KFM-2100 Flash Meter
For Both Flash and Ambient Light Readings - Simple, Easy-to-Use, Accurate
Flash Meter With Integrated Spot Meter
The Kenko KFM-2100 is an exposure meter that incorporates both flash and spot metering functions into one compact unit.
The KFM-2100 can simultaneously display an exposure reading on the flash meter (for measuring incident light) and an exposure reading on the spot meter (for measuring reflected light).
But its more than one simple easy-to-use integrated system that fits comfortably in your hand. It also incorporates the Exposure Navigation System, which displays information on the LCD that helps you determine the proper exposure for a scene.
Exposure Navigation System
The KFM-2100 allows you to confirm the exposure of each part of a scene being photographed. Conventionally, a photographer relies mainly on their experience and expertise when determining exposures. However, the KFM-2100 can emulate the decision making process on the LCD, guiding you to the exposure best suited to a particular photograph.
Ergonomic and Stylish
The KFM-2100 flash meter is a professional instrument that feels good in your hand and has controls that are logical and well laid out for ease of use.
Ergonomic and Stylish
Latitude is the degree to which you can over or under expose an image and still have acceptable image quality from the exposure. This concept is as critical with digital photography as with film. (Hint: Use your Digital Camera’s RAW setting for widest possible latitude also referred to as Dynamic Range, but a typical digital SLR's sensor has about a + or – 2 stop latitude range, making it similar to photographing with color negative film.)
The latitude or difference in exposure between the brightest highlight areas of a scene and the darkest shadow areas can be determined by the KFM-2100 to make better informed lighting and exposure choices with the latitude function and built-in 1º spot meter.
Note: Latitude and Dynamic Range can vary widely with different Digital SLR sensor types or different film types. Before using the KFM-2100 specify the correct latitude for the Digital camera or film being used..
*"Latitude" represents a film's effective exposure range. Normally, when a target object with extremely bright and dark areas is printed as a photograph, the bright areas are saturated with white and the dark areas are saturated with black. This phenomenon occurs when the
contrast between the bright and dark areas exceeds the latitude of the film.
Generally, color reversal films provide a latitude of about five stops.If the difference in brightness of the target object (difference in the spot meter's measured values) exceeds five stops, the bright and dark areas will be saturated white and black, respectively, when reproduced on film.
The KFM-2100 can display digital readings, not just in the LCD on the front of the meter, but on in a LCD display in the viewfinder window as well. This allows light reading to be seen while still looking through the viewfinder. The meter also has dioptric adjustments for more comfortable viewing.
Vertically Oriented LCD
The KFM-2100 flash meter has a large, easy-to-read vertical LCD that displays F No. as a large number value with a 1/10 intermediate stop as a smaller number next to the full stop aperture value. Or, the meter can be set to display the aperture in _ or 1/3 stop increments. A vertical analog scale along the side of the display also provides the same aperture information when taking basic readings.
The KFM-2100 flash mater has memory slots to store 10 separate readings. Both stored readings and the current reading can be displayed simultaneously in the vertical analog scale. Memory markers also show the number of stored readings. Having readings stored in memory makes it easier to analyze the contrast range of your subject, the lighting ratio or viewing several separate readings in relation to one another.
Ambient Light Reading
The KFM-2100 flash meter’s shutter speed can be selected in a range from as long as 30 minutes to as fast at 1/16,000 of a second (This range is selectable in full stop, _ stop or 1/3 stop increments). The light reading is displayed on the meter’s LCD window as both a digital and analog data. Once a reading is taken if you wish to change the shutter speed the aperture reading will automatically change accordingly. The KFM-2100 can read a very wide range of light from the very low equivalent EV -2.0 to 19.9 (incident light based on ISO 100). The meter can also be set to a Cine mode to be used with Cine cameras and display light readings from 8 to 128 frames/sec.
Flash Light Reading
When using with flash, select Cord or Non-Cord depending on the shooting conditions. For Cord setting, connect the Flash sync-cord to the Sync Terminal in the front of the FKM-2100 flash meter then a light reading can be taken by simply pressing the Measurement button on the side of the meter. When using a non-cord set-up, pressing the measurement button sets the meter in stand-by mode. When the flash is fired manually, the meter takes a reading.
When taking readings in mixed flash and ambient lighting, the KFM-2100 can measure the flash and ambient light almost simultaneously. The percentage of flash in the over-all exposure is then displayed in the analyze scale on the LCD. The analyze scale is divided into 4 sections, each section represents flash contribution of approximately 25% of the total lighting. For example, if 3 sections of the analyze scale are lit, the flash to ambient light ratio is approx. 75% flash to 25% ambient. After taking a reading, the shutter speed can be changed and the meter will recalculate the exposure. Setting a slower shutter speed would result in a greater ambient to flash ratio. Setting a faster shutter speed would result in a lesser ambient to flash ratio. The analyze scale helps you balance the 2 sources of lighting for more predictable results, so you can set the lighting and exposure to get the look you want.
The KFM-2100 flash meter has a calculation function that can be used to average readings stored in memory or bias exposures toward shadow or highlights when taking reflected light readings. This allows for more accurate recording of shadow or highlight detail.
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