from 3 to 5, and satisfies the condition: 8.0≦log2 (G2)+log2 (1/T)≦12.0, in combination with the shutter speed T.

Abstract: A silver halide emulsion in which in silver halide tabular grains having dislocation lines in a peripheral portion of a grain, no reduction sensitization is essentially performed before introduction of dislocation lines is started and reduction sensitization is performed after introduction of dislocation lines is started and before grain formation is completed, or a silver halide emulsion in which grain formation is performed in a silver nucleus stabilizing ambience and reduction sensitization is performed in the silver nucleus stabilizing ambience, and a silver halide photographic light-sensitive material using this emulsion.

Abstract: A silver halide emulsion in which in silver halide tabular grains having dislocation lines in a peripheral portion of a grain, no reduction sensitization is essentially performed before introduction of dislocation lines is started and reduction sensitization is performed after introduction of dislocation lines is started and before grain formation is completed, or a silver halide emulsion in which grain formation is performed in a silver nucleus stabilizing ambience and reduction sensitization is performed in the silver nucleus stabilizing ambience, and a silver halide photographic light-sensitive material using this emulsion.

Abstract: Disclosed is a silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer comprising a substantially surface-latent-image-type silver halide emulsion which comprises hole-injection-type sensitizing dye(s) in an amount of 4.times.10.sup.-4 mol or more per mol of silver in the emulsion and further comprises supersensitizing compound(s), wherein the hole-injection-type sensitizing dye and the supersensitizing compound satisfy the requirements defined herein. The photographic material, thus comprising at least one silver halide emulsion that has been spectrally sensitized with a large amount of sensitizing dyes in a wavelength range longer than 545 nm and has been further sensitized by reduction sensitization, has a much increased sensitivity, while being fogged poorly, and has excellent storage stability.

Abstract: A silver halide photographic light-sensitive material has at least one silver halide emulsion layer on a support, and contains an imidazole compound. The silver halide emulsion layer contains substantially perfect cubic grains.

Abstract: A silver halid photographic emulsion contains an antioxidizing agent.

Abstract: A silver halide emulsion comprises at least one dispersion medium and silver halide grains having a silver iodide content of less than 5 mol %. At least 5% by number of the silver halide grains have at least one intrafacial epitaxy limited in the neighborhood of the corners of a major plane of the grain, and the thickness of the epitaxy is 0.1 .mu.m or less. A silver halide photographic light-sensitive material having at least one silver halide emulsion layer on a support, wherein this emulsion layer comprises the above emulsion, is also disclosed.

Abstract: A silver halide photographic light-sensitive material has at least one silver halide emulsion layer on a support. The silver halide emulsion layer contains a silver halide emulsion in which 50% or more of the projected area or the number of all silver halide grains are occupied by substantially perfect cubic silver halide grains, which are silver bromochloroiodide or silver bromoiodide grains having a silver iodide content of 0.5 mol % or more and a silver chloride content of 3 mol % or less and are spectrally sensitized with sensitizing dyes.

Abstract: A silver halide photographic emulsion comprises silver halide grains to which an iridium compound was added during a preparation process. At least 5% by number of said silver halide grains have at least one intrafacial epitaxy limited in the neighborhood of the corners of a major plane of the grain, and the thickness of said epitaxy is 0.1 .mu.m or less.

Abstract: A rotor for a superconducting electric rotary machine comprises a coil supporting tube, a superconducting wire constituting a superconducting field coil, in-line insulators disposed between the laterally adjacent lines of the wound wire and layer insulators between the vertically adjacent layers of the wound wire of the coil, wherein at least one of the line insulators and the layer insulators is formed by a grooved insulating material or a perforated insulating material.

Abstract: In large capacity and superconducting rotating electric machines, the stator coil windings are frequently placed in the air gap between the stator core and the rotor. This so-called air gap winding rotating electric machine has the drawback that reliably securing the stator coils to the stator core is difficult. In the air gap winding rotating electric machine according to the present invention, the stator coils are disposed between the outer circumference of a thin-walled electrically insulating cylinder surrounding the rotor and the inner circumference of the magnetic shield on the stator side. Taper keys are inserted between the outer circumference of the stator coils and the inner circumference of the magnetic shield so as to firmly press the stator coils against the thin-walled electrically insulating cylinder. In this manner, the stator coils can be easily and reliably secured to the stator.