Important questions that no one who's visiting Photokina has addressed yet

Blue · 09-26-2010, 03:19 PM

Originally posted by gazonk

Well, this is obviously not true in general, my 2x Soligor converter from around 1980 can turn a limited lens into the equivalent of a coke bottle bottom. But...

For an 1.4x TC to make sense, the effective resolution of the lens+TC combo must outresolve the equivalent of an 8mp sensor when used with a lens that outresolves the 16mp sensor.

Are good TCs that good?
(I'm genuinely curious about the answer)

We weren't talking about Soligor TC from 1980, but DA* compatible ones matched to the DA* lenses similar to what Sigma has done for their top tele line.

Christopher M.W.T · 09-27-2010, 06:31 AM

Is there any decent TC's around that work with SDM?

geko5766 · 09-27-2010, 06:42 AM

Yes,

I have one 1.5 x from KENKO. It works well with my DA* 50-135 and my DA*300.
But sometims the motor just runs and finds no focus point.
(Unfortunately I don´t have the complete name right now: Should be st. like: PZ AF 1,5)

But this happens really seldom.

BEst regards
Georg

PS:
As for more news concerning new products: There are unfortunatelly no other news, or at least there is a heavy embargo on it!
But officilly there is nothing to mention, all else is reading coffe-grounds.

PPS: OT
Just saw: In the hardware section there is one to be sold by Tom. I bought mine with him too. Great seller and reliable!!!
For thet money it is worth the price !!!

Blue · 09-27-2010, 06:43 AM

Originally posted by Christopher M.W.T

Is there any decent TC's around that work with SDM?

The Tammies that do are out of Production. One model of the Kenko 1.5x does although there seems to be some copies that don't. There was a Promaster 1.7x. That is about it. These were acceptable but not what I would expect from Pentax. All of these seem to be out of production.

Christopher M.W.T · 09-27-2010, 06:45 AM

Originally posted by geko5766

Yes,

I have one 1.5 x from KENKO. It works well with my DA* 50-135 and my DA*300.
But sometims the motor just runs and finds no focus point.
(Unfortunately I don´t have the complete name right now: Should be st. like: PZ AF 1,5)

But this happens really seldom.

BEst regards
Georg

Originally posted by Blue

The Tammies that do are out of Production. One model of the Kenko 1.5x does although there seems to be some copies that don't. There was a Promaster 1.7x. That is about it. These were acceptable but not what I would expect from Pentax.

That's a shame.

geko5766 · 09-27-2010, 06:50 AM

Why a shame?

Pentax wants to earn money and there is not too much earned with that. My guess is, that they will still wait further, until the marked is deeply saturated with many sdm (or now DC) - lenses.

But surely they will offer st. like that in the future.

BEst
Georg

Christopher M.W.T · 09-27-2010, 06:56 AM

Originally posted by geko5766

Why a shame?

Pentax wants to earn money and there is not too much earned with that. My guess is, that they will still wait further, until the marked is deeply saturated with many sdm (or now DC) - lenses.

But surely they will offer st. like that in the future.

BEst
Georg

The problem is they are offering a great system with 2 major holes, which let it down from been a perfect Canon/Nikon alternative.

1. Flash system is sub-standard.
2. No T/C's (which other good systems have)

The rest of the system is excellent, cameras are well built, lenses are great quality etc.

ogl · 09-27-2010, 07:09 AM

Originally posted by Christopher M.W.T

The rest of the system is excellent, cameras are well built, lenses are great quality etc.

Good irony

Christopher M.W.T · 09-27-2010, 07:41 AM

What the?!?

This is from 2008 but see the SDM t/c.

Photokina Impressions, Part 3 - Lenses: Pentax SLR Talk Forum: Digital Photography Review

ogl · 09-27-2010, 07:43 AM

Originally posted by Christopher M.W.T

What the?!?

This is from 2008 but see the SDM t/c.

