Minolta Auto Meter F
|Minolta Auto Meter IV F|
image by Studioesper (Image rights)
This page is not to be confused with the Minolta Flash Meter series of meters.
The Minolta Auto Meter series was able to measure flash starting with a revision of the Auto Meter III.
After Minolta exited the photo market, Kenko started releasing the final three Minolta meter under their own brand.
Auto Meter III
Auto Meter III is a digital electronic exposure meter with a silicon photo cell. The previous Auto Meter line were Cds meters, with a calculator dial. This meter is powered by 4LR44 or equivalent. The meter does not have a power button, the screen will automacally deactivate after two minutes of inactivity. Press the recall button to awaken the display, and your previous measurement will be displayed. The display will blink if the battery is too low. There is a measuremnt lock switch to prevent taking of measurements.
limitations and issues
- Display. The third and fourth digit of ASA and shutter speeds can only display zeros. eg shutter speed of 125 will display 120.
- Power consumption. May people complain about a high rate of battery consumsuion. This is in fact caused by not having a power switch. The buttons on the face of the unit is raised enought to trigger the meter on from an inavtive mode. Minolta did provide a keygaurd that did improve this somewhat. The best thing to do is remove the battery when not in use.
Auto Meter III F
The Auto Meter III F is a modified version of the regular Auto Meter III. The primary added feature was the ability to measure flash.
- Viewfinder 10°: for reflective light measurement with a 10°.
- 40° reflected light attachment
- Flat diffuser: to measure flat subjects, illuminance, brightness ratio of light sources.
- Mini Receptor: for close ups and macro photography
- Booster II: for measuring from camera eye pieces and ground glass. Also useful for reflected light measurement at 60°..
- Spot Mask: for calculating exposures of enlargements in a darkroom.
- 4x and 8x spherical ND filter: used when light is too bright to measure.
Auto Meter IV F
The Auto Meter IV F was released in 1992. It has a newly designed body, with expanded metering sensitivity. This meter has a power button unlike the previous model solving many complains and battery usage problems. The battery consumption has also been reduced to a single inexpensive 1.5v AA/ LR6 battery. Like the previous model there is a memory feature available to store a previous settings. This model can store up to the last three readings. To use this feature, take a measurement reading. You should see on the top LCD analog scale a marker. To store this reading press the M button. When you take an additional measurement from this point, the analog marker remains, but an additional marker appears and the main display changes to the new reading. To average a reading just press the A button after you store two markers. A third marker will appear between the original two.
Auto Meter V F
Auto Meter V F was released in 2002 and is nearly identical to the older Auto Meter IV F. This model was also released as the Kenko KFM-1100 after Minolta exited the photo market.
The meter does have some changes compared the the older IV F. It has the ability to measure the proportions of flash and ambient light making it easier to modify different types of lighting. The ability to make many more changes in custom settings in alt mode, while the previous only had a screw exposure correcting setting in the battery compartment. Exposure correction value can be changed ±10 EV, shutter at full, half or a third, F no. can be changed to full or half stop display.
- Flat Diffuser
- 40° reflected light attachment
- Mini Receptor
- Viewfinder 5°
|Auto Meter III F||Auto Meter IV F||Auto Meter V F|
|Measuring system||incident and reflected|
|Measuring element||Silicon Photo Diode|
|Measuring range incident||-2.4 to 19.1 EV||-2 to 19.9|
|Measuring range reflected||1 to 22.5 EV||1.2 to 23.1 EV|
|Measuring range viewfinder||?||vf 5°: 2.5 to 24.4 EV
vf 10°: 1.2 to 23.1 EV
|vf 5°: 2.5 to 24.4 EV|
|ASA||12 to 6400 ASA||3 to 8000 ASA|
|Shutter||30min to 1/2000||30min to 1/8000|
|Shutter flash||?||1s to 1/500|
|Aperture||digital: f0.7 to 64
analog: f1 to 45
|f1 to 90|
|EV||-5.4 to 28.5 EV||-7.8 to 31.5 EV||-17 to 40.8 EV|
|Cine||8 to 128 fps|
|Power||1× 6v alkaline 4LR44
1× 6v silver oxide 4SR44
1× 6v PX28
|1x 1.5v AA / LR6|
|Dimensions||132 × 69 × 31||147 × 59 × 26|
|Weight||150g wo batt||125g wo batt|