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07-12-2010, 02:44 PM   #61
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QuoteOriginally posted by Winder Quote
Nikon, Canon, Zeiss, & Sony all produce fast 135mm glass for $1,500 or less. Canon 135L is under $1,000.

The smaller image circle of the APS-C is less demanding than those of the full frame sensors, so building a 135mm f/1.8 for and APS-C sensor should be easier than building one for a full frame and maintaining edge to edge sharpness.
.

Nikon and Canon have about 100 times larger market than Pentax for such a lens; still they sell relatively few of them.
A brand new lens need to pay for itself. See what the 55/1.4 cost; probably the most expensive standard lens form any volume manufacturer. And people are whining.
APS sets much stronger demands on lenses than FF; in fact 50% more. Distortion, fringing, resolution needs to be 50% better on APS than on FF to be equal at the same output size. Edge definition is no problem for short telephoto lenses.
Forget any cheap exotic glass. It is an unreasonable demand.

07-12-2010, 02:48 PM   #62
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QuoteOriginally posted by Pål Jensen Quote
Are you willing to pay what these lenses will cost? People are already conplaining about the 55mm which will be the cheapest of them....
I have 2 lenses for my E-3.
14-35 f/2 @$2,000
35-100 f/2 @$2,000

For my 5D I have
85L II $2,000
135L $1,000
24-70L $1,200
couple of older EF lenses and some old FD mount lenses.

I am selling the Olympus system because they seem to be heading in a direction I don't care to go.

To answer the question..... Yes. If Pentax will make very high quality glass I will buy it. The new F-DA 100mm WR is a very nice lens and an a bargain at its current price. What I like about my Olympus glass is there is no need for any software/in-camera distortion correction. My 14-35 is razor sharp at f/2 and shows almost no vignetting. If the lens requires a "profile" for Lightroom to fix its optical faults then I'm not going to waste my money on it.
07-12-2010, 02:50 PM   #63
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QuoteOriginally posted by Winder Quote
Bring back the 28-70 f/2.8 and the 80-200 f/2.8. Used copies are going to well over $1,000 dollars, and plenty of people are buying the Tamron and Sigma versions for use on APS-C bodies. There is obviously a market for them and the design work is 99% done. Just update them for digital.
Why do you think they go for over $1000? Because nobody bought them - they were too expensive, even with Pentax then very reasonable lens price policy (long gone). They are as rare as hens teeth. Some FA* lenses are made in numbers of a few hundreds.
Same goes for the A* 135/1.8 and the A* 85/1.4. They are rare.

People are dreaming about high-end lenses; some of the an impossibility practically speaking. But most end up not buying them; particularly when they see the price.
07-12-2010, 02:54 PM   #64
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QuoteOriginally posted by Mike.P® Quote
To be honest I find it incredible that a company such as Pentax with it's history of camera and lens manufacture over the years has a 300mm f4 as it's longest (and fastest) lens.
It's all about economics. Pentax is not a big player in industry any more. They can't afford to make ultra-expensive lenses that only a very few of their customers can afford to buy. That's why there's no lenses in their DA lineup more expensive than $1,500.

That said, the only DA lens in their 2009 roadmap that has not been released is DA "Super Telephoto." So it's likely that a longer lens (probably either a DA* 400 f5.6) will be released at some point. I doubt we'll see anything longer or faster than that, because anything longer or faster will be much more expensive. If Pentax has avoided making a fast 135 (because it would cost +$1,600), what makes anyone think they will make any lens that costs over $3,000?

What would make sense for Pentax is to finally release that 1.4 "rear converter" promised at Photokina in 2008.

07-12-2010, 02:57 PM   #65
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QuoteOriginally posted by northcoastgreg Quote
It's all about economics. Pentax is not a big player in industry any more. They can't afford to make ultra-expensive lenses that only a very few of their customers can afford to buy. That's why there's no lenses in their DA lineup more expensive than $1,500.
Ok so how Pentax can afford to make ultra-expensive camera which 645d is?
07-12-2010, 03:02 PM   #66
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QuoteOriginally posted by northcoastgreg Quote
It's all about economics. Pentax is not a big player in industry any more. They can't afford to make ultra-expensive lenses that only a very few of their customers can afford to buy. That's why there's no lenses in their DA lineup more expensive than $1,500.
But isn't that exactly what they are doing with the new lenses for the 645D?

How many of the new 645D lenses will the sell a year?

If they can justify building high end glass for the 645D then it should not be hard to justify doing it for the APS-C bodies.

Is there an adapter that allows for 100% functionality of 645D lenses with the K-7?
07-12-2010, 03:06 PM   #67
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quote Winder :
The smaller image circle of the APS-C is less demanding than those of the full frame sensors, so building a 135mm f/1.8 for and APS-C sensor should be easier than building one for a full frame and maintaining edge to edge sharpness.


