Or maybe a DA*100-400...

I have to say that My Sigma 150-500 focusses at least as fast and I would say faster then my DA*s on my K20d. Another thing I noticed was that if the battery was a little low, SDM/HSM focussing seems to suffer.

I have downloaded Gimp and tried that to re-size.

1/. Using cubic

[IMG]http://i217.photobucket.com/albums/cc222/Oggy3323/IMGP1629.jpg[/IMG]

2/. Using Sinc

[IMG]http://i217.photobucket.com/albums/cc222/Oggy3323/IMGP1629a.jpg[/IMG]

3/. Using ancient Paintshop Pro

[IMG]http://i217.photobucket.com/albums/cc222/Oggy3323/Imgp1629b.jpg[/IMG]


Any thoughts appreciated.

Here's a little curiosity. The price of lenses has near doubled, but the price of a K20d body has hardly changed. Odd.

I bought the K20 for it's heavy chunky feel and find the grip adds to it.

We agreed a price based on Ebay prices. Yelvertoft posted it quickly and it was well wrapped.

I have had a couple of plays with it with some reasonable results and some not quite so good. It doesn't seem to like my DA* 300, but is not bad with the 60-250. Will update if anyone is interested.

I took the DA*16-50 and the DA*60-250 to the Festival of Speed at Goodwood to see how they work as a team.

[IMG]http://i217.photobucket.com/albums/cc222/Oggy3323/IMGP1542a.jpg[/IMG]

50mm F8 1/500th ISO100


[IMG]http://i217.photobucket.com/albums/cc222/Oggy3323/IMGP1550a.jpg[/IMG]

50mm F8 1/250th ISO100


[IMG]http://i217.photobucket.com/albums/cc222/Oggy3323/Imgp1625.jpg[/IMG]

43mm F5.6 1/2500 ISO400 (Who forgot to drop the ISO after some fast shots :blush


[IMG]http://i217.photobucket.com/albums/cc222/Oggy3323/Imgp1626a.jpg[/IMG]

50mm F5.6 1/125 ISO400


[IMG]http://i217.photobucket.com/albums/cc222/Oggy3323/Imgp1628a.jpg[/IMG]

50mm F5.6 1/200 ISO400


[IMG]http://i217.photobucket.com/albums/cc222/Oggy3323/Imgp1666a.jpg[/IMG]

220mm F6.3 1/1000 ISO400

C&C welcome, thanks for looking.

Thanks for the replies.

PSE is on my shopping list, but having just bought three DA*s () I'm going to have to hang on for a while. I have made a case for having it at work as I do a bit of technical authoring but it hasn't turned up yet.

Is increasing the sharpness likely to make the aliasing worse?

None of the pictures I have posted have been any near the quality I see them on my screen. Loss of sharpness, aliasing etc.. Obviously there is going to be some loss of IQ in reducing a photo to 800 pixels wide, but others seem to be able to cause less degradation to their pictures.

I have tried using Pentax Photolab and raw therapy to create an 800 pixel jpg from raw, and resizing the jpg using Paintshop pro (ancient version).

My photos are hosted on Photobucket - don't know if it makes a difference.

I second Mannesty's warning about the voltages inside flashguns.

As to the alkaline/NiMH thing, although the open circuit voltage of an alkaline is higher, so is it's internal resistance. This means that as you start to draw current the voltage of the alkaline will fall away faster, and at some point the voltage of the NiMH will exceed that of the alkali battery. This is why a flashgun which takes 6 seconds to recharge on alkalis may only take 4 seconds with NiMHs.