Fujifilm GA645Zi Manual

The Fujifilm GA645Zi is a professional medium format autofocus camera featuring a zoom lens, automatic exposure control, and advanced metering system. This camera combines the quality of medium format photography with the convenience of modern automation, making it ideal for professional photographers and serious enthusiasts. Below are key sections for operation, features, specifications, maintenance, and troubleshooting.

1. Features at a Glance 2. Camera Overview 3. Basic Operation 4. Specifications 5. Controls and Settings 6. Lens and Zoom Operation 7. Exposure Modes 8. Film Loading and Unloading 9. Care & Maintenance 10. Accessories 11. Troubleshooting

Features at a Glance

Key components: Medium format autofocus camera, Zoom lens (55-90mm), Automatic exposure control, Built-in flash, LCD information panel, Multiple exposure modes.

Feature	Description
Zoom Lens	55-90mm f/4.5-6.9 autofocus zoom lens
Film Format	120/220 medium format film
Autofocus System	Passive infrared AF with focus lock
Exposure Control	Program AE and Aperture Priority modes
Metering System	TTL center-weighted metering
Built-in Flash	Automatic pop-up flash with red-eye reduction
LCD Panel	Displays shooting information and settings
Power Source	2CR5 6V lithium battery
Viewfinder	Bright frame viewfinder with diopter adjustment
Exposure Compensation	±2 EV in 1/3 step increments

Camera Overview

Familiarize yourself with camera components and layout.

Front: Lens, AF window, self-timer lamp, grip
Top: Shutter button, mode dial, LCD panel, power switch
Back: Viewfinder, film counter, function buttons
Bottom: Battery compartment, tripod socket
Side: Flash button, exposure compensation dial

WARNING! Keep camera away from water and extreme temperatures. Handle with care to avoid damage to lens and electronics.

Basic Operation

Power on camera; check battery level on LCD.

Load film: Open back, insert 120/220 film, advance to frame 1
Set shooting mode: Use mode dial for Program AE or Aperture Priority
Compose and focus: Half-press shutter for AF, full press to capture
Advance film: Camera automatically advances to next frame
Unload film: Rewind when counter reaches end

CAUTION! Never force camera controls. If resistance is felt, check for obstructions.

Specifications

Camera Type: Medium format autofocus zoom camera
Lens: Fujinon 55-90mm f/4.5-6.9 (7 elements in 6 groups)
Shutter: Electronic programmed shutter, 2 sec to 1/700 sec
Exposure Metering: TTL center-weighted, EV 4 to EV 17 (ISO 100)
Film Speed: ISO 25-3200 (DX coding), manual setting available
Focusing: 0.7m to infinity, macro mode available
Flash: GN 14 (ISO 100), sync speed 1/500 sec
Power Source: One 2CR5 6V lithium battery
Dimensions: 134 × 83 × 107 mm
Weight: 780g (without battery and film)

Controls and Settings

Access functions via mode dial and function buttons. Top Panel: Power switch, shutter button, mode dial, LCD panel.

Mode Dial: P (Program AE), A (Aperture Priority), OFF, Bulb. Function Buttons: Flash mode, exposure compensation, self-timer, focus lock.

Exposure: Program AE automatic, Aperture Priority manual selection. Flash: Auto, forced on, off, red-eye reduction. Focus: Single AF, continuous AF, manual focus available. Display: LCD shows frame counter, battery, exposure info, flash status.

Lens and Zoom Operation

Zoom lens covers 55-90mm range (equivalent to 34-56mm in 35mm format).

Turn camera on and ensure lens cap is removed
Use zoom lever to select focal length (55mm wide to 90mm telephoto)
Half-press shutter to activate autofocus system
Full press to capture image at selected zoom setting

Tip: Use wider angles for landscapes, telephoto for portraits and details.

Exposure Modes

Supports Program AE and Aperture Priority exposure control.

Program AE: Camera selects both aperture and shutter speed automatically
Aperture Priority: User selects aperture, camera sets appropriate shutter speed
Exposure Compensation: Adjust exposure ±2 EV for backlit or high-contrast scenes
Exposure Lock: Use AEL button to lock exposure for recomposing
Bracketing: Automatic exposure bracketing available in some modes
Metering: TTL center-weighted metering for accurate exposure
Film Speed: Automatic DX coding or manual ISO setting
Flash Exposure: Automatic flash exposure compensation

WARNING! Do not point camera directly at sun through viewfinder. Can cause eye damage.

Film Loading and Unloading

Proper film handling ensures optimal image quality.

Care & Maintenance

Remove battery before long-term storage. Clean with soft brush and lens tissue only.

CAUTION! Do not use alcohol or solvents on camera body or lens. Store in dry, cool place with silica gel.

Accessories

Lens hood (LH-M54), Soft case SC-M54, Neck strap, Remote release cord, Filters (55mm thread). For complete accessory list, visit www.fujifilm.com or contact authorized dealers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Camera doesn't power on	Dead battery/contacts	Replace 2CR5 battery; clean battery contacts.
Autofocus not working	Low light/obstacles	Use flash or focus assist; ensure clear path to subject.
Film not advancing	Loading error/battery	Reload film properly; check battery level.
Blurry images	Camera shake/focus	Use faster shutter speed; ensure proper focus lock.
Flash not firing	Settings/battery	Set flash to auto or on; check battery power.

Reset: Remove battery for 30 seconds to reset electronics.

Service: Authorized Fujifilm service centers; www.fujifilm.com/support