Mamiya 645 AF, 211125 manual Flash Photography, Metz Flash SCA3951 System Functions, For example

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Flash Photography

In addition to its standard flash sync system, the Mamiya 645 AF features TTL (through the lens), off the film (OTF), electronic flash exposure automation. A flash sensor located inside the camera body reads the flash reflected off the film surface at the moment of exposure. The sensor is connected via the Mamiya 645 AF's dedicated hot-shoe to a shoe- or handle-mount style Metz flash unit via the Metz SCA 3951 TTL Adapter. Maximum flash sync speed is 1/125 sec., making daytime syncronization possible.

The ISO of the flash is automatically set through the TTL connection from the camera's Film Magazine; any adjustment to this is instantly recognized after the setting is locked and the shutter release is half-pressed. Also, when Film Magazines with different ISO settings are switched on the camera body, the TTL flash connection instantly recognizes the change.

To utilize the TTL flash feature with all TTL-operable Metz flash units, a Metz SCA 3951 Module is required. Please see chart below for compatibility and/or additional adapters that may be necessary.

The resulting flash exposure automation determines correct flash exposure andautomati- cally adjusts the output of the flash. It also automatically cor- rects for exposure compensa- tion normally required when using filters, close-up bellows or extension tubes. However as

with all TTL systems, it requires manual compensation for differences in film surface reflection characteristics. The amount of compensation is determined by experimentation and is performed on the Mamiya 645 AF's Film Magazine ISO setting.

1.Mount the SCA3951 adapter onto the Metz flash, insert fully into the camera's hot shoe, then tighten with the fixing knob “A”

2.Set the exposure mode, then check the shutter speed and aperture.

*With TTL flash photography, the reflection of the flash is metered and the intensity of the flash is adjusted automatically, so TTL flash photography is not necessarily suited to all conditions. In the cases described below, we recommend that you use a flash meter to check the intensity of the flash or to use a manual flash setting.

For example:

(1)When the size of the subject you want to light with the flash is relatively small within the picture

(2)When the background behind the subject is extremely bright or when there is a strongly reflective object in the background

(3) When the background behind the subject is extremely dark (outdoors at night, etc.)

(4)For flash photography with a narrow latitude film

Metz Flash SCA3951 System Functions

*The shutter cannot be released if the flash's OK lamp is lit.

*When using an SCA300 system flash (Metz 60CT-4,45CL-4, etc.), also use the SCA3000C converter (sold separately).

*For details, refer to the operating instructions of the flash and the adapter.

*To use the guide number indicated on the flash fully, emit the flash several seconds after the charging completed indicator lights.

*Cautions on using instant film

Instant film (Polaroid 100-600 series and Fuji FP series), has a lower reflection rate than regular film. Exposure compensation is necessary when using the flash in the TTL mode.

In general, set the exposure compensation to about 1 or 1 1/3 EV on the minus side.

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Contents Page Congratulations on your purchase of the Mamiya 645 AF Camera Special Advice To Professional PhotographersNames of Parts and Functions Magazine LCD Main Liquid Crystal Display LCDContents 48 ~53 54 ~6970 ~86 Be sure the batteries are placed with proper polarity Checking the Battery PowerAfter inserting the batteries, set the date and time. See Amount of film that can be taken with one set of batteriesReplacing the diopter corrected lens Diopter AdjustmentAttaching/Removing the Lens Attaching RemovingAttaching the lens Setting the Film Speed Installing the Battery in the MagazineAttaching/Detaching the Magazine Shutter Safety RetractionAttaching DetachingLoading Film in the Magazine When the pressure plate 120/220 is set erroneouslyShutter Release Button Shutter Release Button/Holding the CameraHolding the Camera Insert the loaded film insert into MagazineTaking Photos in the Full Automatic Mode Precautions for Film Unloading FocusUnloading the exposed film Exposure film Removing a partially exposed film rollManual Focus Mode M Single Focus Mode SContinuous Focus Mode C Set the focus mode selector lever To M manual focus modeSubjects With Which Auto Focusing May Not Work AF Supplemental Infrared Light Using the Focus Lock FunctionCamera Operation Test Open the back coverLector lever to S to turn Program AE P Shifting the ProgramAperture Priority AE Shutter Priority AE Manual Mode MMode Time Mode TSpot Exposure Metering Mode S Average Exposure Metering Mode aAverage/Spot Auto Switching Exposure Metering Mode A-S Auto Display of the exposure compensation Viewfinders LCD panelSingle-Frame Mode/Continuous Mode Single-Frame ModeContinuous Mode Automatic exposure operation in the auto bracketing mode Auto Bracketing ModeCanceling the Multiple Exposure Mode Multiple Exposure ModeSelf Timer Mode Bulb Mode Time ModeExtended Exposure Modes Bulb and Time Modes How to meter and focus at two different distances AE Lock ModeUsing auto focus and auto exposure Manual modeTaking Photos with the Mirror Up Infrared Photography Depth of fieldFlash Photography Metz Flash SCA3951 System FunctionsFor example Flash Photography with Flashes other than Metz Depth of Field Preview/Eyepiece ShutterDepth of Field Preview Button Eyepiece ShutterUsing the M645 Manual Focus Lenses Changing The Focusing ScreenExternal Power Supply Front/Rear Dial Lock Mechanisms select dLoc Electronic Dial OperationsSetting the Index Number Setting the Date and TimeSelecting the Data to be Superimposed select Func Checking the data to be superimposedData superimpose modes Returning to the normal display Error MessagesUsing a Tripod Strap/Using a Tripod/Auxiliary Release ContactIf the shutter cannot be released StrapSpecifications of 645AF Importance of Proper Maintenance Common Sense Camera Care and PracticeBatteries Care Liquid Crystal Display After-Sale Servicing
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