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Aperture Change with Subject Distance (at ASA100, with 50mm f/1.4 EF lens)

B. Using the flash with the aperture set to AUTO: 1. Align the white button on the aperture ring with the center index (Photo 11). 2. Turn on the distance priority switch of the EF lens (Photo 9). 3. Set the flash mode selector switch (12) to MZ AUTO, and turn on the main switch (19). The channel number may be set to either CH1 or CH2 (Photo 10). 4. A few seconds later, the pilot lamp will light. When the shutter button of the camera is pressed slightly, the EF mark indicating completion of charging and the correct aperture value calculated by the camera will appear in the viewfinder.

Aperture Change with Subject Distance:

(when using ASA100 film and a 50mm U1.4 EF lens)

1. The aperture changes automatically with the subject distance. 2. A quarter quantity of full flash (GN18) will emit for subject distance up to about 1 3m. Since 3/4 of the energy remains in the capacitor, recharging can be made rapidly. 3. The flash is automatically switched to the full quantity flash for a subject distance exceeding about 1 3m. 4. For the subject distance exceeding about 26m, the "EF1.4" will flash repeatedly to warn that you have exceeded the flash range. 5. When the focusing distance is less than 1.1 m, "EF16" will flash to warn that the subject is too close for flash. If you stop down the aperture to the minimum, the automatic flash control becomes possible up to 0.5m.

Using on the ZE-X with the E Lens:

1. Align the white button of the aperture ring with the center index (Photo 12).

2. Set the Hash mode selector switch (12) to MZ AUTO, and turn on the main switch (19). The channel number may be set to either CH1 or CH2 (Photo 1 3).

3. A few seconds later, the pilot lamp will light. If the shutter button is pressed halfway, the EF mark representing the completion of charging and the effective flash range will be displayed in meters. When ASA 100 film is used, for example, the value will read 4.0 m, and the aperture of the camera is automatically set to f/8.

4. To take a photograph of a subject farther than the distance displayed in the viewfinder, open up the aperture. The limit distance will then increase. The distance displayed when the aperture is fully opened represents the limit at which photographing with correct exposure is possible.

· The distance indications given in the viewfinder are based on the lens aperture scale and should be taken as approximate only.4www.butkus.org

· The aperture range that can be used varies depending upon the film sensitivity, and the effective flash range with respect to the apertures also varies. For detail, refer to Table (T-2). The figures on the table represent the distance in meters and the figures in parentheses indicate when a wide adapter is employed.

When Using Cameras other than ZE-X (such as ZE, ZE-2, M645, RB67, etc.)

Using on cameras equipped with a hotshoe (Fig. A) (such as ZE, ZE-2 or M645 with a finder having hot-shoe)

(1 ) Attach the sensor base to the hot-shoe.

(2) Insert the main cord into the main cord socket of the flash. The shutter release cord is not used.

Using on cameras not equipped with a hot-shoe (Fig. B and C )

(such as RB67, M645 with the waist level finder, Mamiya Press, Mamiya C, etc.)

(1 ) Attach the sensor base to the PC adapter and fit the adapter to the camera body or to the accessory shoe of the flash unit.

(2) Insert the PC adapter plug into the X contact on the lens or camera. If the lens is an M-X selecting type, set it at the X setting.4www.butkus.org

(3) Insert the main cord into the main cord socket of the flash. The shutter release cord is not used.

When using a 70mm f/2.8 tens built-in lens shutter for M645

Be sure to use the PC adapter and insert the plug into the synchro terminal of the lens, do not insert the plug into the terminal on the camera body.

Note:
When not using the shutter release cord of the sensor base such as when using the flash unit for cameras other than the ZE-X camera, the shutter release cord can be kept plugged into the receiver socket (1 ) of the flash unit. However, when you hold the flash unit, keep off your fingers from the shutter release button of the flash unit because when the shutter release button of the flash unit is pressed, the flash will be fired independently of the shutter release.


Set the flash to AUTO and select an aperture (Photo 14)

1. Set the flash mode selector switch) to AUTO. Flash is prevented when the switch is set on MZ AUTO. 2. Set the GN adjusting switch (17) to AUTO (FULL). 3. Move the film speed seeing knob (15) and align the film speed to be used with the red line.4www.butkus.org 4. Select any one of aperture values indicated by green, orange and blue lines and match the index of the aperture selector (13) with the selected line.

· The figures on both sides of the aperture scale represent the distance in meters and feet, at which flash photographing is possible, for each aperture value.

· When using an ASA 100 film, automatic flash is possible up to the subject distance of 13 meters for green (f/2.8), 6.5 meters for orange (f/5.6) and 3.2 meters for blue (F/11). See Table (T-2) for details.

