Quick response and operation have been achieved by renewing the entire image processing performance. In addition to Auto Focus, image processing, the operation of Instant Review display has been significantly fastened, comparing to the PENTAX 645D. Also, the large-capacity buffer memory is equipped, and the writing time to the memory card has become less, which help you smoothly take a number of RAW-format images with continuous shooting. These features make it possible to continue releasing the shutter with a comfort that had not been possible on medium-format cameras. The PENTAX 645Z is ideal for portrait and moving subject photography.