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November 26th, 2006, 05:07 PM | #31 |
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Hey Tom thanks for doing the complicated tests, I know this is off-topic but it would be interesting to run your res test on the RED footage that is available -- just for some sort of wow factor perspective. I for one would like to know what sort of resolution divide we are dealing with between these cams.
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November 26th, 2006, 08:13 PM | #32 | |
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November 26th, 2006, 09:03 PM | #33 |
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Super job Tom, thanks a lot.
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November 27th, 2006, 07:10 AM | #34 | |
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November 27th, 2006, 09:31 AM | #35 | |
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-Terence |
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November 27th, 2006, 10:50 AM | #36 |
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Excellent explanation A.J., thank you.
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November 27th, 2006, 02:03 PM | #37 | |
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November 28th, 2006, 07:22 AM | #38 | |
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Very true. That's probably why no one has ever answered the question of how much vertical resolution is lost with frame mode. If anyone cares to donate a Canon A1 and Sony V1 to me (for a progressive control), I'd be glad to spend a day generating the data.... I was at the local trolley museum on Sunday with my nephew (who is very into trains), and now I have visions of Lionel trains carrying resolution charts in my head.... -Terence |
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January 1st, 2007, 07:01 PM | #39 |
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Updated Tests: (01/01/2007) XHA1, 60i and 30F
XH-A1 60i: (01/01/2007)
824.3 Lines Horizontal (MTF50); 810 Lines Horizontal = Limit@Nyquist 674.8 Lines Vertical (MTF50) XH-A1 30F: (01/01/2007) 823.6 Lines Horizontal (MTF50); 810 Lines Horizontal = Limit@Nyquist 592.2 Lines Vertical (MTF50) Previous Reported Result for XH-A1 24F: 810 Lines Horizontal (Limit@Nyquist) 590.4 Lines Vertical (MTF50) Previous Reported Result for Canon HV10: 784.5 Lines Horizontal (MTF50) 704.8 Lines Vertical (MTF50) ************************************************** I re-ran the XH-A1 test for 60i and 30F for a baseline. The results are normalized for standard 2-pixel sharpening. Everything is consistent with, in fact nearly identical to the previous run. The finding that 24F loses a bit of vertical resolution compared to 60i holds true for 30F as well, about 12%, not much and hardly observable if at all. Limit@Nyquist means the camera has reached the resolution limit of the HDV format in the horizontal direction. 810 x 16/9 aspect = 1440. Remember, horizontal resolution is expressed per picture height. http://vsdrives.com/graphics/resolut...1_60i_Horz.PNG http://vsdrives.com/graphics/resolut...1_60i_Vert.PNG http://vsdrives.com/graphics/resolut...1_30F_Horz.PNG http://vsdrives.com/graphics/resolut...1_30F_Vert.PNG |
January 1st, 2007, 08:40 PM | #40 |
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Thanks Tom great work. That HV10 still amazes me... what a steller little cam. *still pondering wether to wait for a HV10 mk2 or not*
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January 2nd, 2007, 02:48 AM | #41 |
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Is it also possible to run this test with different settings for sharpness? Or isn't the program 'fooled' by this because the actual resolution doesn't change?
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January 2nd, 2007, 10:36 AM | #42 | |
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That's not to say your own eyes can't be fooled. Since sharpness emphasizes the contrast on edges, higher contrast and sharpening lends more punch and the perception of resolution. |
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January 4th, 2007, 09:42 AM | #43 | |
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