Hasselblad 70480533 Light metering and exposure control, ISO & White Balance button, 2000 10000 K

H4D

1

2

3

4

5

ISO/WB

F

AF

R

ISO/WB

Save

  Light metering and exposure control

Two primary factors have to be considered when making exposure control choice, namely, metering method and exposure method:

Metering method determines in which manner the light measurement is made and how much of the image is taken into account (Centre Weighted, CentreSpot and Spot).

Exposure method involves the parameters and deciding factors about how the light measurement is translated into aperture and shutter speeds. Here the choice is about the camera controls and their effect on the result or suitability for the subject. Included in this choice is the type of automation too (Manual for 100% user control, Aperture ­priority, Program, etc for automated control).

Some methods and modes are much more suited to various situations and applications than others, while some depend to a greater degree on personal preference and ways of working. A discussion of the points to consider in this context is beyond the scope of this manual.

Since the light measuring system is TTL, filter factors, lens extension/extension ring fac- tors, etc, are automatically taken into account for average purposes. However, some combinations of methods and equipment can cause slight discrepancies for various reasons and therefore for critical work you should make alternative captures to suit per- sonal preference.

N o t e

Exposures are displayed on the grip display to within 1, 1/2 and 1/3 EV tolerances (depen- dent on setting). This means that ‘half-stops’ are shown in a form that can differ from more traditional displays. For example, the position between f/ 8 and f/11 is displayed as f9.5 and likewise the position between 1/30s and 1/60s is displayed as 45. Therefore a display show- ing ‘f 9.5 45’ simply means ‘f/9.5 at 1/45 second’. The appearance of an ‘s’ after the ­shutter speed signifies whole seconds so, for example, ‘32s’ on the display signifies an exposure time of 32 seconds, not 1/30.

  ISO & White Balance button

The ISO/WB button provides immediate access to ISO and White Balance settings. The front and rear control wheels are used to make the desired changes. The settings are automatically and simultaneously transferred from the camera to the sensor unit. Please note that the changes are only displayed on the sensor unit when the settings have been

saved. See also White Balance on sensor unit .

1)Press the ISO/WB button on the grip.

2)To make an ISO setting, turn the front control wheel to select the desired rating.

3)To make a preset White Balance setting, turn the rear control wheel to choose between:

Daylight, Shade, Cloudy, Flash, Fluorescent and Tungsten

4)To make a Manual White Balance setting (not a White balance test exposure), press the Man. (AF) button and then turn the rear control wheel to choose a color temperature:

2000 – 10000 K

5)Press SAVE (ISO/WB button) to save the setting.

N o t e

White Balance settings are only approximate color temperature settings. They are only used for user convenience when viewing. 3F/3FR files are raw format files and therefore con- tain all the information required for correction in Phocus and/or other software, regardless of the original color temperature at the time of exposure.

41