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04-07-2013, 11:11 AM   #1
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A*300 compared to DA*300 on Q

https://skydrive.live.com/redir?resid=2D01AE85E70E90E2!146857&authkey=!AFj0HmRV-SUXi_M

Sorry about the boring subject, but it has some highlights and strong contrast and I feel it was suitable. Both test images are taken with f/4. The adapter I used on Q is a cheap one which probably generate some stray light inside and perhaps this is more noticable for the A300 as this is a FF lens.

It shows that DA*300/4 is a very good lens as it is sharper wide open than A300 stopped down to f/4.

04-07-2013, 01:12 PM   #2
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Not boring at all for those of use that shoot the Q with big glass attached. I see the slightly better contrast in the da300 version but its properties say f/6.7 and since there is no aperture ring I assume you just used the adapter to keep it wide open. But why does it show f/6.7? The bokeh is different enough between the two shot for me to believe the da300 was using a smaller aperture than the a300. No doubt I am merely guessing and whatever you say the facts are stands. Thanks for the comparison!
04-07-2013, 01:56 PM   #3
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I took two photos of the lenses and Q with a K-01 at f/6.7. Are you sure you haven't looked to long on them?
04-07-2013, 01:59 PM   #4
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The cropped images are 1420 pixels wide and 2.18mm on the Q sensor. A similar 2.18mm crop on a K-5 would be 460 pixels wide. Or an image of 0.14 megapixels.

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