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. With medium format digital being traditionally out of reach in terms of cost for most photographers out there, including myself, I did not really have much interest in trying out cameras that are as expensive as some nice cars. However, the Pentax 645D changed the game back in 2010, by being the first sub-$10K medium format digital camera at launch.
The Pentax 645Z was announced more than two years ago, back in April of 2014. As I have already pointed out, it was a big announcement back at the time, since there was no real competitor to the camera at a similar price point. The 645Z reigned supreme since then, making it a popular MF camera among Pentax enthusiasts and professionals. With over 30 different lenses to choose from for the 645 mount (16 of which are current and can be bought new today) and the ability to mount older Pentax 6×7 lenses via adapters (along with other third party options), it has become a pretty solid and mature system overall.
With a 51.4 MP sensor, the Pentax 645Z boasts more resolution than any other full-frame digital camera on the market (the closest in resolution is the Canon 5DS / 5DS R DSLR, with its 50.6 MP sensor). However, as you may already know, resolution plays a small part in the overall image quality of any system – sensor size is a far more important part of the equation. Larger sensors generally have better overall image quality due to better handling of noise, potentially better dynamic range, better colors and with the right set of lenses, can produce beautifully rendered photographs. Sensor size certainly does matter, but the question is, how much of a difference would there be between sensors, and can one actually tell the difference in image quality between different formats? Let’s take a look at the below illustration:
https://www.youtube.com/watch?v=gYTwK5Hzi5k
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