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04-25-2008, 03:25 PM   #1
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DA* 300mm samples

Just got my new DA 300mm and took a few snaps with my k10d for anyone who may be interested. raw processed with capture one v4 default sharpening just adjusted levels. Seems to under- expose some w/ my ds screen so I put the stock one back in when I got home. Here's a 100% crop at f8

100% at f4



100% f5.6

Here's one uncropped against a bright white sky with the sky pushed about 1.5 stops over clipping at f5.6


I'm pretty impressed! and it is no bigger than my old tamron 80-200 f2.8

04-25-2008, 03:35 PM   #2
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I like the first and the last ones. Dang, that is a sharp lens!!!
04-25-2008, 03:36 PM   #3
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Can see the sharpening in the blue birds feather highlights, but the fact those highlights are there to sharpen bodes well for the performance of the lens. Looks quite good, thanks for posting. These are all handheld then?
04-25-2008, 03:56 PM   #4
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They were hand held, I posted crops so you'all could get an idea what you'll get if you get one. I was saving for a while for it and it looks pretty good to me. I might have to sell my old tamron 300 f 2.8 as the da seemed ok with my 1.7tc ( the kenko 1.5x used the usm and hunted like crazy, have to test it further) I just shot this of my azelia up close - razor thin DOF at f 5.6


04-25-2008, 04:10 PM   #5
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Here is the same bird in pentax photo lab with no sharpening (gnatcatcher ?) 100%
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04-25-2008, 04:50 PM   #6
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Thanks for posting those, Tom. Those were very helpful. I'm getting increasingly excited about this lens.
04-25-2008, 06:34 PM   #7
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Thanks for the sample images. Great subjects btw

I thought the optics are sharpest at f5.6 then diffraction kicks in after f8

Still a great performer and love to see more shots. It really costs a bit. Not sure how you feel regarding the tracking autofocus?
04-25-2008, 07:16 PM   #8
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The grey bird was really tiny, the fence post behind him here is about 4inches. I am anxious to see how it does on flying things. I don't expect the usm to be much if any faster but really like the size and weight compared to my 2.8. It should be easier to keep the subjects eye in the af point anyways.


04-26-2008, 12:31 AM   #9
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Most of the images are down at the time of looking, apart from the gnatcatcher (most recent post) which looks very good. Surprised you are having trouble with your Kenko 1.5x Tom. I did a quick test with my Kenko 1.5x and the DA*300 when it arrived the other day. It used the SDM. It did hunt a little sometimes but locked on fairly quickly to the target. I wonder if the hunting was due to a low contrast subject. Perhaps it depends on the version of Kenko TC being used. I'll be doing more tests soon.

Paul
04-26-2008, 03:03 AM   #10
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Hey Paul, I only tried the kenko breifly yesterday but I'll try it again today, mine is the shq pz not the dg version if it makes a difference. Zenfolio is doing maintenance is why the pics are down I have to go to work for a bit so I'm taking my kit
04-26-2008, 03:42 AM   #11
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The Kenko 1.5x TC I am using is the DG version Tom. Perhaps it makes a difference. I also have the 2x MC7 DG but I can't get that to work with SDM though superficially the contacts seem the same, but I'll have to have a closer look. This is an older TC though. I have to manual focus with it. It may be insufficient light though the instructions say it should autofocus with lenses with a full open aperture of F4 or brighter. I had hoped I was going to get away with it.

Paul
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