October 26 2008 - Photo Jottings

October 26 2008


I’ve wrapped up most of the work on the A900 review.  I’m still having some trouble getting meaningful results with IDC, though I messed up when I said I was able to tweak a 1/3 stop of highlight recovery, my fault, I’m getting about a full stop.  I haven’t checked ACR yet.

Random thoughts; focusing is better on the A900 than the A700, though I didn’t initially notice it until I started doing my comps, then it showed up.  I can’t say I notice any dynamic range differences between the two cameras, and I’ve done a lot of testing.  TIFF conversions run almost 70mb!  The A900 tends to underexpose as compared to the A700 by 1/3-2/3 stops, that’s good though.  Macro shots are very similar, but the APS-C still has the edge.  The super wide angle KM 17-35mm F/2.8-4 lens shows really bad flare and ghosts when the sun is near or in the image, and a GND filter causes vignetting, I’ve put up some samples at the bottom of the review page.  And one last item; check out how you can get a 14mm shot with your Sigma 10-20mm lens, I posted samples of this too.  Go to the bottom of the page to check out all this and more.

In APS-C mode the auto crop is 3984×2656, for 10.6mp.  Sony uses “11M” (MP) on the camera, but other sizes are listed as “5.6M” or “2.6M” etc and match up correctly.  Hmmm, is that what they call a “market” adjustment?  On second thought, I guess there aren’t enough characters, or can’t add a point.


14mm APS-C shot
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