Incident light reading
A measurement, by light meter, of the amount of incident light falling upon a subject. The light meter is placed close to the subject, pointing towards the main light source.
Search SWPP and BPPA ...
is light coming from a light source that falls directly on a subject and provides sufficient illumination to view it.
incident light meter: An incident light meter can help in difficult lighting situations. Incident light meters measure the light falling on the subject as opposed to the light reflected from it.
Most handheld meters also sport a plastic, white hemispherical dome. Thisreads light falling on the subject, or . Thedome reads light gathered from an area covering 180º.
Incident Light Meters
Place the handheld meter in front of the object to be photographed. Press a button in the center of the meter and read the suggested settings displayed on the LCD screen.
The light actually falling on a subject, which may not be the same as the amount of light being reflected by the subject. Light falling on a surface as opposed to the light reflected by it.
Incident light reading
Measurement, of the amount of incident light falling upon a subject. The meter is placed close to the subject, pointing toward the light.
(see Meter) ...
Light falling on a surface as opposed to the light reflected by it.
Incident light attachment. Diffusing disc or dome (usually of white plastic) placed over the cell of a hand-held exposure meter to make readings towards the light source. Calculator dial is then used in the normal way.
A meter designed to read . Compensation is needed for unusually dark or light subjects, Back Light, silhouettes, and special Exposure effects. The tool for measuring Lighting Ratio.
INCIDENT LIGHT METER - An exposure meter (generally hand held as opposed to a reflective meter that is built into a camera) that reads the amount of incident light.
- attachment - accessory for a hand held exposure meter which allows it to give readings. Many models come with this accessory permanently attached.
Incident light meters work best when you are willing to average the exposure over the whole scene. Incident meters are most effective when the light source is shinning on you subject from nearly straight in front of your subject and not from the side.
Scenes with high variation in reflectivity, such as those containing black objects in addition to strong reflections, may actually have a greater dynamic range than scenes with large variation.
When using an incident light meter, the most important source of error of which the photographer must be aware occurs when the light is highly directional.
Whenever the light source has a 90-degree relationship with the camera, the on the subject is called side lighting. In side lighting situations, part of the subject is in shadow.
Well it is possible to measure this way - it's called an incident light reading, instead of the reflected light reading your camera measures.
As a rule, the best way to measure is to stand beside the subject and point the white dome towards the camera. This gives a good overall exposure.
To capture the reflection image, this method illuminates a wafer on a tilted wafer chuck in order to make the incident light angle and the reflection light angle equal. This reflection light is effective for detecting coating errors.
The sensor is on the front behind a white dome, and it measures the light falling on the meter.
I still had to deal with the in-camera meter, which measures the reflected, not incident light, then come up with some compensation factor if I didn't want to resort to using an external incident meter, which is highly recommended.
Although artificial room lighting (such as table or floor lamps) is intended to illuminate the room in such a way that the "" bathes the entire environment equally, this is simply not the case.
ANGLE OF INCIDENCE - Light striking a surface is called 'incident light.' It becomes 'reflected light' when it reflects from the surface.
The recorded hologram is now a three dimensional structure, and it can be shown that is diffracted by the grating only at a particular angle, known as the Bragg angle.
Altitude and ultra-violet rays can adversely affect exposures, particularly when measuring incident light with a handheld device. Bracket more widely than normal. A sturdy carbon-fibre tripod is essential.
Better than the gray card, the ExpoDisc Professional Digital White Balance Filter sits in front of your lens and looks similar to the dome on an meter. It is available in different sizes.
Those cards are designed to reflect 18% of the incident light. So, if you point your camera at one of those cards and force you camera to use the exposure it finds for that card, ...
Not only does the Gossen Digisix measure an extremely wide range of light, it measures both reflected and with the sliding dome, and also has a thermometer with min/max memory for documenting film storage safety, a clock, ...
If you don't have an incident light meter or a gray card, then take a reading with your built-in meter...and bracket! ...
Transmissive light filters (e.g. colored patches of glass or plastic) stop some of the wavelengths from the , only letting trough a limited range of colors.
IF (Internal Focusing) System Image Image Editor Image Plane Image Resolution Incident Light Infinity Infrared Infrared Compensation Index Inkjet Inverse Square Law IR Setting ISO
Reflectance (of a surface) The proportion of the surface reflects. (See spectral reflectance).
Primary Mirror The first mirror encountered by incident light in a telescope system. Prime Focus (PF) a) The focal point of the large primary reflecting mirror in astronomical telescopes when the light source is extremely distant.
See also: Light, Photograph, Image, Camera, Photography