Hasselblad H4D-40 digital camera
at a glance
7304 x 5478
3.0" lcd screen
Li-ion rechargeable
Hasselblad H4D-40 review summary
camera date Mar 10  
pixels / class 40M  Pro SLR digital camera
overall rating not rated overall camera rating  no reviews
image quality not rated image quality rating  
ease of use not rated usability rating  
camera body not rated camera body rating  
digital features not rated digital features rating  
photogr. ctrls not rated photographic controls rating  
user profile user profile: digital photography not specified yet
Hasselblad H4D-40 specifications
lens / zoom  Hasselblad HC and HCD lenses with integral leaf shutter. All lenses from the V system with optional CF lens adapter
focus / macro  auto / manual
metering mode  average, center-weighted, spot
white balance  
shutter  256s - 1/800s
flash / mode  hot shoe
viewfinder  90° reflex viewfinder w. diopter adjustment
iso ratings  100 - 1600
image size  7304 x 5478
image format  raw (3FR)
image compr.  
lag/cycle times  
remote control  
video options  
audio options  
connectivity  FireWire 800 (IEEE1394b)
storage  CF II, tethered
extra features  sensor size 40.2mm x 53.7mm
Hasselblad H4D-40 links
News, guides, hints & tips
17Feb10 Hasselblad H4D press summary

Hasselblad H4D-40 announcement clippings

The traditional solution for most DSLR cameras has been to equip the camera with a multi-point AF sensor which allows the photographer to fix an off-center focus point. Such multi-point AF solutions are often tedious and inflexible to work with and due to the physics of SLR cameras, the offcenter focus points are all clustered relatively close to the image center. To set focus outside of this center area, you are still forced to focus first, then shift the camera to reframe, with resulting loss of focus as a result.
To overcome this problem, Hasselblad has used modern yaw rate sensor technology to measure angular velocity in an innovative way. The result is the new Absolute Position Lock (APL) processor, which forms the foundation our new True Focus feature. The APL processor accurately logs camera movement during any re-composing, then uses these exact measurements to calculate the necessary focus adjustment, and issues the proper commands to the lens's focus motor so it can compensate.The APL processor computes the advanced positional algorithms and carries out the required focus corrections at such rapid speed that no shutter lag occurs. The H4D's firmware then further refines the focus using the precise data retrieval system found on all HC/HCD lenses.

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