Zhumell RF645 manual ·The remarkable lens shutter system, ·Hi-tech magnesium alloy Thixmolding

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Special Features of the Bronica RF 645

·A medium format coupled-meter rangefinder camera.

The Bronica RF 645 is a very compact and lightweight camera with a picture area approxi- mately 2.7 times larger than the 35mm format. The superior portability and versatility of this model compared with other medium format cameras ushers in an entirely new world of photographic possibilities.

·The remarkable lens shutter system

The electronically controlled #00 type lens shutter system developed for the Bronica RF 645 commands precise shutter speed control and automatic cocking, as well as aperture control incorporated within the shutter unit. The interface between the main camera body and the lens are conducted by means of a series of electronic contracts, resulting in high precision operation compared with conventional systems operated by mechanical couplers. The highly advanced lens shutter system is impressively stable and free of jolts caused by shut- ter shock, while it ensures synchronization with an electronic flash at any shutter speed allowing sophisticated flash photography.

·Automatic light shielding curtain engaged during lens interchange.

A lens shutter camera with interchangeable lens capability would normally require a light shielding curtain to be activated manually prior to detachment of the lens. The Bronica RF 645 had made such complex and awkward steps unnecessary, enabling photographers to focus on the shooting itself. In conjunction with the lens detachment operation, the light shielding curtain automatically covers the film aperture and locks into place. When the next lens is mounted on the camera, the curtain automatically opens to prepare the camera for the next shooting.

·Hi-tech magnesium alloy Thixmolding

The top cover of the Bronica RF 645, a lightweight and extremely sturdy camera, is manufac- tured with an advanced Thixmolding technique. This technology enables a hard and rigid magnesium alloy to be molded into intricate and complex forms required to hold and pro- tect internal mechanism with precision in various, at times even adverse, operating condi- tions.

·Rear cover design provides sophisticated controls with easy access and handling.

Switches and dials on the rear cover are grouped together on the rear cover for easy han- dling and to enable confirmation of settings at a glance, an extremely important feature for use in the hands of serious photographers.

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Contents RF645 Contents ·Hi-tech magnesium alloy Thixmolding ·The remarkable lens shutter system·Easy AE lock method with continuous AE lock memory system Nomenclature Getting Started Getting Started Attaching the LensDetaching the Lens Attaching the Proper Diopter Adjustment Lens Attaching the StrapGetting Started Check Battery Capacity Preparing to ShootLoading Film Preparing to Shoot Film winding and ratcheted winding lever Setting Film Speed25 26 28 29 How to Remove a Used Roll of FilmFilm Memo Holder 100 200 400 800Holding the Camera Main SwitchShooting Shooting ViewfinderViewfinder Shutter Release ButtonShooting Shutter release button Viewfinder DisplayExposures Shutter Dial and Lens Aperture Operations Exposures Exposure Metering SystemProgram AE mode Aperture priority AE modeExposure Control Modes Exposures Exposure CompensationManual Exposure Control Focusing Shooting ExposuresAE Lock Split image focus Other FeaturesAutomatic Parallax Compensation Multiple ExposuresSelftimer Manual Flash Exposure Control Automatic Shutter Speed AdjustmentAutomatic Lens Aperture and Film Speed Settings Electronic Flash PhotographyOther Electronic Flash Features Long Exposure PhotographyInfrared Photography Depth of Field Troubleshooting What’sHappening Cancel AE lock Press AE L AL mark Mode What’s Cause of trouble Means to solve How to operate Means to solve How to operateCause of trouble Means to solve How to operate Exposure Measuring Range and Ev ReferencesShutter SpecificationsFilm Advance Test shutter action Preliminary Checklist Before loading filmActivate the main switch Observe the LCD panel in the viewfinderAbout the Batteries Storage and Maintenance LCD Liquid Crystal DisplayOperational Conditions of Camera