I've used Pentax for the last 60 years. The original reason was cost at the time of my first purchase. Since then the investment in lenses kept me buying Pentax's (even though it took them forever to convert from screw to bayonet mount (which really pissed me off)). The image quality was fine for what I wanted (primarily outdoor scenes). I converted to digital Pentax's when the image quality was equal to 35mm slides.
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