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01-04-2009, 09:18 PM   #1
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Lens roadmap DA* 400 f5.6 in 2009?

Any guesses on whether there will be a DA* 400 5.6 in 2009?

What price? Maybe 1450? I hope.

any possibility of Pentax adding this in the progression of prime DA*s?

01-04-2009, 09:44 PM   #2
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If there were a 400mm it's gotta be f/4, please Pentax.
01-04-2009, 10:24 PM   #3
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f4 aperture will bump up the cost of the lens even more. I seriously doubt the pricing to be really affordable by most of pentax users.

Da* 400mm f5.6 will be very unlikely to be ever considered given the repeated delay of Da* 55mm f1.4 and Da 15mm ltd f4. The recent slowing of pentax camera sale is not going to prompt any more lenses to be released.

After all, most pentax users are after a huge zoom just like olympus users. Telephoto primes are hardly a money making item for corporate company like HOYA
01-04-2009, 11:02 PM   #4
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Their roadmap says "super-tele" if I recall correctly. Anything smaller/slower than 400/4 would be a little less than "super" IMHO. I have no idea what the business sense of making these lenses would be but I assumed that this lens would be either a 400/4; 500/4; or 600/5.6. It is definitely missing from their lineup right now. I don't see it being worth their while to complete with the BIGMA but I suppose they might go that route too??

01-04-2009, 11:07 PM   #5
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QuoteOriginally posted by roentarre Quote
f4 aperture will bump up the cost of the lens even more. I seriously doubt the pricing to be really affordable by most of pentax users.

Da* 400mm f5.6 will be very unlikely to be ever considered given the repeated delay of Da* 55mm f1.4 and Da 15mm ltd f4. The recent slowing of pentax camera sale is not going to prompt any more lenses to be released.

After all, most pentax users are after a huge zoom just like olympus users. Telephoto primes are hardly a money making item for corporate company like HOYA
Oh yeah true, it's gonna cost quite a lot at f/4.

But a 400/5.6 could be gotten with a 300/4 with a teleconverter right? So I don't know if Pentax would release such a lens
01-05-2009, 03:22 AM   #6
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QuoteOriginally posted by soccerjoe5 Quote
Oh yeah true, it's gonna cost quite a lot at f/4.

But a 400/5.6 could be gotten with a 300/4 with a teleconverter right? So I don't know if Pentax would release such a lens
Except the lens + teleconverter would lose resolution compared to the dedicated lens.


Pentax used to have a 400 F5.6 and may do so again. Bearing in mind it provides the same crop as a 600mm F5.6 would have done, and it becomes a useful lens for not too much money - say around the same as the 300 F4

Make it an F4 and you effectively double the weight and cost.
01-05-2009, 07:17 AM   #7
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if 400 5.6 is what you really need, might as well spare yourself the suspense and go to canon
that or find an overpriced F/A* 400 5.6, or the rarer Sigma's
01-05-2009, 07:54 AM   #8
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If no DA* 400 f5.6, then what alternative lenses?

Besides Taks, what other 400mm lenses are good, either pentax or 3rd parties?

Also an "A" setting is mandatory

Which is better Tokina or Sigma?

Which is better in the Pentax lineup; FA 400? I going to check the lens review section too.

Thanks

01-05-2009, 09:19 AM   #9
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QuoteOriginally posted by *isteve Quote
Except the lens + teleconverter would lose resolution compared to the dedicated lens.


Pentax used to have a 400 F5.6 and may do so again. Bearing in mind it provides the same crop as a 600mm F5.6 would have done, and it becomes a useful lens for not too much money - say around the same as the 300 F4

Make it an F4 and you effectively double the weight and cost.
Then f/4.5 instead. A 400/4 would be around the same weight as a 300/2.8. I hope for a 400/4, as the reputation of the FA* 400/5.6 was not stellar. So I would prefer a new formula, like they did on the DA* 300/4.

My first choice would be a Pentax DA* lens, to get the sealing. Else the outstanding Sigma prime 500mm F4.5 EX DG would be the way to go. Bigma is sweet, but too slow on the long end. I also prefer a dedicated lens, instead of zoom, in the extreme zones; like ultra-wide or ultra-tele.

When Pentax brings out a faster fps cam, like Oly E3 or Sony A700, then they also need the telelenses to go with it.

Else I guess one will have to tape some folie wrap around the lens mount, to get some weather and dust sealing.

QuoteOriginally posted by rdrum76 Quote
Besides Taks, what other 400mm lenses are good, either pentax or 3rd parties?

