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04-07-2010, 06:39 PM   #1
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Pentax SDM Super Telephoto Needed

I would like to add myself to those wildlife and sports photographers who feel Pentax needs to come up with a state-of-the-art lens at least in the 400mm range. In the meantime there should also be a Teleconverter that will autofocus with SDM lenses. That shouldn't be hard to do even if it's under the Kenko name since HOYA makes their glass.

04-07-2010, 07:05 PM   #2
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QuoteOriginally posted by fredok1 Quote
Pentax needs to come up with a state-of-the-art lens at least in the 400mm range. In the meantime there should also be a Teleconverter that will autofocus with SDM lenses.
I couldn't agree more. I'm trying to figure out how to reach a super-telephoto range right now:

https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/96450-if-you-c...d-you-buy.html

The SDM teleconverter is part of the issue, as to get one that works with some lenses, it seems that you have to buy the out of manufacture Tamron. You can buy the Sigma 1.4x & 2.0x, but it appears to only work reliably on Sigma lenses, or you can buy the hard to get Pentax 1.7x teleconverter that has some focus for everything.

Or you could just go all out and offer some obscene amounts of mula for the FA* lenses...
04-07-2010, 10:20 PM   #3
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Would a DA*200/300 with teleconverter be an option?
04-07-2010, 11:47 PM   #4
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haven't use a sdm lenses before. but some people says that sdms are slow and easy to broken

04-08-2010, 12:20 AM   #5
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QuoteOriginally posted by phzy2003 Quote
haven't use a sdm lenses before. but some people says that sdms are slow and easy to broken
One can't make a blanket statement that SDM lenses are slow and easy to break.
04-08-2010, 12:27 AM   #6
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Do you realize how big this lens would have to be? Well maybe not too big considering I think the Bigma has HSM. But have you ever seen the Bigma before?
04-08-2010, 12:28 AM   #7
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I'd also love a DA* 400mm prime. I think the 60-250mm paired with a 400mm would be swell. How much would it cost, though?
05-23-2010, 09:04 AM   #8
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QuoteOriginally posted by patrickw Quote
I'd also love a DA* 400mm prime. I think the 60-250mm paired with a 400mm would be swell. How much would it cost, though?
A DA* 400mm f/4 prime might be pricey. But it would be worth it. The only alternative is to invest in Canon or Nikon. I own the 60-250mm and love it. It would be even more versatile with a converter that autofocuses with SDM.

05-23-2010, 09:58 AM   #9
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They could bring back the FA* 600mm f4 with both screwdrive and sdm III. It wasn't and wouldn't be cheap.

Pentax had a tc on the map and then dropped it out of the blue. That would be a good option for some of us. The could release a 1.4x and a 2x or just a 1.7x.

My A 400mm f5.6 is physically bigger than my DA* 300mm f4 lens so I'm not too keen on seeing the size of a 400mm f4 much less an f2.8 which the made once upon a time. At least with the size of the FA 600mm f4, it has reach and speed.

Go here and look at the size and weight of these things.

Pentax Extreme Telephoto Prime Lenses
05-23-2010, 10:00 AM   #10
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QuoteOriginally posted by fredok1 Quote
A DA* 400mm f/4 prime might be pricey. But it would be worth it. The only alternative is to invest in Canon or Nikon. I own the 60-250mm and love it. It would be even more versatile with a converter that autofocuses with SDM.
There's pricey and there's pricey. The FA* 600mm f4 that was recently discontinued was a special order item at ~$8,000. In reality, I think if they come out with a lens, it should be a DA* 500mm f4. I don't see any reason to come out with a new prime in between the 300 and 600 unless it is a 500mm. The damn thing will require a tripod regardless.
05-23-2010, 10:22 AM   #11
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400*1,5=600. Considering was they have done until now: 16-50*1,5=24-75; 50-135*1,5=75-202; 55*1,5=82,5... you see what I mean, right? So 400 seems more plausible to me.
05-23-2010, 10:35 AM   #12
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QuoteOriginally posted by Zav Quote
400*1,5=600. Considering was they have done until now: 16-50*1,5=24-75; 50-135*1,5=75-202; 55*1,5=82,5... you see what I mean, right? So 400 seems more plausible to me.
The crop factor has nothing to do with the focal length. By your logic, DA* 300mm x 1.5 = 450 which means they already released it.
05-23-2010, 10:38 AM   #13
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QuoteOriginally posted by Blue Quote
There's pricey and there's pricey. The FA* 600mm f4 that was recently discontinued was a special order item at ~$8,000. In reality, I think if they come out with a lens, it should be a DA* 500mm f4. I don't see any reason to come out with a new prime in between the 300 and 600 unless it is a 500mm. The damn thing will require a tripod regardless.
A 500mm f/4 would be a tripod lens. I'd like a DA* 400mm f/4 that would be hand holdable all day long. Also a 400mm would complement my DA* 60-250mm. A 400mm f/4 might still be hand holdable with a teleconverter.
05-23-2010, 10:59 AM   #14
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QuoteOriginally posted by fredok1 Quote
A 500mm f/4 would be a tripod lens. I'd like a DA* 400mm f/4 that would be hand holdable all day long. Also a 400mm would complement my DA* 60-250mm. A 400mm f/4 might still be hand holdable with a teleconverter.

If you consider a 4+ pound lens (>2000 grams) hand holdable, fine. The msrp on such a lens would probably between $4500-6000. The just quit making the FA* 600mm f4. Why would they come out with a focal length that would be so close to the 300 at this point? I have a A 400mm f5.6 and can barely hand hold it.
05-23-2010, 11:42 AM - 1 Like   #15
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wildlife is not all about lenses, AF speed, full or croped
it needs particularly a lot of time and patience to get a good shot
one is do with 300 and the other one with 600 - but which one is the 600?
make a guess



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