HD Pentax-D FA 70-210mm F4 ED SDM WR

Specifications

The HD Pentax-D FA 70-210mm F4 ED SDM WR carries a long list of acronyms. Below is an explanation of various terms pertinent to this lens:

HD

"HD", is the name of the current most advanced coatings available for Pentax lenses. Building on the famous SMC coatings, it improves contrast and flare management.

D FA

"D FA" refers to a lens designed for full frame digital cameras.  The lens carries information used for specific program lines, in-camera lens corrections, and so forth. It is also fully usable with APS-C sensors.

F

"F" is the maximum aperture of the lens, 4 in this case.

ED

"ED" means that the lens uses extra low dispersion elements to improve optical performances.

SDM

"SDMmeans Supersonic Direct-drive motorAs per RICOH the SDM autofocus motor in the 70-210mm is of a new generation.

WR

"WR" means the the lens is weather resistant. It cannot be submerged but will resist splashes, rain, snow, dust, and other adverse conditions.

SP

"SP" is not part of the lens name, but still an important part of its characteristics. Super Protect is a type of coating used by Pentax that helps repel dust and grease on the front element, making the lens easier to clean.

Below are the lens specifications.

Lens Name

HD Pentax-D FA 70-210mm F4 ED SDM WR

Optical Formula

20 elements in 14 groups (three ED element)

Image Circle 35mm (Full frame)
Auto-Exposure Support Yes
Construction Plastic
Field of View

Diagonal / Horizontal

APS-C: 23-7.7 ° / 19.5-6.5 °
Full frame: 34.3-11.8 ° / 28.8-9.8 °

Aperture Range F4 - F32
Aperture Blades 9 (rounded)
Aperture Ring No
Max. Magnification 0.32x
Focus Type AF, SDM, quick-shift, focus limiter
Minimum Focusing Distance 95 cm
Internal Focus  Yes
Filter Thread Diameter 67mm
Cap Yes, clip-on
Hood Yes, bayonet (petal-shaped), PH-RBP67
Case Optional, S100-200
Diameter x Length 8.5 x 175 mm (3.1 x 6.9 inches)
Weight 819 g (hood : 40g)
Pentax Mount Designation KAF4
Weather Sealing Yes
Price (US MSRP)

$1096.95

Launch Date

2020


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