Rumors: two Pentax full-frame teleconverters to be announced soon


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Posted by Asahi man on Pentax Forums a while back:
Both new converters are fullframe and with all AF systems compatible.
But still no exact shipping date.
Still in late prototype condition.
Maybe because of the new tele lenses.​



The most surprising part of his statement is the end of it: “because of the new tele lenses”. There are two tele-zoom lenses on the roadmap: the HD Pentax-D FA 70-200mm f/4 and a “Telephoto Zoom Lens” (a D FA, not a D FA★ since it’s represented by a red line and not an orange one). The line representing the focal range of the Telephoto Zoom Lens + the D FA categorization suggests that it could be a 70-300mm f/4-5.6. There are no telephoto prime lenses on the roadmap other than the D FA★ 85mm f/1.4 which isn’t exactly a lens suited for converters. Among those three telephoto lenses on the roadmap, only the 70-200 mm f/4 would be suited for teleconverters, barely so for a 1.7x or 2x converter. Yet Asahi man speaks of “new tele lenses”, plural.

Is it a typo? Have there been modifications to the specifications of the Telephoto Zoom Lens during its development? Shall we expect a revamping of the DA★ 200mm f/2.8 ED [IF] SDM and/or of the DA★ 300mm f/4 ED [IF] SDM as HD Pentax-D FA★ 200mm f/2.8 or HD Pentax-D FA★ 300mm f/4 (with HD coating, new focus motor and more)? Shall we expect a new D FA★ 200mm f/2.8 and/or a new D FA★ 300mm f/4? Indeed a patent was published in 2016 (JP 2016-051100 A), which includes six examples: four of a 200mm f/2.8, one of a 230mm f/3.2 and one of a 300mm f/4, all of them covering the 24×36 format.


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