just Tony

Joined on Jun 28, 2012

just Tony's recent activity

  • My results look pretty nice considering my data was collected under an LED with CRI = 80. Note: I made no attempt to convert my supposedly 5700K illuminant as if it was collected under a 5000K ...
  • Or non-tiny panoramas.
  • In a scenario of keeping the nozzles primed during a long vacation, a UPS is an excellent idea. Even a short interruption would be too much. In a Windows PC the way to go is to place the computer ...
  • (It's a good thing I'm not trusting the built in LED emitter. Even though it is stunningly uniform in projected color and intensity, the color rendering index is only 80.) I calculated some ...
  • Garbage in, garbage out. Maybe that term is a little harsh but I don't know the spectrum of the white LED in this device, so there's only so far I could trust the data. I'm tooling up for a 5000K ...
  • What do you think about my Cyan patch result? Would you say that I have a poor instrument, or is that a poor example of cyan on the chart? Or I made simplistic assumptions about the response of the ...
  • [Late Edit] I wrote the following while Iliah posted his analysis, and my conclusions about neutrality are slightly different. Note that these readings were also collected under illumination of ...
  • My initial observation is that the tapered shroud which I had printed from SparkFun's supplied file, is a beautiful fit into the patches of the ColorChecker Classic. Those thin black ribs secure ...
  • I have one of those. I spent too long building a light shield between the LED and the sensor. Shouldn't be a problem with an external light, which I'm not perceiving as a barrier lately. Thanks ...
  • Replied in Optical shroud
    The white LED (visible just above the sensor) is not at an ideal location. It would pick up too much surface reflection. A slight modification to the solid model file will include one or more side ...
  • The sensor pictured above in the board from SparkFun is not the item that is the subject of this thread. It's the sibling AS7262 which has this set of sensitivity bands: But it's something I can ...
  • That device looks like a real gem, I think I need one and 1-3 months wait is not too much. Thank you for that link. Right now I'm making use of a superceded spectrophotometer at work that was just ...
  • I know that I don't know some things. Most important of all is to discover what are the categories of things that I don't know. ;-) I don't mind being ignorant at the beginning of something, that's ...
  • Better than the roughly $3000 price I first laid my eyes on... At that point it would be extremely safe for me to say that I'll leave the work to those who are already playing the game.  ;-) I see, ...
  • Which model(s) look suitable to you? What's a reasonable spectral bandwidth? Unfortunately I'm seeing that some of them are priced significantly higher than what I would expect to pay for a ...
  • Sure, in the same sense that "the heart is a muscle". Read a little further into the datasheet and you'll see the last stage of optical management that such an instrument would require is already ...
  • Created discussion thread DIY printer profiler?
    I have a question for the color scientists in this forum. If you had a 3-channel light sensor with these pass bands, is this the fundamental data that can be used as the basis for a printer ...
  • It definitely could look weird, depending on the subject matter. On some other subjects, maybe not. If you kept the width at 36" then the height of the cropped image would be 19.23". You seem ...
  • Correction: they have links available. No profiles yet.
  • Well, at least that is the easiest solution to define . ;-) First up I'll see what is revealed by soft proofing. Red River has some profiles available.
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Total messages 1632
Threads started 31
Last post 3 days ago
Total comments 7
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Last post 3 months ago
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Last entry Aug 17, 2015
Photos uploaded 84
Last upload Feb 15, 2013