The smc Pentax-DA* 55mm f/1.4 SDM lens is a professional prime lens for the Pentax K-mount. It is designed for portrait use[1] with a 35mm equivalent focal length of 82.5mm. The lens features weather sealing, an SDM ultrasonic motor for quiet autofocus, and has 9 rounded diaphragm blades for smoother bokeh. Autofocus speed is similar to an equivalent screwdrive lens.[2]
| Maker | Pentax |
|---|---|
| Technical data | |
| Type | Prime |
| Focal length | 55mm |
| Focal length (35mm equiv.) | 82.5mm |
| Crop factor | 1.5 |
| Aperture (max/min) | f/1.4 / f/22 |
| Close focus distance | 0.45 metres (18 in) |
| Max. magnification | 0.173x |
| Diaphragm blades | 9, rounded |
| Construction | 9 elements in 8 groups |
| Features | |
| Manual focus override |  Yes |
| Ultrasonic motor | Yes |
| Weather-sealing | Yes |
| Unique features | Weather-resistant |
| Application | Portrait |
| Physical | |
| Max. length | 66.0 millimetres (2.60 in) |
| Diameter | 70.5 millimetres (2.78 in) |
| Weight | 375 grams (13.2 oz) |
| Filter diameter | 58mm |
| Accessories | |
| Lens hood | PH-RBH 58mm |
| Case | S90-100 |
| Angle of view | |
| Diagonal | 28.6° |
| History | |
| Introduction | 2008 |
| Retail info | |
| MSRP | $799.95 USD |
References
edit- ^ http://www.dpreview.com/lensreviews/pentax_55_1p4_p15/ DPReview: Pentax smc DA* 55mm 1:1.4 SDM review
- ^ http://www.digitalcamerareview.com/default.asp?newsID=3916&review=pentax+da+55mm DigitalCameraReview: Pentax DA* 55mm f/1.4 SDM Lens Review
External links
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Media related to SMC Pentax-DA* 55mm F1.4 SDM at Wikimedia Commons- SMC Pentax-DA* 55mm f/1.4 SDM
- Bojidar Dimitrov's Pentax K-Mount Page: DA* 55/1.4 SDM
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