K-mount lens roadmap updated

Mistral75 · 02-18-2014, 11:44 PM

Originally posted by IchabodCrane

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.

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

thibs · 02-19-2014, 01:21 AM

Originally posted by D1N0

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 · 02-24-2014, 09:44 AM

Any zooms expected to be faster than F2.8?

Elisabeth · 02-24-2014, 10:11 AM - **1 Like**

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

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

Originally posted by Dave L

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

Hopfully

Alizarine · 02-26-2014, 04:11 AM

Originally posted by KevinE

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 · 02-26-2014, 06:42 AM

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** · 03-18-2014, 04:05 AM

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 · 03-18-2014, 07:09 AM

Originally posted by Pål Jensen

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 · 03-18-2014, 01:25 PM

Originally posted by cali92rs

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** · 03-18-2014, 04:20 PM

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 · 05-16-2014, 06:07 AM

The new 70-200mm DA*?

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

**GlassJunkie** · 05-16-2014, 06:40 AM

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

northcoastgreg · 05-16-2014, 07:25 AM

Originally posted by konraDarnok

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 · 05-16-2014, 08:43 AM

Originally posted by northcoastgreg

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 · 05-16-2014, 08:47 AM

Originally posted by thibs

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.

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02-18-2014, 11:44 PM	#241
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 5,396	Originally posted by IchabodCrane 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. Last edited by Mistral75; 02-18-2014 at 11:50 PM.

02-19-2014, 01:21 AM	#242
thibs Pentaxian Join Date: Jun 2007 Location: Belgium Photos: Albums Posts: 5,802	Originally posted by D1N0 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.

02-24-2014, 09:44 AM	#243
KevinE Junior Member Join Date: May 2012 Posts: 42	Any zooms expected to be faster than F2.8?

02-24-2014, 10:11 AM - 1 Like	#244
Elisabeth New Member Join Date: Jun 2013 Location: Tanumshede Photos: Albums Posts: 8	I ave just got my new 55-300. LOVELY!!!!!!!! ---------- Post added 02-24-14 at 07:12 PM ---------- Originally posted by Dave L Perhaps a higher quality performance than the 18-135. Perhaps faster! Hopfully

02-26-2014, 04:11 AM	#245
Alizarine Veteran Member Join Date: Dec 2010 Location: Manila Photos: Gallery \| Albums Posts: 2,185	Originally posted by KevinE 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.

02-26-2014, 06:42 AM	#246
MJSfoto1956 Veteran Member Join Date: Dec 2013 Location: Boston Posts: 1,289	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

03-18-2014, 04:05 AM	#247
Pål Jensen Site Supporter Join Date: Dec 2007 Location: Norway Photos: Albums Posts: 3,437	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...

03-18-2014, 07:09 AM	#248
cali92rs Veteran Member Join Date: May 2011 Location: Long Beach, CA Posts: 3,351	Originally posted by Pål Jensen 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.

03-18-2014, 01:25 PM	#249
Cannikin Veteran Member Join Date: Mar 2010 Location: SW Washington Posts: 833	Originally posted by cali92rs 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

03-18-2014, 04:20 PM	#250
Dice Site Supporter Join Date: Feb 2008 Location: Richmond, CA Posts: 1,108	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.

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05-16-2014, 06:07 AM	#251
konraDarnok Veteran Member Join Date: Aug 2007 Photos: Albums Posts: 963	The new 70-200mm DA*? ?????AT-X 70-200mm F4 PRO FX VCM-S?????????5?30??? \| ???? \| ????

05-16-2014, 06:40 AM	#252
GlassJunkie Loyal Site Supporter Join Date: Jan 2014 Location: St Petersburg Photos: Albums Posts: 387	Hi.... Not sure. I would think Pentax would not make it less than F2.8.. But I have no idea...

05-16-2014, 07:25 AM	#253
northcoastgreg Pentaxian Join Date: Feb 2010 Location: Eureka, CA Photos: Gallery \| Albums Posts: 3,825	Originally posted by konraDarnok 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.

05-16-2014, 08:43 AM	#254
thibs Pentaxian Join Date: Jun 2007 Location: Belgium Photos: Albums Posts: 5,802	Originally posted by northcoastgreg 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).

05-16-2014, 08:47 AM	#255
cali92rs Veteran Member Join Date: May 2011 Location: Long Beach, CA Posts: 3,351	Originally posted by thibs 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.