HD Pentax-D FA 24-70mm F2.8 ED SDM WR Announced
Standard zoom lens for the Pentax Full Frame DSLR
By PF Staff in Pentax Announcements on Sep 24, 2015
Pentax's suite of dedicated full-frame lenses grows with today's announcement of the HD Pentax-D FA 24-70mm F2.8 ED SDM WR, a fast weather-sealed standard zoom. Covering focal lengths from wide angle to long normal, the 24-70mm will be the go-to premium walkaround lens for the upcoming full frame. While not developed for use with APS-C bodies, the lens is of course fully compatible with existing K-mount cameras and would offer a field of view ranging from wide normal to short telephoto.
The new lens comes packed with Pentax's latest technologies, including HD coating, SDM autofocus, quick shift manual focus override, and weather sealing. From a cosmetic point of view, the 24-70mm is styled similarly to the 150-450mm and 70-200mm zooms with a minimalistic barrel. It has a front-mounted zoom ring and a smaller focusing ring directly behind it, along with a distance scale.
Pentax's D FA lens series denotes full-frame lenses optimized for digital cameras. This series is the counterpart to DA lenses, which are crop lenses designed for APS-C sensors.
Per the latest Pentax lens roadmap, two more full-frame zooms a planned in the near future: a longer standard zoom such as a 28-105mm, and a wide-angle zoom such as a 15-30mm. This will bring the number of current D FA (FF-compatible) lenses to at least 7, one of which will inevitably be used as a kit lens.
The D FA 24-70mm F2.8 is expected to hit the shelves at the end of October at a retail price of US $1299 (£1149 including VAT in the UK). Canon and Nikon first-party lenses in this class are priced between $1799 and $2399 in the US, whereas current third-party lenses such as the Sigma 24-70mm and Tamron 24-70mm (no longer available and never launched for Pentax, respectively) range from $799 to $1299.
Similarity to the Tamron 24-70mm F2.8
This announcement could be an indication of a continued behind-the-scenes partnership between Ricoh Imaging and Tamron. The newly-announced Pentax 24-70mm bears a stark resemblance to the existing Tamron 24-70mm, not only from a physical point of view, but also in terms of optical and mechanical specifications. Like the Pentax lens, the Tamron (available for Canon and Nikon) is weather-sealed and has 17 elements in 12 groups.
In the existing Pentax lens lineup, the DA 18-270mm is essentially a rebadged Tamron lens. The superzoom cooperation with Tamron dates back to the late film era with lenses such as the DA 18-250mm and FA 28-105mm F4-5.6.
See below for a physical comparison of the Pentax and Tamron 24-70mm lenses:
Read on for additional product photos, full specifications, MTF charts, and the press release.
- 2015 Pentax lens roadmaps
- D FA 150-450mm review
- D FA 150-450mm and D FA* 70-200mm announcement
- Pentax full frame teaser
- Pentax full frame DSLR CP+ announcement
- Pentax lens database
- Full frame forum
Click on any thumbnail to enlarge.
Below are the official specifications for the 24-70mm lens.
HD Pentax-D FA 24-70mm F2.8 ED SDM WR
17 elements in 12 groups
|Image Circle||Covers the 24x36mm format (full frame)|
|Field of View (Diagonal)
||Full Frame: 84-34.5°
|Aperture Range||F2.8 - F22|
|Aperture Blades||9 (rounded)|
|Focus Type||Autofocus (SDM only)|
|Minimum Focusing Distance||0.38 m (1.25 ft)|
|Filter Thread Diameter||82mm|
|Cap||O-LC82 (clip-on, included)|
|Hood||PH-RBD82 (plastic petal type, included)|
|Diameter x Length||88.5 x 109.5 mm (3.5 x 4.3 in)|
|Weight||787g (27.8 oz.)
812g (28.6 oz.)
|Pentax Mount Designation||KAF3|
|Launch Price (US MSRP)||$1299|
Some (purely speculative) rumors claim that the Pentax full frame will not feature screwdrive autofocus. We believe that the camera will have an AF motor in order to support existing FA and D FA lenses with screwdrive. Furthermore, since the 24-70mm is based on an SDM-only Tamron lens, the release of this lens cannot be used as evidence against the presence of screwdrive AF in the upcoming camera.
Click on any chart to enlarge.
Will you be getting this lens along with the full frame? Share your thoughts in the comments below.