5. Set the lens aperture of the camera to the same value as the aperture value set to the flash.

6. Turn ON the main switch/channel selector switch (19). The channel number may be set to either CH1 or CH2.

7. A few seconds later, the pilot lamp will light, indicating that the flash unit is ready for firing.

Shutter speed of the camera to be used
1. In the ZE and ZE-2 cameras, the shutter speed is automatically set to 1/60 sec. as soon as the flash unit is fully charged. If the shutter speed is set to a speed slower than 1/60 sec., the camera works at that speed. When the ZE-2 camera is used in the manual mode, the mark "M" will flash in the viewfinder. The mark "M" will stop flashing and keeps lighting when the flash unit is fully charged.

2. Set the shutter speed to "X" in the M645 series' cameras.4www.butkus.org

3. Use only shutter speeds slower than 1/250 sec. when using the lens shutter of the RB 67, Mamiya Press, Mamiya C, or the like.

Bounce Flash Photography

The flash head can be rotated 90 degrees upwards, 180 degrees to the left and 150 degrees to the right. Soft illumination can be obtained by permitting light to bounce on a white wall or ceiling.  To correctly receive reflected light from a subject, it is recommended to mount the sensor to the sensor base. In this case, the flash unit can be used while separated from the bracket.

Changing a Sensor

1. Open the battery chamber cover and withdraw the sensor (Photo 15). 2. Insert it into the sensor base with its groove facing downward (Photo 16). · Do not insert the sensor upside down with force, otherwise it does not operate and can not be removed. · Make sure the direction of the sensor when replacing the sensor to the flash unit. ·The effective flash range varies with the reflectivity of the bouncing surface, the angle and the distance. · In the bounce flash photography, the color tone will be affected by the color of the reflecting surface.4www.butkus.org

·When bounce-photographing, make sure that the distance priority switch of the EF lens is kept OFF. Since the EF lens controls the light quantity as the direct light to the subject, the light quantity will become insufficient if the distance priority switch is kept ON. In addition, neglect the distance indication appearing in the viewfinder.

Using the Wide Adapter
When using a wide-angle lens of 60 degrees or more, attach the wide adapter to the flash window.

The flash angle is approximately 70 degrees in the horizontal direction and approximately 53 degrees in the vertical direction and covers the angle of view of a 28mm lens of a 35mm camera. The guide number in this case reads "26".

When close-up photographing within 1 meter, it is recommended to use the wide adapter even when a standard lens is used. An exposure error is likely to occur in a short range due to deviation between the optical axis of the lens and the direction of flash. This error can be covered if the light is diffused by the wide adapter.

Attaching the Wide Adapter (Photo 17)

Insert the protuberance of the adapter into the groove on the left of the flash window and press the right side. To remove the wide adapter, pull out the right side first.

Manual Operation (Photo 18)

1. Set the flash mode selector switch (12) to MANU.

2. Decide the flash quantity with the GN adjusting switch (17). Use generally at the "FULL" position.

3. Move the film speed seeing knob (1 5) and align the film speed to be used with the red line.

4. Measure the subject distance and read the aperture value corresponding to the distance from the exposure calculator (14). Set the aperture of the lens to the value to obtain a proper exposure. For instance, if the shooting distance is 6.5m at the "FULL" quantity flash with an ASA 100 film, it is obvious that the aperture is to be set to 5.6

· When using the wide adapter, open the aperture by one step than the value obtained as above.4www.butkus.org

· When you want to shoot a subject at a specified aperture value, follow the following routine to adjust the flash quantity.

If you want to shoot a subject of the subject distance of 3m at the aperture value f/8 with an ASA 100 film;

1. Slide the film speed setting knob (15) until the aperture value "8" matches 3m on the exposure calculator.

2. Move the GN adjusting switch (17) until the red line matches the sensitivity of the film used. A half quantity of full flash will then emit to obtain a correct exposure.

Exposure for Multiple Flash 1. A proper exposure for multiple flash varies with the photographing situations. Under the multiple flash condition, the proper exposure can generally be determined by an aperture obtained from the guide number for the main flash, or else stop down by 1/3 to 1/2 step of the former.

2. When using plural flashes at the same position to increase the flash quantity, determine the guide number by the following equation:

GN = (root) GN1squared  + GN2 squared

For instance, when the guide number 36 and a flash with a guide number 18 are used in combination, the sum of the guide numbers is given by:

GN= (root) 32 squared + 18 squared = 40.

3. Carry out test photographing, or use a flash meter, to decide the precise exposure.
The guide number changes with the using film sensitivity and the quantity of light of the flash, as tabulated in Table 3.

