Lenses -> Pentax 50-135mm F2.8 DA* ED SDM Lens
The Pentax DA * 50-135mm F2.8 ED (IF) telephoto zoom lens is designed for exclusive use with Pentax digital SLR cameras, delivering the highest level of ultimate optical image quality. With aspherical elements, special optical-glass elements and original lens coatings, this lens is superior in terms of contrast, clarity and edge-to-edge sharpness. The 50-135mm features tightly sealed, weather-resistant and dust-resistant construction to enhance durability for use in rain or dusty conditions. A new SDM system has been incorporated for smoother, quieter autofocusing operation using a built-in supersonic motor.
|Specification / Feature||Value||Scores *||Rank **|
|Number of Lens Groups||14|
|Number of Lens Elements||18|
|Optical Zoom ||2.70||8.01||51|
|Max Aperture ||2.8||77.96||17|
|Max Aperture Wide ||2.8||77.96||17|
|Max Aperture Tele ||2.8||49.27||17|
|Focal Length Wide ||50 (or 75 in full frame equiv.)||48.56||55|
|Focal Length Tele ||135 (or 202.5 in full frame equiv.)||71.41||21|
|Min Aperture ||22|
|Magnification Ratio ||0.17x||2.42||30|
|Min Focus Distance ||1m||85.84||51|
|Aperture Blades ||9||25.81||7|
|Autofocus Motor ||SDM|
|Sensor Format ||APS-C|
|1st/3rd Party ||1st party|
|Lens Type ||Telephoto Zoom|
|Image Stabilisation ||No|
|Video Lens ||No|
|Tilt Shift ||No|
|Weather Resistant ||Yes|
|Filter Thread Size (mm) ||67mm|
|Size (DxL) ||0mm|
|Lens Mount ||Pentax K (DA)|
|UK Price ||£892.00 at Wex Photo Video (affiliate link)||36.49||262|
* - Scores are calculated by comparing numerical specifications with other cameras. The highest ranking camera for a specification acheives a score of 100. The lowest ranking camera is scored as 0 and all the other cameras are scored in between 0 and 100 according to their merit.
** - Rank is calculated by ordering the scores for all cameras in descending order. The best scoring camera for a particular feature / specification will have a rank of 1.
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