Kenko KFM-1100 Auto Digi Meter

KFM-1100 Auto Digi Meter

Light meter for both flash and ambient light readings - simple, easy-to-use, accurate.
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Instruction Manual   PDF, 8.07 Mb

Ambient Light Readings

The KFM-1100 shutter speed can be selected in a range from as long as 30 minutes to as fast at 1/8000 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 digital and analog data. If you wish to select a different shutter speed after a reading is taken, the aperture reading will automatically change accordingly. The KFM-1100 can read a very wide range of light from the very low equivalent EV -2.0 to EV 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 KFM-1100 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.

Analyze Function

When taking readings in mixed flash and ambientlighting, the KFM-1100 can measure the flash and ambient light almost simultaneously. The percentage of flash light 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. kfm1100_1

Calculation Function

The KFM-1100s calculation function 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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kfm1100_5The KFM-1100 has memory slots to store 2 separate readings. Both stored readings and the current reading are displayed simultaneously in the 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.

Monitor Function

kfm1100_6The KFM-1100 has a brightness difference function that can be used to adjust lighting ratios or check for background light uniformity, very useful for product photography, portraits, etc. Checking for lighting uniformity across the entire seen is a critical use for light meters.Simply take a reading on your main reference point, then press the S/A/H button and then take reading on the other areas of the scene. The meter will display the brightness differences in term of +/- EV in 0.1 EV increments.

Custom Settings

At any time you can set the display readings to your liking for: Selecting the shutter speed stops (1, _, 1/3 stops) Selecting the F no. Display mode (F number + 0.1 increment intermediate value display, or just F number direct reading display) Selecting the exposure correction value (EV – 10 to 10).

Names of Parts

  1. kfm1100_7Light Receptor Head 270 Degree swivel, accepts flat diffuser.
  2. Power button.
  3. S/A/H (shadow / average / highlight) button Sets the KFM-1100's calculation function; desired function is selected using the up/down dial (shadow / highlight available only for reflected-light measurements).
  4. MEMORY button Stores the current reading in memory. 2 measurements can be stored.
  5. LCD Data panel Large, Easy-to-read LCD to give you the information you need at a glance.
  6. ISO button For setting the main ISO using the up/down dial on the side of the meter.
  7. Display-selector button Changes display units between an f-number and an EV readout.
  8. MODE button Changes the measuring mode between Ambient, Cord and Non-Cord.
  9. Measuring button For taking light readings.
  10. Up/Down control For adjusting shutter-speed and ISO values: Shutter-speed range: 1/8000 sec. -30min. in 1/3-stop increments (ambient); 1/500-1 sec. in 1/3-stop increments (flash) Cine-speed range: 8-128 frames/sec.
  11. Battery cover.
  12. Sync terminal For Corded flash readings.
  13. Accessory-receptor jack.
General Info
Kenko KFM-1100 Auto Digi Meter
Hand-held exposure meter for incident and flash light
Main Characteristics
Reception Method
Incident-light readings
Incident-spherical diffuser
270° rotating receptor head
Receptor Elements
Silicon photocell
Measuring Modes
AMBI - ambient light, CORD - flash w/sync cord, NON-CORD - flash without sync cord
Measuring Range
Ambient light: EV +/- 2.0 to 19.9
Flash light: +/- 0.1 stop
Flash for Incident Light
F 1.0 to 128 + 0.9 stop
For 40° Reflected Light
F 1.0 to 90 + 0.9 stop
For 5° Spot Viewfinder
F 1.0 to 90 + 0.9 stop
+/- 0.1 EV
Display Range
Exposure: F 1.0 to 128 +0.9 stop (0.1 stop increments)
EV: -17 to 40.9 (0.1 stop increments)
Shutter speed (ambient): 30 min. to 1/8000 sec.
Shutter speed (flash): 30 min. to 1/1000 sec.
Frame rate (opening angle of 180°): 8 to 128 fps
ISO: 3 to 8000
Exposure difference: -10 to +10 (0.1 stop increments)
Analog scale: F 1.0 to 90 (1/2 stop increments)
Analyze scale: Flash light proportion 0 to 100% (25% increments)
Additional Info
One AA alkaline dry-cell battery (LR-6/1.5V)
Battery Life
Approx. 50 hours continuous operation in AMBI mode
Operation Temperature Range
-10° to + 50°C with 85% relative humidity
Measurements (WxHxD), mm
Weight, g
135 (w/o battery)
Case, Spherical diffuser, Strap
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