Photokina Impressions, Part 3 - Lenses: Pentax SLR Talk Forum: Digital Photography Review

Christopher M.W.T · 09-27-2010, 07:46 AM

So it really exists....*sigh*

opiedog · 09-27-2010, 08:05 AM

frustrating...

northcoastgreg · 09-27-2010, 08:14 AM

Originally posted by Christopher M.W.T

So it really exists....*sigh*

Pentax's failure to release the TC promised two years ago at Photokina is a great mystery. It's understandable why they have failed to make good on their lens road map promise of a 400 f4 lens: that piece of glass would be by a wide margin their most expensive product, and Pentax seems uncomfortable selling anything for much more than $1,500. But a 1.4 TC shouldn't cost much more than $300 and would probably have sold better than either the 15 limited or the 60-250, the other products announced at Photokina 2008. So why did Pentax decide not to release their TC?

Blue · 09-27-2010, 08:23 AM

Originally posted by Christopher M.W.T

So it really exists....*sigh*

That's why I have stated that it was on the Road Map and they have working prototypes of a TC. 2 or 3 people here actually laid hands on it.

audiobomber · 09-27-2010, 08:26 AM

Originally posted by northcoastgreg

It's understandable why they have failed to make good on their lens road map promise of a 400 f4 lens: that piece of glass would be by a wide margin their most expensive product, and Pentax seems uncomfortable selling anything for much more than $1,500.

Are you sure about that? I've never seen a roadmap that showed a 400mm f4. All I've seen on the roadmap is a "Supertelephoto", with no details.

09-27-2010, 06:42 AM	#33
geko5766 Forum Member Join Date: Mar 2009 Location: Trier Photos: Gallery \| Albums Posts: 80	Yes, I have one 1.5 x from KENKO. It works well with my DA* 50-135 and my DA300. But sometims the motor just runs and finds no focus point. (Unfortunately I don´t have the complete name right now: Should be st. like: PZ AF 1,5) But this happens really seldom. BEst regards Georg PS: As for more news concerning new products: There are unfortunatelly no other news, or at least there is a heavy embargo on it! But officilly there is nothing to mention, all else is reading coffe-grounds. PPS: OT Just saw: In the hardware section there is one to be sold by Tom. I bought mine with him too. Great seller and reliable!!! For thet money it is worth the price !!! Last edited by geko5766; 09-27-2010 at 06:48 AM. Reason: Addendum*

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Pentax France answers 3 important questions	Gus	Pentax News and Rumors	46	03-18-2010 10:26 AM
Landscape Visiting a old friend	Jimbo	Post Your Photos!	4	03-06-2010 11:15 AM
USPS - Undeliverable as Addressed	deadwolfbones	General Talk	18	02-26-2010 06:26 PM
Visiting a friend.. (Portrait)	Usuqa	Post Your Photos!	6	05-10-2009 12:11 PM
Visiting Miami-Looking For Holster Unit In Stores	shutterpuppy	Pentax Camera and Field Accessories	0	12-18-2008 12:02 PM

09-26-2010, 03:19 PM	#31
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by gazonk Well, this is obviously not true in general, my 2x Soligor converter from around 1980 can turn a limited lens into the equivalent of a coke bottle bottom. But... For an 1.4x TC to make sense, the effective resolution of the lens+TC combo must outresolve the equivalent of an 8mp sensor when used with a lens that outresolves the 16mp sensor. Are good TCs that good? (I'm genuinely curious about the answer) We weren't talking about Soligor TC from 1980, but DA* compatible ones matched to the DA* lenses similar to what Sigma has done for their top tele line.

09-27-2010, 06:31 AM	#32
Christopher M.W.T Veteran Member Join Date: Jun 2009 Posts: 1,689 Original Poster	Is there any decent TC's around that work with SDM?

09-27-2010, 06:43 AM	#34
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by Christopher M.W.T Is there any decent TC's around that work with SDM? The Tammies that do are out of Production. One model of the Kenko 1.5x does although there seems to be some copies that don't. There was a Promaster 1.7x. That is about it. These were acceptable but not what I would expect from Pentax. All of these seem to be out of production.

