
Provenance & certification
Pextax-A
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Condition assessed 25/1/2026
How we gradeInspector’s condition notes
Lens in like-new condition. The filter thread area has marks that look as if it has been cut, making it impossible to attach a filter. The Optical is pristine with no scratch. Focus and aperture operate as smoothly as on a new lens. Internal components are solid — no internal lens movement sounds. The exterior of the lens body looks like new, but there are 2–3 small paint chips or scratch marks along the edges of the lens barrel or on the focus ring and aperture ring (you need to look closely to notice them).
How this lens renders
Compared to lenses of the same 50mm spec, this f/1.2 Pentax stands out for its exceptionally smooth background separation. With its wide aperture of f/1.2 wide open, the center of the frame is already sharp, while the edges soften slightly. Stopped down to f/2.8, sharpness improves across the full frame and stays at its most stable through the f/8 range. The color tone leans warm, with pleasingly rich saturation. Contrast is moderate, with flexible retention of detail in the highlights and shadows — well suited to color grading. The bokeh is soft and creamy, dissolving the background beautifully in its own distinctive way. This lens's flare has character and gives images a film-like feel. If you'd prefer to avoid flare, I recommend using a lens hood when shooting into backlight. It can also produce vignetting to draw the eye toward the subject (which fades when stopped down). A manual focus prime lens ideal for those who enjoy shooting portraits with a film-like mood. With its solid, durable build quality, it's well worth adding to a collection.
In the box
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Honest disclosure
Pentax Pextax-A
The SMC Pentax-A 50mm f/1.7 is a K-mount standard prime praised for solid metal-and-glass build, standout colour rendition and strong sharpness that peaks at its f/5.6 sweet spot, with flare and wide-open chromatic aberration as its main weaknesses.
