User Manual - Hasselblad.jp

H4D12Centre Weighted(23 x 20 mm) ≈ 25%CentreSpot(23 x 20 mm) ≈ 25%(Spot(diameter 7.5mm) ≈ 2.5%EXPMetering methodThere are three metering modes available. All three are reflective methods (measuringthe light reflected off various selected parts of the subject according to method) andare through the lens (TTL). These have the following designations (with their respectivedisplay symbols):— Centre Weighted— CentreSpot— SpotCentre Weighted: Commonly used for ‘average’ light situations where there is no particulardominance of light or dark areas across the tonal range. Takes into account approximately25% of the image seen in the viewfinder.CentreSpot: Emphasises the central section of the focusing screen equivalent to approximately25% of the image. This provides a balanced assessment and is a typicalchoice where the main subject is in the centre of the image.Spot: The sensitive area is equivalent to approximately 2.5% of the image area (the centralspot on the viewfinder screen). Any parts of the image outside of this area will not affectthe exposure reading. This provides a very accurate measurement of specific tones.Typically used in the zone system and similar light measuring situations where maximumcontrol is required. Also excellent for tonal comparison measurements. The spot modecan display ‘zones’ instead of EVs in the viewfinder display (see Camera Options).Selecting metering methodProceed as follows with the camera in active mode:1. Press the EXP button on the viewfinder.2. Turn the rear control wheel (in either direction 2a) to successively access the threechoices: Centre Weighted, Centre Spot and Spot 2b.3. Press Save (ISO / WB button) to retain the setting.RExposure methodExposure can be controlled either manually or by using one of four automatic modes.These have the following designations on the grip display:M– Manual3ISO / WBSaveASP– Aperture (priority)– Shutter (priority)– ProgramPv – Program variableIn each mode you can see both the aperture and the shutter speed information on thegrip display and on the viewfinder display.In manual mode, aperture is set by the front control wheel and the shutter speed by therear control wheel unless set otherwise in Custom Options #26In the automatic modes, the aperture and shutter speed settings are controlled by thecamera, either partially or completely according to setting. Within this mode there arefour choices.(Please see the Appendix for P and Pv mode charts that describe the aperture and shutterspeed setting combinations).38