Pentax 645z is the latest entry in the digital medium format camera world from Ricoh Imaging and it is available at a reasonable price when compared to the pricier Phase One IQ250. Pentax has good experience with consumer DSLR and the company has been able to offer a bigger ISO range along with better AF system, faster video recording capabilities, and better burst rates, when compared to the Phase One. It is also very consumer friendly and will be available for users in May 2014. On the other hand, the Phase One IQ250 is the first of the medium format backs coming with a CMOS sensor that is available for sale and offers an excellent image quality, but it is also quite pricey.
Phase One has a modular design and is compatible with several camera systems. It has a sturdy build and an excellent 50 MP sensor with 6400 ISO capabilities. It is also integrated with Wi-Fi and has a wireless shooting control as well as image review. The design is very versatile and it is removable, so you can attach it to various other camera systems. The CMOS design offers a Live View. However, it is very expensive and does not offer support for video.
The Pentax 645z has many features in common with the flagship APS C DSLR from Ricoh and has inherited several interesting features. However, the most significant feature is the 51 MP CMOS sensor with a Prime III processor and a 27 point SAFOX, with 86,000 pixels RGBs meter systems, offering it a great sensitivity range for a medium format camera.
Pentax 645 – Superior Specs
The basic difference between Phase One IQ250 and Pentax 645 is that the Pentax 645 is a complete Camera unit, whereas the Phase One is only a digital Back camera. Looking at some basic features of the two cameras and comparing them, we can see that the Pentax 645z has the higher resolution of 51.4 MP compared to the 50 MP of the Phase One. As for the sensor, the Phase One is superior in this feature with a sensor of 44 x 33 mm CMOS, whereas the Pentax also has a CMOS sensor of 43.8 x 32.9 mm. The pixel size in both the cameras is the same at 5.3.
However, the ISO range of the Pentax is way better at 100 to a maximum limit of 204800, whereas that of the Phase One is 100 to 6400 only. The capture rate of the Pentax is also better at three shots per second compared to 1.2 shots per second in case of the Phase One. Shutter speed for the Pentax is 1/4000 seconds to 30 seconds, whereas that of the Phase One is 1/10000 second to 60 minutes. Both the cameras have the same size for their display screens, at 3.2 inches, but the Pentax has an LCD screen with a ration of 3:2 and 1,037,000 dots, whereas the Phase One has a TFT display touch screen.
Both the cameras have a medium format sensor from Sony, but the Pentax is able to get a much higher ISO range. Another advantage with the Pentax is the Phase AF system with a 27AF sensor along with a 25 cross sensor. The Pentax also has the ability of recording full high-definition video of 1920 x 1080 p and it is able to take 4K in the interval mode. In addition, when comparing the prices of the two cameras, the Pentax is much cheaper at $8,496 whereas the Phase One can be bought at around $34,990. The Pentax can offer better core specs and at an affordable price, so if you are looking to save money you can go with the Pentax, but the Pentax will not offer you the versatility of the Phase One, which has a modular design and a removable back.
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