Feeds
90%
Pentax 645D

Pentax 645D medium format digital camera

The 40Mp field worker

  • alert
  • submit to reddit

Gartner critical capabilities for enterprise endpoint backup

Timed exposure

While both the autofocus proved responsive and the metering precise – delivering perfectly exposed pictures without need for manual adjustments – the processing speed proved disappointing. The continuous shooting speed is 1.1 frame per second, but the real blow is the painstaking eight seconds the camera takes to write down the files on the memory card and the six or more seconds it takes to display them on the screen.

Pentax 645D

New lenses are rumoured soon, but the 55mm prime is the only calibrated model currently available

Moreover, the latter can arbitrarily increase to tens of seconds for no obvious reason. As annoying as this is it does not actually affect the camera’s ability to keep shooting, as data writing runs in the background without locking up the camera.

The Pentax 645D image quality is every bit what you’d expect from a medium format camera and maybe more. Pictures are pin sharp and show off beautifully rich textures and exceptional colour gradation. Compared to professional DSLRs, the 645D renders much better detail and smoother tonal transition.

Dynamic range is also terrific, with fine detail in both shadows and highlights. The camera offers a Dynamic-Range Expansion option that increases the natural range to maximise detail in critical areas, but it is seldom needed. Other cool features include a lens correction function to compensate for chromatic aberration and barrel distortion. There’s also pixel mapping that detects and shows defective pixels on screen and a good range of custom image modes like the Vintage Reversal Film, that mimics the high saturation and fashionable characteristics of transparencies.

The 645D has a native ISO range from 200 to 1000 but it can be extended to cover 100 to 1600 ISO. The camera handles noise superbly. Not only because it shows a very minimum amount of noise, at even the highest ISO, but mostly because the quality of its noise is aesthetically far more pleasing and usable than most. At top ISO speeds noise is there but there is very little chromatic noise, and image deterioration only occurs in increased grain, which has the typical soft gritty look of high speed films, as opposed to the odious purple and green specs of high speed digital capture.

The one significant weakness of this camera is its lens range. There is not much use in reaching these peaks of resolution if you don’t produce lenses that deliver that pixel power consistently across the sensor. That’s the reason why leading medium format manufacturers invest equally in both camera bodies and quality lens systems that are carefully calibrated for high-standard digital capture.

Pentax 645D

Boost IT visibility and business value

Next page: Glass half full?

More from The Register

next story
Kate Bush: Don't make me HAVE CONTACT with your iPHONE
Can't face sea of wobbling fondle implements. What happened to lighters, eh?
The agony and ecstasy of SteamOS: WHERE ARE MY GAMES?
And yes it does need a fat HDD (or SSD, it's cool with either)
Apple takes blade to 13-inch MacBook Pro with Retina display
Shaves price, not screen on mid-2014 model
iPhone 6 flip tip slips in Aussie's clip: Apple's 'reversible USB' leaks
New plug not compatible with official Type-C, according to fresh rumors
Steve Jobs had BETTER BALLS than Atari, says Apple mouse designer
Xerox? Pff, not even in the same league as His Jobsiness
TV transport tech, part 1: From server to sofa at the touch of a button
You won't believe how much goes into today's telly tech
Apple analyst: fruity firm set to shift 75 million iPhones
We'll have some of whatever he's having please
Apple to build WORLD'S BIGGEST iStore in Dubai
It's not the size of your shiny-shiny...
prev story

Whitepapers

5 things you didn’t know about cloud backup
IT departments are embracing cloud backup, but there’s a lot you need to know before choosing a service provider. Learn all the critical things you need to know.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Rethinking backup and recovery in the modern data center
Combining intelligence, operational analytics, and automation to enable efficient, data-driven IT organizations using the HP ABR approach.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.