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08-07-2010, 02:18 PM   #16
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QuoteOriginally posted by Urkeldaedalus Quote
Post a poll instead. You'll get more answers in the long run.
How can i do this here?

08-07-2010, 02:22 PM   #17
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I think Pentax should consider making an 1x SDM converter for their future EVIL body. It will make the body truly unique
08-07-2010, 02:33 PM   #18
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I wouldn't be interested at all. SDM hasn't impressed me much (HSM either, for that matter, but at least Sigma backs theirs up with a multi-year warranty.)
08-07-2010, 02:34 PM   #19
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1.4X prefered but both 1.4x and 2X would be ideal if of very good quality, price won't matter much.

08-07-2010, 02:38 PM   #20
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1.4x maybe but no more than 1.7x at ~ $200-275. If its really good and WR, more. 2x is a no go for me.
08-07-2010, 02:43 PM   #21
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I think a TC for around 250 - 300 might be sellable but although lots of people here would like one, myself included, I'm not sure Pentax have enough suitable lenses to bother making it a priority given the Sigma TCs.

The DA* 200 and 300 are obvious candidates for a TC but apart from these and mabe the 100 Macro I can't think of any other lenses that seem like a natural match. DA lenses in production I mean. OK the 60-250 could maybe take one...

Pentax showed a prototype TC a couple of years ago so surely they're working on one or at least have some designs drawn up anyway.
08-07-2010, 02:51 PM   #22
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QuoteOriginally posted by Caat Quote
I think a TC for around 250 - 300 might be sellable but although lots of people here would like one, myself included, I'm not sure Pentax have enough suitable lenses to bother making it a priority given the Sigma TCs.

The DA* 200 and 300 are obvious candidates for a TC but apart from these and mabe the 100 Macro I can't think of any other lenses that seem like a natural match. DA lenses in production I mean. OK the 60-250 could maybe take one...

Pentax showed a prototype TC a couple of years ago so surely they're working on one or at least have some designs drawn up anyway.
The Sigma TCs don't work with my DA* 300mm. Nor do they work with the DA* 200mm and there are plenty of people out there with those and the 60-250 and 3rd party f2.8 lenses that would be interested in one.
08-07-2010, 02:53 PM   #23
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QuoteOriginally posted by Blue Quote
The Sigma TCs don't work with my DA* 300mm. Nor do they work with the DA* 200mm and there are plenty of people out there with those and the 60-250 and 3rd party f2.8 lenses that would be interested in one.
Do you mean they don't AF? or they don't fit because of rear element concerns?

08-07-2010, 02:57 PM   #24
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QuoteOriginally posted by Caat Quote
Do you mean they don't AF? or they don't fit because of rear element concerns?
They don't af, plus there are other issues. They are really designed to work with specific Sigma lenses.
08-07-2010, 03:19 PM   #25
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I think the current Pentax lineup does not demand any high quality TC except maybe 1.4x for the DA*200/2.8 & DA*300/4 (both demand different designs like 1.4x-L & 1.4x-S). However, the problem is that the majority of existing Pentax users are asking for high grade affordable TC for their consumer zooms, which aren't good (too slow and not sharp enough) for TC to start with. The DA*50-135/2.8 might be the exception, which might or might not be sharp enough for TC. Personally, I feel there is no significant market for any Pentax pro grade TC, not until Pentax have some killer super-teles, which again won't sell in significant volume in the first place. If they repackaged the A1.4X-L for DA*200/2.8, it would eat away the sale of DA*300/4. That leaves only a DA 1.4X-S for the DA*300/4 which is really a little slow for TC in practice, and the DA*300/4 is not exactly popular either. That means it makes no sense for Pentax to produce any pro grade TC at all.
08-07-2010, 03:33 PM   #26
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sense or not sense...we dont know it.
thats the point that pentax is asking about this.
08-07-2010, 03:52 PM   #27
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While this isn't what you are asking for, your original post brings up an interesting question; is Pentax Japan aware that the world would like auto exposure extension tubes?

Is Pentax Japan aware that Pentaxians around the world would like a rangier zoom like an 18-135, 18-200, etc?

Is Pentax Japan aware that Pentaxians would like lenses longer than 300mm even if they aren't sharp enough to make their eyes bleed?

Is Pentax Japan aware that there is a marketplace on this forum where they can see values being realized by some of the lenses and accessories being sold?

Is Pentax Japan aware that they may need a slightly larger sales force who can go out and impress upon retailers or distributors the value of carrying the brand? (Viral marketing is great, but most retailers aren't glued to youtube and facebook except to post their own viral marketing schemes.)

I am struggling with the likelihood that Pentax Japan is truly unaware of these things we want. The there is a higher likelihood that they are watching how they spend their money, and they have determined that there is not enough demand for the item you and I and those here are suggesting. But if they truly are just becoming aware that Pentaxians want these things and others, then let them have it when you see them.
08-07-2010, 03:53 PM   #28
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QuoteOriginally posted by zackspeed Quote
sense or not sense...we dont know it.
thats the point that pentax is asking about this.
i think an inexpensive and perhaps WR sealed TC makes sense for the pentax market.

as others have already described, the Sigma ones don't really work well with multiple Pentax bodies and lenses.
08-07-2010, 03:55 PM   #29
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QuoteOriginally posted by dnaseigel Quote
While this isn't what you are asking for, your original post brings up an interesting question; is Pentax Japan aware that the world would like
an inexpensive line-up of primes (~30mm f/1.8, 85mm-90mm f/2) like the recently introduced Sony and Nikons?
08-07-2010, 04:31 PM   #30
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QuoteOriginally posted by wlachan Quote
I think the current Pentax lineup does not demand any high quality TC except maybe 1.4x for the DA*200/2.8 & DA*300/4 (both demand different designs like 1.4x-L & 1.4x-S). However, the problem is that the majority of existing Pentax users are asking for high grade affordable TC for their consumer zooms, which aren't good (too slow and not sharp enough) for TC to start with. The DA*50-135/2.8 might be the exception, which might or might not be sharp enough for TC. Personally, I feel there is no significant market for any Pentax pro grade TC, not until Pentax have some killer super-teles, which again won't sell in significant volume in the first place. If they repackaged the A1.4X-L for DA*200/2.8, it would eat away the sale of DA*300/4. That leaves only a DA 1.4X-S for the DA*300/4 which is really a little slow for TC in practice, and the DA*300/4 is not exactly popular either. That means it makes no sense for Pentax to produce any pro grade TC at all.
I'm not so sure you can compare previous TC designs for the A series 200 and 300mm lenses to the DA* 200 and 300. Pentax hasn't really designed AND marketed a tc specifically for an AF lens. The prototype they have was for the DA series.
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