Also an "A" setting is mandatory

Which is better Tokina or Sigma?

Which is better in the Pentax lineup; FA 400? I going to check the lens review section too.

Thanks
The Tokina 400/5.6 is exceptional, but hard to get a hold off. I don’t expect Super Telelenses in 2009, likely more 2010 earliest. Get the DA* 300/4, and put a 1.4 TC on it.
It may not be an ideal set-up, but still many use the Nikon 200-400/4 with a 1.4 TC, with great results.

Last edited by Jonson PL; 01-05-2009 at 09:26 AM.
01-05-2009, 10:14 AM   #10
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QuoteOriginally posted by roentarre Quote
f4 aperture will bump up the cost of the lens even more. I seriously doubt the pricing to be really affordable by most of pentax users.
But even F4 is rather slow for the primary uses of such a lens; sports and wildlife. (f2.8 is slow for the wretched crepuscular songbirds). Affordable is no good if it doesn't come with useful.

What I want is a 600/f3, or a 400/f2, done as a mirror lens, but a good one, with weather sealing. (Ok, maybe that has to be 600/f4 or 400/f2.8).

The Zeiss "mirrortar" lenses had/have built in, rotating, filters; these are part of the lens, rather than user-serviceable parts. Two rotating filter wheels with neutral density filters would let the lens do the full range of aperture adjustment automatically. (Kinda like stacking shims, but hey. If it works, it works.)

Full on weather sealing; this is something people are going to creep about in the wet with, trying to get a good shot of a nesting plover or that last goal at their kid's soccer game. DA image quality is fine, because this is not about bokeh or corner sharpness, this is about reach and affordability.

Given the prices of 200mm and 150mm telescopes, they could very likely do this for under 2 kUSD. At which point it would sell very well, because there would be nothing else like it; it would be relatively compact, light, fast, and you can take it out in the wet. This pushes Pentax's value proposition as a brand; it might not be the best possible gear, but it's the best value for money and it'll do things other brands don't.
01-05-2009, 11:15 AM   #11
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QuoteOriginally posted by Graydon Quote
But even F4 is rather slow for the primary uses of such a lens; sports and wildlife. (f2.8 is slow for the wretched crepuscular songbirds). Affordable is no good if it doesn't come with useful.

What I want is a 600/f3, or a 400/f2, done as a mirror lens, but a good one, with weather sealing. (Ok, maybe that has to be 600/f4 or 400/f2.8).

Given the prices of 200mm and 150mm telescopes, they could very likely do this for under 2 kUSD. At which point it would sell very well, because there would be nothing else like it; it would be relatively compact, light, fast, and you can take it out in the wet. This pushes Pentax's value proposition as a brand; it might not be the best possible gear, but it's the best value for money and it'll do things other brands don't.
Those $2k telescopes doesn't give the sharpness at all, not to mention the color shifting problem. Also they are usually in f10 and smaller range. so what you want like 600/f3 or 400/f2 won't cost as cheap for sure.
01-05-2009, 11:35 AM   #12
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QuoteOriginally posted by vizjerei Quote
Those $2k telescopes doesn't give the sharpness at all, not to mention the color shifting problem. Also they are usually in f10 and smaller range. so what you want like 600/f3 or 400/f2 won't cost as cheap for sure.
The telescopes aren't 2 kUSD; 8" Celestron is between 1 kUSD and 1.2 kUSD. You can get 5" down at .5 kUSD. These tend to come with various other stuff, too; finder scopes, mounts, and so on. They also tend to be quite acceptably sharp.

Telescopes tend to be f10 because f10 is about what is wanted for most astronomical purposes. Colour shifting isn't a problem; the mirrors cancel each other out. Sharpness is a major virtue in astro stuff and is achievable (consider those Zeiss Mirotar lenses) in camera lenses.

So I think there's no actual technical barrier; whether the folks at Pentax/Hoya think this woudl be a good idea is a whole different question, but I can hope.
01-05-2009, 11:41 AM   #13
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A 400/5.6 would be superfluous if the 1.4x SDM TC is shipped coupled to the DA* 300/4 that we already have. I'm firmly in the "it better be 400/4 or longer and/or faster else it's pointless" camp.

With that said odds are higher than I'd like that it's a 400/5.6 that we see because it is like integrating a TC into an already existing design. :ugh:
01-05-2009, 11:44 AM   #14
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I never use that focal length, so it doesn't concern me.
01-05-2009, 11:47 AM   #15
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how big and heavy is it? don't the radius need to be much larger for it to have a fast aperture? sorry I am totally newbie on mirror lens..
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