[Mistral75]

I(...)

Pentax/Ricoh have a real potential competitive advantage in digital FF. They are the only company that's likely to develop a FF DSLR that provides image stabilization for millions of legacy FF lenses.

Sony has more or less the same competitive advantage but their Alpha 900/850 wasn't exactly a success in spite of being as cheap as it gets (Alpha 850 was launched at less than €2,000 in Europe) and enjoying a superb viewfinder.

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Last edited by Mistral75; 02-18-2014 at 11:50 PM.

[thibs]

Cheaper FF sensors have been available for less than a year. It is not just about pixel iq but also about DOF characteristis. FF Sensor will become cheaper when the move from 12" to 18" wafers is made. Al lot more sensors will be made per production cycle.

Yep but AFAICT the transition to 18" has been pushed back for a while.

[KevinE]

Any zooms expected to be faster than F2.8?

[Elisabeth]

I ave just got my new 55-300. LOVELY!!!!!!!!

---------- Post added 02-24-14 at 07:12 PM ----------

Perhaps a higher quality performance than the 18-135. Perhaps faster!

Hopfully

[Alizarine]

Any zooms expected to be faster than F2.8?

Most likely no... any faster than f2.8 and expect the size and bulk of the lens increase significantly. Can't imagine how big the DA* 60-250 would be if it were f2.8.
Even the Sigma 18-35 f1.8 was unprecedented.

[MJSfoto1956]

I'm conflicted about the Sigma 18-35mm f/1.8. Basically on the K-3 it should (in theory) provide similar IQ and bokeh as a D610 + 24-70mm f/2.8 which is a remarkable achievement. But it weighs nearly as much and is about the same size, so I'm scratching my head and wondering why anyone who already owned a full-frame body would even consider this? (clearly this lens is marketed to dedicated crop-sensor owners but many of us either already have or plan to have full-frame cameras as part of our kits). I probably won't purchase this lens preferring small, lightweight primes or the incomparable DA* 60-250mm.

Michael

[Pål Jensen]

The Sigma is about one stop faster and fast lenses are primarilty bought in order to be better able to shoot in low light.
Bokeh is actually not the same as DOF. The lenses you mention won't have the same DOF range, minimum DOF or the same maximum magnification.
The Sigma will probably flare horribly though...

[cali92rs]

The Sigma will probably flare horribly though...

Do you have anything that shows that this will "flare horrible"? From all the reviews i have seen, flare is generally well controlled.

[Cannikin]

Do you have anything that shows that this will "flare horrible"? From all the reviews i have seen, flare is generally well controlled.

Sigma A 18-35 mm f/1.8 DC HSM review - Ghosting and flares - Lenstip.com

[Dice]

There are images in the Lens Club showing a couple of examples. While I wouldn't characterize it as horrible, it does appear to be a lens you have to be careful about where the sun is.

[konraDarnok]

The new 70-200mm DA*?

?????AT-X 70-200mm F4 PRO FX VCM-S?????????5?30??? | ???? | ????

[GlassJunkie]

Hi.... Not sure. I would think Pentax would not make it less than F2.8.. But I have no idea...

[northcoastgreg]

The new 70-200mm DA*? ?????AT-X 70-200mm F4 PRO FX VCM-S?????????5?30??? | ???? | ????

First of all, it's not listed as a DA* lens, but merely a "star" lens without a prefix. And since the DA 60-250 is f4, why would Pentax release an f4 version of the 70-200? It seems to me that this 70-200 is a FF lens released early for use with APS-C cameras. Pentax is killing two birds with one stone: filling a gap in the APS-C lineup while developing a lens for their future FF camera at the same time.

[thibs]

First of all, it's not listed as a DA* lens, but merely a "star" lens without a prefix. And since the DA 60-250 is f4, why would Pentax release an f4 version of the 70-200? It seems to me that this 70-200 is a FF lens released early for use with APS-C cameras. Pentax is killing two birds with one stone: filling a gap in the APS-C lineup while developing a lens for their future FF camera at the same time.

First, AFAIK, Tokina and Pentax have NO realtion at all anymore.
Second, what would Pentax do with an IS optic ? (VCM from Tokina is optical stabilization).

[cali92rs]

Second, what would Pentax do with an IS optic ? (VCM from Tokina is optical stabilization).

Plenty of people use Sigma OS lenses. You just turn off the in-body SR.
The in-lens OS is more effective for longer lenses anyway.