Pentax 645d

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The Pentax 645D is a medium-format digital camera introduced in 2010, known for its large sensor and high-resolution output. It features a 40-megapixel CCD sensor sized 44 x 33mm, offering superior image quality compared to typical full-frame DSLRs. The robust magnesium alloy body provides weather-sealing, making it suitable for professional outdoor use. The camera supports Pentax's 645 mount lenses with autofocus and manual focus options. It has a native ISO range of 100-1600, ensuring good performance in varied lighting conditions though with limitations for very low-light photography. The camera uses a 3-inch LCD screen for image preview and has dual SD card slots for expanded storage capability.

The Pentax 645D offers exceptionally high image resolution at 40 megapixels, ideal for large prints and professional photography. Its medium format sensor delivers superior dynamic range and color accuracy compared to smaller sensors. The weather-sealed and durable magnesium alloy construction makes it reliable for fieldwork in challenging environments. Compatibility with high-quality 645 lenses expands creative options for photographers. The camera maintains easy handling with its ergonomic design despite its size. Dual SD card slots allow flexible and secure data storage during shoots.

The Pentax 645D employs a CCD sensor, which limits high ISO performance and results in some noise in low-light images compared to modern CMOS sensors. The autofocus system is comparatively slower and less advanced than contemporary DSLR or mirrorless models. The camera's frame rate is relatively low, around 1.5 frames per second, limiting action or sports photography applications. Lack of video recording capability restricts its use to still photography only. The camera is comparatively heavy and bulky, making it less portable than smaller-format cameras. Its higher price point and niche market focus mean it is less accessible for casual users.

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