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11-10-2013, 02:59 PM   #46
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QuoteOriginally posted by tram57 Quote
I think the Tamron-F Pz-AF MC4 1.4x works with SDM. I have a copy and it works great with all the DA limiteds, the kit lenses, and a Sigma 100-300 F4; all screw drive. This TC has the power zoom connectors that are used to power in lens AF motors. Can anyone confirm?
I bought one on eBay and returned it. It just did not work with several lenses including DA*16-50; Sigma 70-200.

11-15-2013, 07:37 PM   #47
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QuoteOriginally posted by Cannikin Quote
I would wager all future lenses will be HD "red ring" (at least until that coating is superseded).

Hopefully all new lenses will also be WR/DC, though I suspect updates of existing lenses will stay with the original AF (e.g. HD Limiteds, HD 55-300).
I'd wage on the same new HD coating appearing on all but the kit lenses. Same for the DC motor.

The WR is IMHO a different matter, however. It's more complex to add WR on a lens, and it drives the price up, so my guess is, most of the affordable primes and zooms lenses updates or new products won't have WR in them, but all mid-range to pro lenses will. But that's a so-so guess anyways.

As long as Ricoh FINALLY comes up with some F/4 or better, WR ultra-wide prime or zoom lens, I'll be happy. I'm disappointed not seeing such a lens released yet.
11-15-2013, 11:30 PM   #48

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Just an inquiry, are there good quality third-party WR lenses? Thanks.
11-16-2013, 12:00 PM   #49
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None is WR-like, as far as i know.

11-16-2013, 01:57 PM   #50
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I'm not aware of any 3rd party lenses which make any claim to be WR (or "Pentax WR compatible"). The interface between the lens and camera is probably the greatest vulnerability of a WR system so failure would inevitably precipitate a round of finger-pointing
11-16-2013, 03:18 PM   #51
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The Sigma 120-300 Sports is dust and splash-proof but is unfortunately not made for Pentax... which makes me sad


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