OutOfFocus student

OutOfFocus student

Lives in United States Palo Alto, CA, United States
Works as a CS research
Joined on Aug 27, 2008

OutOfFocus student's recent activity

  • By line skipping I mean skipping rows or columns (or both). Yes the chart is horizontal so I'm referring to skipping columns.
  • Can you be more specific? Obviously the image goes through downsampling, and the question is how downsampling should look like in this situation. Pixel binning or other forms of local averaging ...
  • GH4 has 16MP sensor. How can it not downsample if 4K video is 8MP? Binning at some point in the pipeline does not preclude skipping lines late. Of course we do not have stills from GH4 in dpreview ...
  • As explained in my post, the stripes are well below Nyquist frequency for the sensor itself. So there are no artifacts on the sensor (check the studio still for A6000). The artifact was obviously ...
  • As explained in my response is the http://www.dpreview.com/forums/thread/3679988 there is no flaw in the argument. The artifact cannot result from the sensor itself but only from additional...

  • What you call a "flaw" in my reasoning was clearly ruled out in my argument. Of course sensor sampling itself can produce similar artifacts but the whole point of the example is that this whole ...
  • Full sensor read-out by itself does not imply better video quality and is not necessary for high quality video. In fact it looks like there are clear artifacts of line skipping done in...

  • Motion is not applicable to this video still and I do not claim that video quality in general can be judged solely from stills (but it's is enough for judging resolution and noise)
  • I'm talking about the video quality comparison widget from which I got the crop (can be accessed via A6000 review for example). It has GH3. There is no higher resolution since this is video frame.
  • First to clarify: line-skipping refers to skipping rows or columns of pixels when reading out the image. It is used in most DSLRs and mirrorless cameras when making a video since the ...
  • Commented on Sony a6000 Review preview

    That's a great widget for accurate comparison of video resolution. Thanks a lot, dpreview! It would be even more useful with the frame at different ISOs (at least every 2 stops). Finally being...

  • I'm not going to waste much time proving facts obvious to people who extensively use non-Sony gear. But one particularly funny point is your defense of Sony standard zooms for APS-C. I've compared ...
  • It's completely reasonable comparison for many users. Most people don't exchange lenses, or (as in my case) already have another interchangeable lens system. The cameras are similarly sized and ...
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