Originally posted by MJKoski IMHO comparing modern lens coatings is every bit as useless as comparing modern foam filled running shoes. Adidas vs Nike results do not matter if one is not physically fit to run the run.
I will shield my lenses when there is need be they non-coated or X-brand coated. This works with small format and works with large format. Running amok with no lenshood and The Best Ever -coating is always going to be the inferior choice.
Better have something else than mere coating to make up for the price difference. Locally new Tamron 15-30 costs under 1k and Penron 1700. Tamron 70-210/4 costs under 800 and Penron 70-210/4 1299.
If the 24-70 and 70-210 follow the same pattern as 15-30, they are 1:1 inside. I put one Penron 15-30 to pieces and found no real differences to Tamron teardown done by LensRentals.
Both Tamron and Penron 15-30 lenses will fog up inside when using them in sleet and snow for few hours. Pentax version should have at least AW level protection to make up for the high price. QC wise they are also the same story, I scored two brand new factory sealed decentered 15-30 Penron lenses in a row last October.
This is not bashing anything, just expecting for something extra for the extra money.
I have every right to expect usefull Pentax designed brand lenses after purchasing a total of five K-1 bodies (sold one and bricked one). I need Pentax bodies and their features for my projects, so no, I will not switch to CaSoNikon or FujiSonic again for no benefit.
I posted a link showing that the Tamron coating used on the 70-210 is inferior to the Pentax HD coating. That likely isn't Tamron's best coating (AX or how they're calling it), but neither is the HD (that would be ABC II).
Also, the HD coating is superior to SMC. This was proven, not merely claimed.
The Pentax version of the 70-210 is different than the Tamron - it has a focus limiter and internal baffles.
AW'ing a lens implies extensive changes to its barrel. There would be no point in a rebrand then.
You have no right to bash Pentax. You're not a terrorist keeping Pentax hostage and demanding a hefty ransom; you are a customer.