Key Features
- Exclusively for
- SDM
- Body AF
- Dust and Weather resistant
- Quick-Shift Focus
- Aero Bright Coating
- SP Lens Coating
- 9-bladed Round Iris Diaphragm
Pentax smc DA 55mm 1.4 SDM Lens Summary
With a standard focal length, but excellent in quality, the Pentax smc DA 55mm 1.4 SDM for digital SLR cameras is incredibly fast and offers outstanding depth of field control. With its weather-resistant construction, it’s versatile enough for all types of shooting conditions and subjects, including portrait, still life, low light photography and weddings.
Pentax smc DA 55mm 1.4 SDM Lens In more detail
This Pentax smc DA 55mm 1.4 SDM Lens features high resolution for sharp, crystal-clear images of subjects and a smoothly connected out-of-focus (bokeh) softness. This is a medium telephoto lens that is ideal for portraits. The lens uses Anomalous Dispersion Glass for reducing colour blurring and enabling images with high contrast and sharpness. It also uses the “Aero Bright Coating,” which features higher transmissivity than conventional coatings for delivering high image quality with unparalleled sharpness and a minimum of flare. The lens uses a round iris diaphragm for providing natural out-of-focus (bokeh) effect and has a dust-resistant and drip-proof construction. The AF system is for SDM (AF using internal lens ultrasonic motor) only.
Focal length equivalent to 84.5mm in 35mm film format
This is a medium telephoto single focal point lens equivalent to 84.5mm in the 35mm film format, and it includes a large aperture with an extremely bright open F value of 1.4. This lens is ideal for portrait and other photography.
Aero Bright Coating
The newly developed Aero Bright Coating provides exceptional reflection performance over a wide wavelength range. This enables a significantly higher transmissivity for a substantial reduction in flare and ghosting, which adversely affect imaging performance.
Natural, soft out-of-focus bokeh effect
The newest optical design and a round iris diaphragm (up to F2.8) were developed with special attention to providing a natural, soft out-of-focus (bokeh) effect with a shallow depth of field that is only possible with large aperture lenses.
Dust-resistant and drip-proof construction
The various lens components have been sealed for enabling a dust-resistant and drip-proof construction that prevents the entry of water and dust into the lens.
Quick-Shift Focus System
If you turn the focus ring after focusing by the AF, focusing instantly switches to the manual focus. This enables smooth focusing operations without the need for a switching operation.
SP (super protect) coating
A special coating is used on the front lens for repelling water and oils. This enables any water and oils on the lens to be easily removed for effective protection of the lens surface.
Design developed specifically for digital SLR cameras
This design has been optimised for digital image characteristics to minimise ghosting and flare. Also, the image circle is tailored specifically to the size of the imaging elements for allowing a compact, lightweight body size for a large aperture .
Pentax smc DA 55mm 1.4 SDM Lens Specifications
| Type | Telephoto |
| Focal length (Equivalent to 35mm format) | 55mm(84.5mm) |
| Maximum aperture | F1.4 |
| Minimum aperture | F22 |
| Angle of View | 28.6° |
| Lens construction | 9 elements / 8 groups |
| No. of diaphragm blades | 9 |
| Closest focusing distance | 0.45m |
| Maximum reproduction ratio | 0.173x |
| Filter size | 58mm |
| Diameter x length | 70.5 x 66 mm |
| Weight | 375g |
What’s in the Box
| Offers: N/A |
| Offer Category: Camera Lenses |
| Offer Product Type: Pentax Lenses K mount |
| Autofocus: Yes |
| Aperture ring: N/A |
| Constant Aperture: Yes |
| Lens CIPA Image stabilization rating: N/A |
| Colour: N/A |
| Diameter (mm): 70 |
| Length (mm): 66 |
| Weight (g): 375 |
| Distance scale: Yes |
| DoF scale: Yes |
| Elements: 9 |
| Environmental Sealing: N/A |
| Focus distance limiter: N/A |
| Focal length: 55 mm |
| Focus method: N/A |
| Filter Thread: N/A |
| Full time manual: Yes |
| Groups: 8 |
| Hood supplied: Yes |
| Lens Image stabilization: N/A |
| Lens mount: N/A |
| Lens Materials: N/A |
| Maximum focal length: 55 |
| Maximum magnification: 0.17 |
| Maximum aperture (number): 1.4 |
| Maximum aperture (text): N/A |
| Max Format size: N/A |
| Minimum focal length: 55 |
| Lens Minimum focus distance (m): 0.45 |
| Minimum aperture (number): 22 |
| Minimum aperture (text): N/A |
| Motor type: N/A |
| Number of diaphragm blades: 9 |
| Power zoom: N/A |
| Special elements / coatings: N/A |
| Tripod collar: N/A |
| Lens type: N/A |
| Wide/Tele: N/A |
| Lens Level: N/A |
| Best For: N/A |
| Best For Holiday and Landscape: Yes |
| Best For Interior and Architecture: N/A |
| Best For Fashion and Portrait: Yes |
| Best For Macro and Still Life: Yes |
| Best For Astro: N/A |
| Best For Street: Yes |
| Best For Wildlife and Sport: N/A |
| Zoom lock: N/A |
| Zoom method: N/A |
| Notes: N/A |














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