A method for determining a level of solar radiation at a point of interest (POI). Multiple sky images are captured by a distributed network of digital cameras. Sun location parameters are determined. A three-dimensional (3D) sky model is generated based on the sky images. Generating the 3D sky model includes generating 3D object data based on the sky images to model one or more objects in a region of sky, and generating position data to model a position of the one or more objects in the region of sky. A level of solar radiation at the POI is determined based on the position data and 3D object data of the 3D sky model and the sun location parameters.

To provide a device, system, and program with which it is possible for photometric information or colorimetric information corresponding to an international industry standard to be accurately measured in a simple manner. In one embodiment, a measurement apparatus (1) includes: an imaging unit (11) that acquires image data of an image; converters (141, 142) that use image data shooting information to convert the image data into data including photometric information or colorimetric information; and an output unit (16) that outputs the photometric information or the colorimetric information obtained by the converters.

An apparatus for the creation of works having the same creative look and feel as works filmed via the original Technicolor three-strip filming process comprising: a camera, a lens mounted on said camera, a step-up, lens-filter adapter ring mounted on said lens of said camera, a diffusion filter mounted on said step-up, lens-filter adapter ring, said diffusion filter capable of mimicking the effect of traditional silver nitrate film used in the Technicolor process, and an optical band-stop filter mounted on said the diffusion filter, said optical band-stop filter capable of preventing the transmission of light having a 570-600 nm wavelength and permitting no more than 20% light from being transmitted through it. A wide angle dispersing light fixture comprising a clear bowl-shaped outer housing having an inner surface, and an outer surface mirrorized with RUSTOLEUM MIRROR EFFECT, silver, SKU NO. 26772, and a candelabra style fixture capable of receiving a multiplicity of light bulbs, said light bulbs being Hypericon A21 LED BULBS having an extended CRI of 94 or higher, and capable of providing R-9 and an unbroken spectrum of light capable of working in daylight balance between 4800 and 5600 kelvin. A chromatic exposure meter comprising an eyecup and a spectroscope having multiple glass-prisms, a nanometer scale and a control that can open and close the iris/slit to change the amount of light that enters the spectroscope, said spectroscope further uprising an ISO Wheel having a scale for 12, 25, 50, 100, 200, 400, 800, 1600, 3200, and 6400, a free-moving Shutter Speed Wheel equipped with a Shutter Speed scale of 1/800, 1/400, 1/200, 1/100, 1/50, 1/25, 1/12, , , and 1/1.6 of a second, a free moving F-Stop Wheel equipped with an f-stop scale of 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, and 32 and a Rainbow Calibrator scale, and a fixed Foot Candle Wheel correlating to the Iris-loot Candle Measure, and equipped with a scale of 3, 6, 12, 25, 50, 100, 200, 400, 800, 1600, 3200, and 6400-foot candles.

An image pickup apparatus capable of reducing influence of flicker while suppressing delay of start of photographing. An image pickup device and a photometric sensor pick up images of an object. A CPU obtains images by controlling driving of one of the device and the sensor to perform charge accumulation and charge readout. Further, the CPU detects a flicker frequency and a flicker phase of a flicker light source, and stores them in a memory as first information. When photographing, if the CPU determines that the first information is not valid, an ICPU obtains images by controlling driving of the other of them to perform charge accumulation and charge readout. Further, the ICPU detects the flicker frequency and the flicker phase and stores them in a memory as second information. The CPU controls exposure timing according to the second information to perform photographing.

An imaging device includes an exposure control unit, a determination unit, and an illuminance calculation unit. The exposure control unit is configured to control a plurality of exposure times. The determination unit is configured to determine whether or not saturation occurs using at least one data item of a plurality of data items obtained during the plurality of exposure times. The illuminance calculation unit is configured to calculate, if the determination unit determines that the saturation occurs, an illuminance using a data item different from the at least one data item used in the determination.

An imaging device includes an exposure control unit, a determination unit, and an illuminance calculation unit. The exposure control unit is configured to control a plurality of exposure times. The determination unit is configured to determine whether or not saturation occurs using at least one data item of a plurality of data items obtained during the plurality of exposure times. The illuminance calculation unit is configured to calculate, if the determination unit determines that the saturation occurs, an illuminance using a data item different from the at least one data item used in the determination.

An image pickup apparatus capable of reducing influence of flicker while suppressing delay of start of photographing. An image pickup device and a photometric sensor pick up images of an object. A CPU obtains images by controlling driving of one of the device and the sensor to perform charge accumulation and charge readout. Further, the CPU detects a flicker frequency and a flicker phase of a flicker light source, and stores them in a memory as first information. When photographing, if the CPU determines that the first information is not valid, an ICPU obtains images by controlling driving of the other of them to perform charge accumulation and charge readout. Further, the ICPU detects the flicker frequency and the flicker phase and stores them in a memory as second information. The CPU controls exposure timing according to the second information to perform photographing.

An image pickup apparatus capable of reducing influence of flicker while suppressing delay of start of photographing. An image pickup device and a photometric sensor pick up images of an object. A CPU obtains images by controlling driving of one of the device and the sensor to perform charge accumulation and charge readout. Further, the CPU detects a flicker frequency and a flicker phase of a flicker light source, and stores them in a memory as first information. When photographing, if the CPU determines that the first information is not valid, an ICPU obtains images by controlling driving of the other of them to perform charge accumulation and charge readout. Further, the ICPU detects the flicker frequency and the flicker phase and stores them in a memory as second information. The CPU controls exposure timing according to the second information to perform photographing.