Review Lens: Pentax smc DA Star 55mm F1.4 SDM

Lens Overview - Pentax smc DA Star 55mm F1.4

The Pentax 55mm f/1.4 DA* SDM Autofocus Lens is a compact and bright short-telephoto lens of the highest order, made exclusively for Pentax digital SLR cameras.  In a stocky housing ready for harsh conditions, you'll get a bright f/1.4 aperture-worlds away from the experience you're used to with more common zooms-that opens up new creative doors to you as a photographer.

This lens was born to shoot between f/1.4 and f/2.8, and comes with a 9-bladed aperture diaphragm which shows up as perfectly round when you stay between f/1.4-2.8.  Shoot dramatic portraits with bright point light sources behind the subject, and you'll be dazzled with lovely diffuse, circular out-of-focus highlights that make everybody look better.  Beyond portraits, this lens works well any time you would use a moderate telephoto focal length.

The focusing system of this lens is SDM only; there is no screw on the rear of the lens barrel to have the AF driven by a body-based motor.  This allows the lens to move incredibly quick, driven by an internal motor and with the Quick-Shift system providing manual override capacity to you any time you want it with no buttons to switch; but you'll need a Pentax body which allows SDM autofocus (all current Pentax bodies support SDM, but the *IST series does not).

Note:
Does NOT provide autofocus upon non-SDM-enabled Pentax cameras.
Brilliantly-sharp portrait lens which gathers plenty of light
Completely-rounded aperture diaphragm from f/1.4-2.8 for beautiful out-of-focus highlights
Speedy SDM autofocus motor provides fast, silent response with Quick-Shift full-time manual override
Pentax's unique SP water and dirt-repelling coating on both external surfaces
Pentax's "Aero Bright" internal lens yields high transmissivity and reduced flare
Dust and moisture-resistant housing
Essentially equivalent to an 82.5mm f/1.4 lens upon 35mm SLR cameras
UPC: 027075147348

Pentax smc DA Star 55mm F1.4 Latest Price



Focal Length55mm (35mm Equivalent Focal Length: 82.5mm)
Maximum Aperturef/1.4
Minimum Aperturef/22
Lens MountPentax K
Format CompatibilityAPS-C
Angle of View28.6°
Minimum Focus Distance1.48' / 45 cm
Maximum Magnification0.17x
Optical Design9 Elements in 8 Groups
Diaphragm Blades9
Focus TypeAutofocus
Image StabilizationNone
Filter Size58 mm (Front)
Dimensions (ø x L)2.8 x 2.6" / 7.11 x 6.6 cm
Weight13.23 oz / 375 g

Photos Example - Pentax smc DA Star 55mm F1.4

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Olympus M.ZUIKO DIGITAL ED 17mm F1.2 PRO $780 $1200 2017Olympus Superwide
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Mitakon Speedmaster 85mm f/1.2 Nikon $519 $799 2015Mitakon Medium - Telephoto
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Mitakon Speedmaster 85mm f/1.2 Canon $519 $799 2015Mitakon Medium - Telephoto
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Mitakon 42.5mm f/1.2 Sony E $233 $359 2014Mitakon Medium
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Mitakon 42.5mm f/1.2 Fujifilm X $233 $359 2014Mitakon Medium
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Mitakon Speedmaster 85mm f/1.2 Pentax $519 $799 2015Mitakon Medium - Telephoto
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Samyang 35mm F1.2 ED AS UMC CS Micro 4/3 Save 30% 2016Samyang Wide - Medium
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Samyang XP 50mm F1.2 Canon $618 $950 2018Samyang Medium
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Fujifilm FUJINON XF 56mm F1.2 R $650 $1000 2014Fujifilm Medium
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Nikon 1 NIKKOR 32mm f/1.2 $585 $900 2012Nikon Wide
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Canon RF 50mm f/1.2L USM $1495 $2300 2018Canon Medium
Hybrid
22 MP
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0.2
2.95

Lens Technical

Pentax smc DA Star 55mm F1.4 SDMSigma 105mm F1.4 DG HSM ASigma 105mm F1.4 DG HSM A Sigma
Name Pentax smc DA Star 55mm F1.4 SDMSigma 105mm F1.4 DG HSM A Sony FESigma 105mm F1.4 DG HSM A Sigma
Max Aperture At Min Focal f/1.4f/1.4f/1.4
Year 200820182018
Mount Type Pentax KAFSony FESigma SA
Lens Type Lens MediumLens TelephotoLens Telephoto
Auto Focus NoNoNo
Price $640
Lens Zoom PrimePrimePrime
Lens Range 55105105
Global 26.7041
Effective Mega Pixel 10.6021
Distorsion 0.194
Vignetting -0.826185
Tstop 1.77848
Ac 8.06373
Vignetting Ranking 5540
Tstop Ranking 1325
Ac Ranking 5613
Pixel Depth 24
Price Sensor 1300
Sensor Raw 24.51
Sensor Format Sensor Apsc
Type SemiProDSLR
Zoom Factor 111
Weight 1lb1lb1lb
Macro NoNoNo
Launch Date Sep. 2008Feb. 2018Feb. 2018
Brand PentaxSigmaSigma


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