Thats true,but Pentax has actually no greater interests to bring highend in aps-c only format
Look at DA*55,200,300.........
07-12-2010, 03:09 PM   #68
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OK, time to play catch-up on this thread and accompany Aristophanes in injecting a note of sanity.

QuoteOriginally posted by tumbleguts Quote
If Pentax did release a 135mm - I think it should be f2 or f1.8 too.
The Pentax policy is to release field of view equivalent lenses of the old classics. Following this logic they would not release a 135mm lens but rather 90mm. But whether they would do so hot on the heels of the 100mm macro is another question.

QuoteOriginally posted by Winder Quote
I would like to see Pentax roll out an 85mm f/1.4 (update the old lens) and a D-FA* 135mm f/1.8.
That's why we have the DA*55 -- it is the replacement for the FA*85.

QuoteOriginally posted by Inspector 17 Quote
I think that 21 to 31 is a gaping hole
Yes, it is the single biggest gap in the Pentax line, especially as the FA31 measures out at 32mm focal. I think we could reasonably ask for a DA 24/2.8 Limited and/or DA 28/2.8 Limited. The latter makes ultimate sense as it is APS-C equivalent of the FA43 focal length.

No, we are not going to get anything faster. In the digital world high ISO is the new fast lens. This is obvious from the DA Limited line. And no, I do not want to pay two grand for a DA* 28/1.8.

07-12-2010, 03:15 PM   #69
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QuoteOriginally posted by i83N Quote
Ok so how Pentax can afford to make ultra-expensive camera which 645d is?
It's not ultra-expensive; it's a bargain for what you get. You are comparing apples to alabaster.

QuoteOriginally posted by Winder Quote
If they can justify building high end glass for the 645D then it should not be hard to justify doing it for the APS-C bodies.
Actually, it's much easier to make good lenses for a lower pixel density sensor. That is not to say they will be cheaper, however, since more glass costs more money.

QuoteOriginally posted by Winder Quote
Is there an adapter that allows for 100% functionality of 645D lenses with the K-7?
There is a 645 to k-mount adapter but of course focus and aperture control will be manual. You may be disappointed in the sharpness, however, given the big change in sensor size.
07-12-2010, 03:19 PM   #70
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QuoteQuote:
Thats true,but Pentax has actually no greater interests to bring highend in aps-c only format
Look at DA*55,200,300.........
Hopefully that means they plan on releasing a Full Frame body and the high quality lenses to go with it. Sony has been able to bring the production cost of its 25MP ff sensor down, and with the A9xx getting closer, Pentax might get a good deal on the older (but still very good) 25MP sensor.
07-12-2010, 03:22 PM   #71
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QuoteOriginally posted by rparmar Quote
It's not ultra-expensive; it's a bargain for what you get. You are comparing apples to alabaster.
Ofcose it's a bargain if you are pro, if you are semi-pro you can afford 1000-1500$ lens.
07-12-2010, 03:22 PM   #72
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QuoteOriginally posted by rparmar Quote
There is a 645 to k-mount adapter but of course focus and aperture control will be manual. You may be disappointed in the sharpness, however, given the big change in sensor size.
I have none of this so couldn't test myself, but 645 lenses are said to be *better* than 35mm lenses. If some lenses do lack sharpness, those are 35mm lenses.
(this is according to many comments I read, please don't shoot the messenger )
07-12-2010, 03:26 PM   #73
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QuoteOriginally posted by rparmar Quote
There is a 645 to k-mount adapter but of course focus and aperture control will be manual. You may be disappointed in the sharpness, however, given the big change in sensor size.
A friend has borrowed my old Pentax 75mm f/2.8 AL (6x7 glass) for his EP-2 that he is using with an adapter. The sharpness is very good. It is an awkward looking setup, but he is getting very good results.

I have also seen some images he took with a Pentax 645 lens (do not remember which one) on his Olympus E-30. Very sharp images and great color.
07-12-2010, 03:26 PM   #74
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QuoteOriginally posted by bdery Quote
We now have

10-17
12-24
16-50
17-70
18-55
50-200
55-300
60-250
50-135
14
15
21
31
35
40
43
49
50
55
70
77
100
200
300
49? What the heck's 49mm?
07-12-2010, 03:44 PM   #75
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QuoteOriginally posted by thibs Quote
I have none of this so couldn't test myself, but 645 lenses are said to be *better* than 35mm lenses. If some lenses do lack sharpness, those are 35mm lenses.
(this is according to many comments I read, please don't shoot the messenger )
I have that adapter and tried the FA645 45/2.8 and the FA645 75/2.8 on 35mm slide film. I compared them to the 43 Limited and the FA* 85/1.4, respectively. Theres no contest; the K-mount lenses are significantly better.
MF lenses doesn't need to be as good as 35mm lenses although many are. The larger the format the less lens qualities matter for in the final image quality. For small formats you really need good lenses to get great results; for larger format more of overall quality is provided for by sheer real estate....
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