Difference between revisions of "Minolta Flash Meter"
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! scope="col" width="150" | Flash Meter II | ! scope="col" width="150" | Flash Meter II | ||
! scope="col" width="150" | Flash Meter III | ! scope="col" width="150" | Flash Meter III | ||
+ | ! scope="col" width="150" | Flash Meter IV | ||
+ | ! scope="col" width="150" | Flash Meter V | ||
|- | |- | ||
− | | Measuring system || colspan=" | + | | Measuring system || colspan="5" |incident and reflected; flash |
|- | |- | ||
− | | Measuring element ||colspan=" | + | | Measuring element ||colspan="5" |Silicon Blue Cell |
|- | |- | ||
− | | Measuring range incident || 22 to 2800 lux sec || 20 to 10,240 lux sec{{br}} 3 to 20 EV (100 ASA)||1 to 18.2 EV (100 ASA) | + | | Measuring range incident || 22 to 2800 lux sec || 20 to 10,240 lux sec{{br}} 3 to 20 EV (100 ASA)||1 to 18.2 EV (100 ASA)||colspan="2" |- 2 to 19.5 EV (100 ISO) |
|- | |- | ||
− | | Measuring range reflected || 1 to 128cd. sec./m²|| 8 to 4,096cd. sec./m²{{br}} 6 to 23 EV (100 ASA)||1 to 18.2 EV (100 ASA) | + | | Measuring range reflected || 1 to 128cd. sec./m²|| 8 to 4,096cd. sec./m²{{br}} 6 to 23 EV (100 ASA)||1 to 18.2 EV (100 ASA)|| ref40: 1 to 25.5 EV{{br}}vf10: 1 to 25.5 EV{{br}} vf5: 2.2 to 23.7 EV|| ref40: 1.2 to 23.1 EV{{br}}vf10: 1.2 to 23.1 EV{{br}} vf5: 2.5 to 24.4 EV |
|- | |- | ||
− | | ASA || 12 to 1,600 ASA || colspan="2" |12 to 32,000 ASA | + | | ASA/ISO || 12 to 1,600 ASA || colspan="2" |12 to 32,000 ASA|| 8 to 6400 ISO || 3 to 8,000 ISO |
|- | |- | ||
− | | Time || 1/30 to 1/250|| 1 to 1/250 || 30s to 1/1000 | + | | Time || 1/30 to 1/250|| 1 to 1/250 || 30s to 1/1000|| 30m to 1/8000 || 30m to 1/6000{{br}}flash: 30m to 1/1000 |
|- | |- | ||
− | | Aperture || ƒ1 to 128 || colspan="2" | ƒ1 to 90 | + | | Aperture || ƒ1 to 128 || colspan="2" | ƒ1 to 90|| colspan="2" |ƒ0.7 to 90 |
|- | |- | ||
− | | | + | | Cine || || || ||8 to 64 fps || 8 to 128 fps |
|- | |- | ||
− | | | + | | Power|| 5x 1.35v PX625 mercury{{br}} 1x 1.5v AA / LR6 battery || 9v battery / PP3 / 6LR61 || 6x 1.55v SR44 silver oxide || 1x 1.5v AA{{br}}1x 6v 4LR44 || 1x 1.5v AA |
|- | |- | ||
− | | Weight || colspan="2" | 340g|| 240g | + | | Dimensions || 131 x 72 x 35 mm || 146 x 74 x 42 mm || 157 x 56 x 30 mm || 153 x 68 x 28 mm || 58 x 68 x 28 |
+ | |- | ||
+ | | Weight || colspan="2" | 340g|| 240g || 200g || 165g | ||
|- | |- | ||
|} | |} |
Revision as of 17:10, 26 May 2011
The Minolta Flash Meter series was started in 1969 with a light meter bearing the same name. That original Minolta Flash Meter was an analog measuring instrument with a color-corrected silicon photo cell as light sensor. This element was developed and produced by Minolta itself, as well as the whole flash meter. The meter needs one AA-battery and five PX625 batteries. The analog instrument's scale changes when the ASA-preselector on the meter's top is re-adjusted. Then the EV-value scale stays, but the scale of corresponding apertures is shifted right or left. When the right ASA film speed value appears over the scales the measuring can be done. The meter's front side shows the instrument and the preselector for the shutter speed. The instrument's needle shows an approriate aperture value for the preselected film an shutter speeds. Therefore the big metal button on the meter's side must be pressed down. Then the needle shows the EV of the moment of pressing down the button. On the bottom are two connectors, one for a remote sensor and one for a flash firing cable. When a flashgun is connected the meter can be used in a dark room. When its big button is pressed the flash is triggered synchronized to the moment of measuring. The instrument's needle keeps staying over the measuring value as long as the button is pressed, and a little lamp over the scale makes it readable in the darkness until the button is released. Another small button serves for the battery check. The sensor is located behind a round hole in the meter's back. The hole is a screw mount for the diffusor. One of several different diffusors can be chosen.
Minolta Flash Meter |
In 1976 the series was continued with the Minolta Flash Meter II which had an LED display instead of an analog instrument scale.
In 1980 the Minolta Flash meter III followed. It had a more versatile LCD display and a built-in digital micro-controller. This kind of flash meter was further developed until the appeareance of the Flash Meter V in 1995.
Specs
Flash Meter | Flash Meter II | Flash Meter III | Flash Meter IV | Flash Meter V | |
---|---|---|---|---|---|
Measuring system | incident and reflected; flash | ||||
Measuring element | Silicon Blue Cell | ||||
Measuring range incident | 22 to 2800 lux sec | 20 to 10,240 lux sec 3 to 20 EV (100 ASA) |
1 to 18.2 EV (100 ASA) | - 2 to 19.5 EV (100 ISO) | |
Measuring range reflected | 1 to 128cd. sec./m² | 8 to 4,096cd. sec./m² 6 to 23 EV (100 ASA) |
1 to 18.2 EV (100 ASA) | ref40: 1 to 25.5 EV vf10: 1 to 25.5 EV vf5: 2.2 to 23.7 EV |
ref40: 1.2 to 23.1 EV vf10: 1.2 to 23.1 EV vf5: 2.5 to 24.4 EV |
ASA/ISO | 12 to 1,600 ASA | 12 to 32,000 ASA | 8 to 6400 ISO | 3 to 8,000 ISO | |
Time | 1/30 to 1/250 | 1 to 1/250 | 30s to 1/1000 | 30m to 1/8000 | 30m to 1/6000 flash: 30m to 1/1000 |
Aperture | ƒ1 to 128 | ƒ1 to 90 | ƒ0.7 to 90 | ||
Cine | 8 to 64 fps | 8 to 128 fps | |||
Power | 5x 1.35v PX625 mercury 1x 1.5v AA / LR6 battery |
9v battery / PP3 / 6LR61 | 6x 1.55v SR44 silver oxide | 1x 1.5v AA 1x 6v 4LR44 |
1x 1.5v AA |
Dimensions | 131 x 72 x 35 mm | 146 x 74 x 42 mm | 157 x 56 x 30 mm | 153 x 68 x 28 mm | 58 x 68 x 28 |
Weight | 340g | 240g | 200g | 165g |