09-27-2010, 06:45 AM	#35
Christopher M.W.T Veteran Member Join Date: Jun 2009 Posts: 1,689 Original Poster	Originally posted by geko5766 Yes, I have one 1.5 x from KENKO. It works well with my DA* 50-135 and my DA*300. But sometims the motor just runs and finds no focus point. (Unfortunately I don´t have the complete name right now: Should be st. like: PZ AF 1,5) But this happens really seldom. BEst regards Georg Originally posted by Blue The Tammies that do are out of Production. One model of the Kenko 1.5x does although there seems to be some copies that don't. There was a Promaster 1.7x. That is about it. These were acceptable but not what I would expect from Pentax. That's a shame.

09-27-2010, 06:50 AM	#36
geko5766 Forum Member Join Date: Mar 2009 Location: Trier Photos: Gallery \| Albums Posts: 80	Why a shame? Pentax wants to earn money and there is not too much earned with that. My guess is, that they will still wait further, until the marked is deeply saturated with many sdm (or now DC) - lenses. But surely they will offer st. like that in the future. BEst Georg

09-27-2010, 06:56 AM	#37
Christopher M.W.T Veteran Member Join Date: Jun 2009 Posts: 1,689 Original Poster	Originally posted by geko5766 Why a shame? Pentax wants to earn money and there is not too much earned with that. My guess is, that they will still wait further, until the marked is deeply saturated with many sdm (or now DC) - lenses. But surely they will offer st. like that in the future. BEst Georg The problem is they are offering a great system with 2 major holes, which let it down from been a perfect Canon/Nikon alternative. 1. Flash system is sub-standard. 2. No T/C's (which other good systems have) The rest of the system is excellent, cameras are well built, lenses are great quality etc.

09-27-2010, 07:09 AM	#38
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by Christopher M.W.T The rest of the system is excellent, cameras are well built, lenses are great quality etc. Good irony

09-27-2010, 07:41 AM	#39
Christopher M.W.T Veteran Member Join Date: Jun 2009 Posts: 1,689 Original Poster	What the?!? This is from 2008 but see the SDM t/c. Photokina Impressions, Part 3 - Lenses: Pentax SLR Talk Forum: Digital Photography Review

09-27-2010, 07:43 AM	#40
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by Christopher M.W.T What the?!? This is from 2008 but see the SDM t/c. Photokina Impressions, Part 3 - Lenses: Pentax SLR Talk Forum: Digital Photography Review

09-27-2010, 07:46 AM	#41
Christopher M.W.T Veteran Member Join Date: Jun 2009 Posts: 1,689 Original Poster	So it really exists....sigh

09-27-2010, 08:05 AM	#42
opiedog Inactive Account Join Date: Jan 2008 Location: NC Posts: 787	frustrating...

Thread Tools	Search this Thread
	Search this Thread: Advanced Search

09-27-2010, 08:14 AM	#43
northcoastgreg Pentaxian Join Date: Feb 2010 Location: Northern Michigan Photos: Gallery \| Albums Posts: 6,168	Originally posted by Christopher M.W.T So it really exists....sigh Pentax's failure to release the TC promised two years ago at Photokina is a great mystery. It's understandable why they have failed to make good on their lens road map promise of a 400 f4 lens: that piece of glass would be by a wide margin their most expensive product, and Pentax seems uncomfortable selling anything for much more than $1,500. But a 1.4 TC shouldn't cost much more than $300 and would probably have sold better than either the 15 limited or the 60-250, the other products announced at Photokina 2008. So why did Pentax decide not to release their TC?

09-27-2010, 08:23 AM	#44
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by Christopher M.W.T So it really exists....sigh That's why I have stated that it was on the Road Map and they have working prototypes of a TC. 2 or 3 people here actually laid hands on it.

09-27-2010, 08:26 AM	#45
audiobomber Veteran Member Join Date: May 2008 Location: Sudbury, Ontario Photos: Albums Posts: 6,806	Originally posted by northcoastgreg It's understandable why they have failed to make good on their lens road map promise of a 400 f4 lens: that piece of glass would be by a wide margin their most expensive product, and Pentax seems uncomfortable selling anything for much more than $1,500. Are you sure about that? I've never seen a roadmap that showed a 400mm f4. All I've seen on the roadmap is a "Supertelephoto", with no details.