True Focus with Absolute Position Lock allows true and fast auto-focusing throughout the image field and compensates with accuracy for focus shift when re-composing. Manual focus override is supported and an optional manual focus indicator in the viewfinder. Single shot and Continuous AF with focus lock are available and the camera also features AF Assist Illumination for working in dark environments. Spot, Center Spot and Center Weighted exposure metering is supported with manual, aperture-priority, shutter speed priority, programmed and programmed variable exposure modes.
The camera offers a wide ISO sensitivity range from 16 to 6400. A built-in flash or external flash compatible with SCA3002 can be used with an automatic TTL-OTF center-weighted system with adjustable output from -3 to +3. For manual flashes, a built-in metering system is available and a standard PC connecter on the camera body is supported. Flash sync speed is available to 1/800th of a second.
The H4X can work tethered to a computer or un-tethered with images stored to Compact Flash memory cards. A dot-matrix LCD monitor is provided on the grip to view camera setting information. An Acute Matte type D focusing screen is supplied and the camera also works with numerous optional focusing screens. The H4X is compatible with all Hasselblad HC and HCD lenses and all C-type lenses from the V system when using an optional CF lens adapter. The number of profile settings has been increased on the H4X to 8 and it also offers more programmable button options compared to previous H-system cameras.True Focus & Absolute Position Lock (APL): True Focus enables fast and accurate focusing throughout the image field. The Absolute Position Lock (APL) processor forms the foundation of Hasselblad's True Focus feature using modern yaw rate sensor technology to measure angular velocity. The APL processor accurately logs camera movement during any re-composing, then uses these exact measurements to calculate the necessary focus adjustment and programs the lens's focus motor so it can compensate. The APL processor computes the positional algorithms and carries out the required focus corrections at such a rapid speed that no shutter lag occurs.