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Until very recently, you had to shell out tens of thousands of dollars to get a new digital medium-format camera, and in some cases you'd spend that much on the camera back alone.

Usually the preserve of the professional studio photographer, Pentax has been trying to tempt enthusiast photographers with a medium-format digital camera since the launch of the Pentax 645D in March 2010.

51.4-million-pixel CMOS sensor with no AA filter; Excellent value; used manual-focus 645 lenses available; Cheaper than the medium-format competition

Weighs 1,470g; AF could be a little faster

Pentax 645Z Review - The Pentax 645Z is the most affordable medium-format camera on the market, and with a 51.4MP sensor and lack of an anti-alias filter it should be capable of resolving some stunning detail.

Massive resolution; Relatively affordability of medium-format sensor; Ready availability of affordable second-hand 645 lenses

AF isn't as fast as you might like; No escaping the fact it's a heavy camera

It's safe to say that most people consider medium-format photography confined to high-end professionals or studio photographers with an income and range of supporting kit suited to get the most out of the cameras.

Massive resolution; Relatively affordability of medium-format sensor; Ready availability of affordable second-hand 645 lenses

AF isn't as fast as you might like; No escaping the fact it's a heavy camera

I bought the Pentax 645Z on Adorama about 18 days ago. And I took the camera to Vancouver this past weekend to shoot the Seaplanes on the Bay downtown. I have also owned the Pentax 645D. The biggest improvement over the 645D is that the 645Z reads to the card much faster.

The most advanced and most exciting Pentax DSLR to date has finally arrived. In this review, we will be taking a close look at the Pentax 645Z, a competitively-priced 51-megapixel flagship Pentax designed for professional photographers and craving enthusiasts.

Medium-format cameras offer truly spectacular resolution, but until now, it's always come alongside a difficult compromise. With the Pentax 645Z, that changes. Building on 2010's 645D, the Pentax 645Z offers features that are rare or in some cases unique in a medium-format camera.

Phenomenal resolution and detail; Great high ISO performance; Rugged, weather-sealed body; Huge, bright viewfinder; Fast autofocus works well in low light; Swift performance for a medium-format camera; Good battery life; Shoots Full HD video, Phenomenal resolution and detail, Excellent prints beyond...

Quite bulky compared to an APS-C or full-frame DSLR; Autofocus points clustered near center of frame; Most lenses aren't weather-sealed or optimized for digital; Prone to aliasing artifacts (but so are most high-end cameras these days); Attracts a lot of attention from passers-by, Quite bulky (but...

Let's face it, there aren't many of us out there who can afford to blow ￡7,699 on a camera and lens, but believe it or not, the 51.4MP Pentax 645Z is an absolute steal at this price.

Although the Pentax 645Z medium format DSLR has been out for a few years, I only had a chance to try it out earlier this year, during my trip to Death Valley. I have been wanting to try the 645Z for quite some time, since I heard so many good things about it.