C-W (Center-Weighted) Fill-Flash
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Center-Weighted Average Metering
Center-weighted average metering gives special emphasis to the center of the frame, but also covers the surrounding area.
Center-Weighted Fill-Flash A fill-flash technique that uses the camera's center-weighted meter for ambient light exposure measurement, and uses center-weighted flash metering.
Center-weighted Average
An automatic exposure metering mode that measures the exposure throughout the image field, and finds an average value, but incorporates more weight from the center of the frame to determine the final exposure value.
Center-weighted meter. A through-the-lens exposure meter that measures light values from the entire scene but gives greater emphasis to those in the center of the image area.
Center-weighted metering is a type of "averaging" meter where the entire viewfinder image is metered but the reading area is "weighted" to give more emphasis to an area at the center of the frame.
Center-weighted metering
The camera uses the entire frame for light measurement but assigns a greater weight to an area in the center of the frame (by default an 8 mm circle indicated on the viewfinder focus screen).
Center-Weighted - A term used to describe an auto exposure system that uses the center portion of the image to adjust the overall exposure value. See also "Spot Metering" and "Matrix metering"
CF - see CompactFlash ...
Center-weighted metering. A light-measuring device that emphasizes the area in the middle of the frame when calculating the correct exposure for an image. See also averaging metering, matrix metering, and spot metering.
Chroma. Color or hue.
Center-Weighted. This is the same as above except that an area in the very center of the image frame representing ~30% of the total area is given disproportionate weight in the calculations.
Center-Weighted Edit
Center-weighted light-meters favor the center of the frame, while taking into account the rest of the frame to a lesser extent.
Autofocus Edit ...
Center-weighted metering asesses the whole image area but assigns the most importance to the central 40 to 60%. This system is accurate in average lighting conditions, but can be fooled by excessively dark or light areas.
Center-Weighted Light Metering
Most digital cameras use this metering mode.
Center-weighted Average
Single Point Selection
Multi-segment
This allows the photographer to select a reading method more consistent with his/her own shooting style.
Center-weighted metering mode meters the brightness over a wide emphasis on the center of the screen. This method is used when the surrounding area brightness may not affect the picture.
Center-weighted metering assigns the greatest weight for exposure from the middle area of the frame. Therefore, it's good for times when your main subject is in the middle of the frame and you want to take a quick exposure.
Center-weighted and averaging modes use a much simpler algorithm than multi-segment modes and most people won't use them very often.
Center-Weighted Metering Mode
The Center-Weighted metering mode is without a doubt the most imprecise of the three metering modes we will be looking at in this article.
Center-Weighted: A method of determining the correct exposure for a photograph which gives more importance to the light meter reading at the center of the frame than to the peripheral areas.
The center-weighted mode is similar to the zonal metering system in that it takes reading from multiple area of the frame but it differs from the multi-segmented mode in that it places emphasis on the readings from the center of the frame.
Center-weighted meters the entire setup but assigns the most importance to the center quarter of the viewfinder where the most important objects are usually located. This mode is ideal for portraits and larger desktop studio subjects.
There are two basic alternatives: center-weighted and spot metering. For the ultimate in control, spot-metering is the way to go. I won't talk too much about center-weighted but spot metering is the topic of next week's tip.
Typical scenes for Center-weighted Metering
Try to find a larger area which has to be exposed right and -again- think of the limitation of the metering system.
Popular modes include center-weighted metering (an average of the frame, with emphasis on the center of the image), spot metering (generally 1 to 3 percent of the image), ...
Example of a single, center-weighted auto-focus icon, as seen through the viewfinder. In this instance, the default color is light blue, meaning that the image is not yet in focus.
I use matrix metering for wide angle, and center-weighted for macro. If you are shooting with your strobes on manual, this will have no effect.
White balance (effects JPEGs only)
First, read more about color temperature.
- Continuous servo autofocus
- Lock the center focus sensor
- Center-weighted metering
- Aperture priority (usually wide open)
- Possibly some negative exposure value (EV) to avoid blowing out white jerseys. Hopefully not more than -1.0.
As to exposure technique, I do usually underexpose by 1/3 to 1 1/3 stops when shooting in bright daylight (center-weighted average mode). Then I pull up the curve in post-processing.
Like its predecessors, the M9 uses a silicon photodiode in the base of the camera to take center-weighted exposure readings off the light-colored blades of the first shutter curtain, and it’ ...
Original unsharpened image
Canon PowerShot S50
Program AE, Center-weighted averaging, Auto WB
7.1mm, 1/60 sec., F2.8, ISO 50, Flash ON ...
Other options include center-weighted and spot metering. Those who have more experience or who want to expand their photographic knowledge should look for the full host of metering system options.
Exposure meter: Built-in digital camera meter that measures the amount of light when framing a photo and determines the best exposure. Matrix (Evaluative), Spot and Center-weighted are the main metering types; some digital cameras have all three.
Measures the amount of light when framing a photo and determines the best exposure. The main digital camera metering types are: Matrix (Evaluative), Spot and Center-weighted.
Neutral Density (ND) Filter ...
While correctable with filtration using on-camera center-weighted neutral density filters or electronically in Photoshop, it is often used as a creative device to direct the eye back to the center of the frame.
Metering. Metering is used to calculate the exposure from the existing light conditions. Includes Matrix Metering, Spot metering and Center-weighted metering.
The solution is to either compensate exposure and change the style of reading, such as using a center-weighted averaging pattern and locking exposure or using spot and adding +1 exposure compensation, as was used for this final shot.
Another possibility to enhance the importance of the main subject is to look for spot light. The dark areas around you subject take the role of a frame. Obviously metering is a bit more tricky here - using spot or center-weighted is certainly a good ...
(white paper covers the floor below); about 200 lit candles
3) Para 220 FB (defocused)
as fill-in light
4) Softlight Reflector P with diffuser and honeycomb grids hidden behind the acrylic to light the background
unevenly (center-weighted) ...
use a kind of amoeboid-shaped averaging pattern, based on some esoteric scientific high-falutin' calculation that IS rocket science. Most manuals even have a picture of it. There are many cameras with different meter methods, such as center-weighted ...
Bright Subject A bright object or highlight area can affect the sensing area of a spot or center-weighted TTL meter. This results in an underexposed image.
 See also: Meter, Metering, Camera, Exposure, Image
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