D FA 24-70mm F2.8 ED SDM WR Officially Announced

**Digitalis** · 09-25-2015, 11:01 PM

Originally posted by Zygonyx

Don't think so... rather a CA eliminator

Is that an attempt at sarcasm?

Class A · 09-26-2015, 12:30 AM - **2 Likes**

Originally posted by monochrome

Oh for pity's sake - some people complain when Pentax rebadges a lens and asks more money for it just because the ring is green. Other people complain when they don't.

And some people complain about the complainers...

gorme · 09-26-2015, 12:38 AM

Originally posted by Digitalis

Is that an attempt at sarcasm?

I would say rather Flare/Ghost eliminator... It is rear the last element which is not the pupil of the optical system so no problem with the bokeh.

kenspo · 09-26-2015, 02:33 AM

More to come

(Dont know exactly when they will launch).

JPT · 09-26-2015, 02:50 AM

Originally posted by kenspo

More to come

(Dont know exactly when they will launch).

From what you're hearing, does it sound like everything else is on hold for the full frame? I mean they seem to have lost momentum with Q, 645 and compacts this year. I hope they don't sacrifice the areas where they have had some success in the past pursuing the dream of full frame.

Zygonyx · 09-26-2015, 03:49 AM

Originally posted by Digitalis

Is that an attempt at sarcasm?

Gorme meant actually better what i intended to say.

robjmitchell · 09-26-2015, 04:02 AM

Originally posted by lytrytyr

Where is that?

Page 10, thread post 144. The second aspherical element is singled out as being different to the other aspherical elements in the pentax model, but not in the tamron. not concrete of course.

kenspo · 09-26-2015, 04:11 AM - **1 Like**

It IS a rebuild from Tamron. So no point in that discussion

mee · 09-26-2015, 05:45 AM

We know of the ~28-105ish zoom and the 15-30ish zoom.. but I wonder if there are any more lenses beyond this planned between now and FF launch?

kenspo · 09-26-2015, 06:00 AM

Yes, but not before 2016.

lytrytyr · 09-26-2015, 07:20 AM

Originally posted by robjmitchell

Page 10, thread post 144. The second aspherical element is singled out as being different to the other aspherical elements in the pentax model, but not in the tamron. not concrete of course.

It doesn't help when these diagrams are offered more for marketing than for serious information,
but it seems that the AD glass-molded element is also present as such on the Tamron A007.
As @northcoastgreg posted in #140 here,
the Pentax and Tamron marketers are just highlighting different aspects.

Val.Ou · 09-26-2015, 08:03 AM

It appears that the 24-70/2,8 Pentax and 24-70/2,8 Tamron have the same optical formula. Consequenty we can think that the Pentax is a rebadged Tamron.
But the choice of special optical glasses and their repartition are different.
If we stick up a number on each lens, starting from the front lens,
in the Tamron we have
4 aspherical lenses: the 3, 8,11 and 15 (the 3 is an hybrid lens, other three are molded)
3 Low Dispersion lenses: the 7, 9 and 13
2 XR extra refractive lenses: the 1 and 2

in the Pentax we have
3 aspherical lenses: the 3, 11 and 15
3 Extra-low Dispersion lenses: the 7, 9 and 13
1 anomaleus dispersion glass lens: the 8

The serious difference is the nature of the glass, which are made the 7,9 and 13 lenses, Low or Extra-low Dispersion. The Pentax 24-70 will possibly be better.

lytrytyr · 09-26-2015, 08:20 AM - **1 Like**

Originally posted by Val.Ou

But the choice of special optical glasses and their repartition are different.

Don't take the marketing material too literally!

**boriscleto** · 09-26-2015, 08:22 AM - **1 Like**

Originally posted by Val.Ou

It appears that the 24-70/2,8 Pentax and 24-70/2,8 Tamron have the same optical formula. Consequenty we can think that the Pentax is a rebadged Tamron.
But the choice of special optical glasses and their repartition are different.
If we stick up a number on each lens, starting from the front lens,
in the Tamron we have
4 aspherical lenses: the 3, 8,11 and 15 (the 3 is an hybrid lens, other three are molded)
3 Low Dispersion lenses: the 7, 9 and 13
2 XR extra refractive lenses: the 1 and 2

in the Pentax we have
3 aspherical lenses: the 3, 11 and 15
3 Extra-low Dispersion lenses: the 7, 9 and 13
1 anomaleus dispersion glass lens: the 8

The serious difference is the nature of the glass, which are made the 7,9 and 13 lenses, Low or Extra-low Dispersion. The Pentax 24-70 will possibly be better.

All marketing speak.

x4rd · 09-26-2015, 08:22 AM

Originally posted by Val.Ou

Consequenty we can think that the Pentax is a rebadged Tamron.

Kenspo already admitted it.

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09-25-2015, 11:01 PM	#181
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by Zygonyx Don't think so... rather a CA eliminator Is that an attempt at sarcasm?

09-26-2015, 12:30 AM - 2 Likes	#182
Class A Pentaxian Join Date: Aug 2008 Location: Wellington, New Zealand Posts: 11,251	Originally posted by monochrome Oh for pity's sake - some people complain when Pentax rebadges a lens and asks more money for it just because the ring is green. Other people complain when they don't. And some people complain about the complainers...

