Don't know if it's good for sports or not, the thing is the DAL 55-300 you've now will give you better quality, they say the sigma is quite soft at the long end and that counts for all such lenses.

Here is a review about the sigma link

Here is the Tamron 18-250 the Pentax one is the same link

Like said it won't be a step forward but a step backwards but you don't need to switch lenses at least.

If you want higher quality the DA*60-250 would be the way to go link

How do I import the profiles then, there is no option for that

Very decent results, I also see I'm pushing my K10D (same sensor) also a but further then before.
As long as the exposure is good or even slightly over exposed it's most of the time very good.

I believe it affects the centre focus point though, as long as you use centre average it would give good results from what I hear, it's with the spot metering it can go wrong.

Sorry the mistypes in your comment makes it hard to read.
You're looking for a 28-300 lens or something close to it right?

There are some superzooms from pentax tamron and sigma that goes from 18-250mm that might be it but those aren't super fast lenses and you need to give in some quality to get those zoom range in one lens.

If you want a better lens then you will see these lenses are more specialized and have a short zoom range to deliver more quality.
The DA*60-250 f/4 or the sigma 100-300 f/4 would be your best bet for a better quality lens in the zoom range you're looking for and there are 50-135/150 f/2.8 and 70-200 f/2.8 lenses as well.

Yeah I'm very happy with that, I was hoping it works the same as in photoshop but it doesn't seem that way
Lets hope Pentax would modify their profiles so that they can be used with Adobe.

You also can't save profiles
I've quite a lot of shots with the Pentax 16-50 at 16mm.
I could batch process them of course but be able to safe a profile would have been better.

Congrats Mike you lucky guy (jealous)

Does anyone knows if you can download lens profiles other users made for the lens correction?

There is also a filter in front of the sensor that blocks UV so that's great the ones in the k10D and newer models also blocks infra-red

Btw I believe Zeiss has made a special lens for such photography, at least infra-red.

Yeah the Samsung Wave appears to have one of the best screens out there right now.
And it has bluethooth 3.0 and 802.11n and it keeps running for 1.5 to 2 days with extensive use.
Don't know how long the iPhone goes on with his battery though.

Only the samsung software for the PC is a pain to use I believe