The Pentax SMC DA* 55mm f/1.4 SDM is a high-quality, fast-aperture prime lens designed for crop-frame Pentax DSLRs. Key features include:
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Great for portraiture and low-light shooting
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Fast, silent autofocus with full-time manual override
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Durable, weather-sealed construction
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Excellent value
Fast-Aperture Portrait Lens. With an effective focal length of 83mm after sensor-crop factor, the SMC DA* 55mm is an ideal choice for portraiture. The fast f/1.4 aperture allows plenty of subject-background separation, which also makes it great for low-light shooting.
SDM Focusing Motor. Provides fast, silent autofocus performance with compatible Pentax DSLRs (all of ours are). Additionally, it offers full-time manual override for quick adjustments.
Pentax DA Series. Since it’s designed for crop-frame APS-C sized sensors, it offers a reduced physical size and weight. It features DA*-series’ standard fully weather-sealed build, with Pentax’s Super Protect coating for a dust- and water-resistant front element.
| Angle of View |
28.6° |
| Aperture |
f/1.4-22 |
| Autofocus |
Autofocus |
| Brand |
Pentax |
| Compatibility |
Crop |
| Diameter |
2.8″ |
| Dimensions |
Length: 2.6″ |
| Filter Size |
58.0mm (non-rotating front element) |
| Filter Style |
non-rotating front element |
| Focal Length |
55.0-55.0 |
| Focusing System |
Internal, SDM motor, full-time manual |
| Groups/Elements |
8/9 |
| Hood Included |
Yes |
| Image Stabilization |
No |
| Item Type |
Lens |
| Lens Type |
Normal Range |
| Low Dispersion Elements |
1 |
| Max Aperture |
1.4 |
| Maximum Magnification |
0.17x |
| Minimum Aperture |
22.0 |
| Minimum Focusing Distance |
1.48feet |
| Mount |
Pentax K |
| Weather Resistant |
Yes |
| Weight |
0.83 lb. |
| Zoom Method |
N/A |











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