Table3: Guide Number Table 

Light Quantity			Guide Number
Full	18	25	29	36	51	72	102
1/2	13	18	20	25	36	51	72
1/4	9	13	14	18	25	36	51
1/8	6	9	10	13	18	25	36
1/16	4.5	6	7	9	13	18	25
(ASA)	(25)	(50)	(64)	(100)	(200)	(400)	(800)

 When Using the Flash for Cameras of Other Makes

Connect the cord to a synchro terminal of a camera or lens, using the PC adapter for safety. If the sensor base is directly mounted to a camera equipped with a hot-shoe, the camera or flash will be damaged due to accidental or inadvertent contact of two contacts at the rear. Make sure to use the PC adapter.

Slave Flash and Remote Control Photography: Typical Example of use:  (1) Slave Flash (Fig.1) Slave flash can be made using another Mamiya MZ 36R in combination with the receiver MZ.

(How to Use):
Set the mode selector switch (12) of MZ 36R attached on the camera to SLV. Set the channel selector switch (19) to either CH1 or CH2 and the channel of the receiver MZ to the same channel number.4www.butkus.org

In this case, the MZ 36R attached on the camera operates in the manual flash mode. The quantity of light of the MZ 36R, to which the receiver is attached, can be adjusted by seeing the mode selector switch to MANU and adjusting the GN adjusting switch. Set the aperture of the lens to an aperture value calculated in accordance with "Deciding the Exposure for Multiple Flash". 

(2) Using as the Transmitter (Fig. 2)
Remote control photography can be made by using the receiver MZ in conjunction with the winder ZE. 

(How to Use)
Set the switches of the MZ 36R and the receiver MZ in the same way as above. In this case, the flash of the MZ 36R is used for transmission, so no flash effect can be obtained. The effective operation range is about 20m.


(3) Remote Control Flash Photography (fig. 3)
Full scale remote control flash photography be made by combining the MZ 36R with the transmitter MZ, the receiver MZ and the winder ZE.

(How to Use)
Set the channel of the transmitter to that of the receiver. Set the Mode Selector Switch of the MZ 36R to MZ-AUTO. In this case, flash photography can be made in the automatic flash mode.

Specifications:

Type: Grip type auto-electronic flash (equipped with sensor base)

Guide number: 36 (ASA100 · m), 26 with wide adapter

Angle of coverage: 45° vertical,60° horizontal. Provides coverage for 28mm wide-angle lens with wide adapter.

Recycling time: Alkaline-manganese M-Type: 10 sec. or less. Ni-Cad M Type: 7 sec. or less

Number of flashes: Alkaline-manganese: approximately 90 times. Ni-Cad: approximately 60 times.

Flash control system: Three flash mode selection of MZ-AUTO, AUTO, and MANU. MZ-AUTO: Full automatic flash control according to the subject distance (when combined with EF lens and ZE-X); reflected light control is also possible. AUTO: Automatic flash control by the quantity of reflected light. MANU: Adjustable over five stages from the full flash quantity to 1/16 of the full flash quantity.4www.butkus.org

Auto flash range: (ASA100)

MZ-AUTO: 0.5-26m when using f/1.4 EF lens  0.5-1 am when using f/1.4 E lens

AUTO: 1.0-13m at f/2.8  0.5- 6matf/5.6  0.5- am at f/11

Bounce: 90° up, 180° left and 150° right.

Slave control: Two-channel transmission is possible when set to SLV.

Film speed sensitivity: ASA25 to ASA800.

Shutter speed setting: When attached to Mamiya ZE series' camera, the shutter speed is automatically set to 1/60 sec. when the unit is fully charged.

Power source: Eight alkaline-manganese or Ni-Cd M-type batteries. 4www.butkus.org

· All specifications are subject to change without notice.

Notes:
· The guide numbers given were measured with new batteries 30 seconds after the pilot lamp lit.

· Recycling time is the shortest interval required between three consecutive flashes using Fresh batteries or fully charged Ni-Cad batteries.  (the newer alkaline rechargeable batteries may be better)

· The number of flashes is the count found by discharging the flash continuously at 30-second intervals until 30 seconds were required for the pilot lamp to light with a set of fresh batteries or fully charged Ni-Cad bakeries.

Notes on Batteries
1. Remove the batteries when the Mamiyalite MZ is not to be used for an extended period in order to prevent possible damage due to leakage.

2. Manganese batteries can also be used but the recycling time is longer and fewer flashes are possible.

3. Battery performance is less under low temperature conditions, so Ni-Cad batteries should always be used fully charged. Alkaline/manganese batteries should be kept warm during use.

4. All eight batteries should be replaced at the same time. Never mix new and old batteries, or batteries of different brands, as leakage may result.

5. Battery life varies depending on the type of bakery, the storage after manufacture, the amount of time that has elapsed since manufacture, whether usage is continuous or intermittent and the ambient temperature.

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