09-26-2015, 12:38 AM	#183
gorme Senior Member Join Date: May 2014 Location: Galway - Ireland Posts: 213	Originally posted by Digitalis Is that an attempt at sarcasm? I would say rather Flare/Ghost eliminator... It is rear the last element which is not the pupil of the optical system so no problem with the bokeh.

09-26-2015, 02:33 AM	#184
kenspo Veteran Member Join Date: Mar 2014 Location: Oslo Posts: 2,207	More to come (Dont know exactly when they will launch).

09-26-2015, 02:50 AM	#185
JPT Pentaxian Join Date: Jan 2012 Location: Tokyo Photos: Gallery Posts: 2,821	Originally posted by kenspo More to come (Dont know exactly when they will launch). From what you're hearing, does it sound like everything else is on hold for the full frame? I mean they seem to have lost momentum with Q, 645 and compacts this year. I hope they don't sacrifice the areas where they have had some success in the past pursuing the dream of full frame.

09-26-2015, 03:49 AM	#186
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	Originally posted by Digitalis Is that an attempt at sarcasm? Gorme meant actually better what i intended to say.

09-26-2015, 04:02 AM	#187
robjmitchell Veteran Member Join Date: Oct 2007 Location: Melbourne Aus Posts: 1,776	Originally posted by lytrytyr Where is that? Page 10, thread post 144. The second aspherical element is singled out as being different to the other aspherical elements in the pentax model, but not in the tamron. not concrete of course.

09-26-2015, 04:11 AM - 1 Like	#188
kenspo Veteran Member Join Date: Mar 2014 Location: Oslo Posts: 2,207	It IS a rebuild from Tamron. So no point in that discussion

09-26-2015, 05:45 AM	#189
mee Veteran Member Join Date: May 2010 Posts: 7,403	We know of the ~28-105ish zoom and the 15-30ish zoom.. but I wonder if there are any more lenses beyond this planned between now and FF launch?

09-26-2015, 06:00 AM	#190
kenspo Veteran Member Join Date: Mar 2014 Location: Oslo Posts: 2,207	Yes, but not before 2016.

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09-26-2015, 07:20 AM	#191
lytrytyr Pentaxian Join Date: Nov 2011 Photos: Gallery \| Albums Posts: 4,310	Originally posted by robjmitchell Page 10, thread post 144. The second aspherical element is singled out as being different to the other aspherical elements in the pentax model, but not in the tamron. not concrete of course. It doesn't help when these diagrams are offered more for marketing than for serious information, but it seems that the AD glass-molded element is also present as such on the Tamron A007. As @northcoastgreg posted in #140 here, the Pentax and Tamron marketers are just highlighting different aspects.

09-26-2015, 08:03 AM	#192
Val.Ou Junior Member Join Date: Sep 2009 Location: Near Paris Photos: Gallery Posts: 39	It appears that the 24-70/2,8 Pentax and 24-70/2,8 Tamron have the same optical formula. Consequenty we can think that the Pentax is a rebadged Tamron. But the choice of special optical glasses and their repartition are different. If we stick up a number on each lens, starting from the front lens, in the Tamron we have 4 aspherical lenses: the 3, 8,11 and 15 (the 3 is an hybrid lens, other three are molded) 3 Low Dispersion lenses: the 7, 9 and 13 2 XR extra refractive lenses: the 1 and 2 in the Pentax we have 3 aspherical lenses: the 3, 11 and 15 3 Extra-low Dispersion lenses: the 7, 9 and 13 1 anomaleus dispersion glass lens: the 8 The serious difference is the nature of the glass, which are made the 7,9 and 13 lenses, Low or Extra-low Dispersion. The Pentax 24-70 will possibly be better.

09-26-2015, 08:20 AM - 1 Like	#193
lytrytyr Pentaxian Join Date: Nov 2011 Photos: Gallery \| Albums Posts: 4,310	Originally posted by Val.Ou But the choice of special optical glasses and their repartition are different. Don't take the marketing material too literally!

09-26-2015, 08:22 AM - 1 Like	#194
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Originally posted by Val.Ou It appears that the 24-70/2,8 Pentax and 24-70/2,8 Tamron have the same optical formula. Consequenty we can think that the Pentax is a rebadged Tamron. But the choice of special optical glasses and their repartition are different. If we stick up a number on each lens, starting from the front lens, in the Tamron we have 4 aspherical lenses: the 3, 8,11 and 15 (the 3 is an hybrid lens, other three are molded) 3 Low Dispersion lenses: the 7, 9 and 13 2 XR extra refractive lenses: the 1 and 2 in the Pentax we have 3 aspherical lenses: the 3, 11 and 15 3 Extra-low Dispersion lenses: the 7, 9 and 13 1 anomaleus dispersion glass lens: the 8 The serious difference is the nature of the glass, which are made the 7,9 and 13 lenses, Low or Extra-low Dispersion. The Pentax 24-70 will possibly be better. All marketing speak.

09-26-2015, 08:22 AM	#195
x4rd Senior Member Join Date: Jul 2014 Posts: 241	Originally posted by Val.Ou Consequenty we can think that the Pentax is a rebadged Tamron. Kenspo already admitted it.