xpatUSA

xpatUSA

Lives in United States Bellville, TX, United States
Works as a Retired Engineering Consultant
Has a website at tcktek.blogspot.com
Joined on Dec 15, 2011
About me:

Mostly interested in Foveon technology.

xpatUSA's recent activity

  • Replied in The Answer?
    Not quite, Jan. Keeping it simple, the X3F contains the completely un -processed data from each layer - hence "raw", meaning not processed at all. It's literally what the sensor saw. It's not quite ...
  • Oops, I did read that, duh, but - in one ear and out the other . . . :-(
  • We see that one has horizontal banding, one does not - but why does the pole have halos in both images? Would not expect to see halos in a raw layer image.
  • Thanks! Fortunately, I don't print, so the SD10 resolution is good enough for my purposes. :-D Using 5.5.3 because I bought a Merrill and because 3.5.2 doesn't work correctly on my new 4-core Dell. ...
  • Well spotted! Helmets different too. I think the Q looks more accurate, color-wise. Poking around with a Lab color-picker reveals a more neutral white plastic and a significant hue rotation towards ...
  • Replied in Bruce . . .
    :-| In case "Bruce" (R.I.P.) is not well-known here: https://www.amazon.com/World-Sharpening-Photoshop-Camera-Lightroom/dp/0321637550
  • Replied in The Answer?
    I never said you shouldn't. Did you not see the raw histogram that I posted above? FYI, it was from a shot with a 700nm Marumi filter on the lens. I never said it was. Mapped? They use matrix ...
  • Replied in Sharpening
    I'm not sure why Kalpanika keeps getting mentioned by you gentlemen. Is it supposed ( or even designed) to be "superior in resolving power" or have "more resolution" than SPP? I ask because I ...
  • Looks like qty. 32 or so APS-C from this die - probably Quattros: As Roland might say, hmmm . . . For "MF" are we actually talking about 56x41.5mm sensors i.e. 645 ? Or, a bit like the Quattro H, ...
  • Replied in The Answer?
    I tried an IR RGB color export from SPP and decomposed it in ImageJ and also in the GIMP. In both cases the blue channel was almost black (because that's what SPP does when it tries to render an ...
  • Hi Arg, An FSV comparison view of your images, to more easily see the difference: Some time back, I was comparing the two methods (RD vs. SPP mono) as regards IR work. As you know, the closer I get ...
  • Replied in Sharpening
    Not sure what you mean but here's some: http://kronometric.org/phot/iq/res/6zones5600.jpg http://kronometric.org/phot/iq/res/JTF144_RedBlue_720PPI.png http://kronometric.org/phot/iq/res/starBY-FSV.png
  • Since I only use 5.5.3 for converting X3Fs, that bothered me a little because my suspicion was centered on CS5 and your suspicion is centered on SPP 5.5.3. I did read your earlier post about ...
  • Replied in Sorry
    Not on my newly-acquired Win 7 Dell Core i5 it ain't . . . Meaning I'm stuck with 5.5.3 for ever . . . come back XP - all is forgiven!
  • That can perhaps be explained by the spectrum of light reflected by those areas. In other words, different spectra might look similar in color but not be interpreted the same by the Foveon. ...
  • That sounds really horrible and the sunflower color differences were a little surprising too. All Foveons, or just the Quattro models, dare I ask? I'll second that based on early experience with ...
  • I too have the 8-16mm and would recommend it compared to the 10-20mm (which I've never used though). Both are tested here for what that's worth: http://www.imaging-resource.com/lenses/sigma/8-16mm- ...
  • Off-topic and with all due respect, Mike, did you really mean to use these settings in SPP? I ask mainly because the saved X3F contrast, shadow and highlight settings combined with that much fill ...
  • Created discussion thread A short walk with the SD10 . .
    . . just down the street, with the 17-50mm on it - not the sharpest lens on the block. Wanted to re-acquaint myself with the good old house-brick and it's pros and cons. :-D Reviewing the results, ...
  • Replied in Split Toning . .
    . . had to look it up to see what it is, Carl :-( Only to find I've done in the past, without knowing the correct term. I used the RGB curves in RawTherapee to "color" different levels (tones) in a ...
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Total messages 7831
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Last post 11 months ago
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Last entry Aug 11, 2014
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Last upload Aug 11, 2014