ggbutcher

Joined on Jan 13, 2015

ggbutcher's recent activity

  • My apologies,  I thought you were asserting no difference between the convert and assign images. Your warning is prudent. Right now,  based on discussion in another forum,  I'm messing with ...
  • Yes just what I'd expect. If the second image is 'convert adobe->srgb'  the colors should look similar if, say, relative_colorimetric rendering intent was used. If the third image is 'assign srgb ...
  • "Assign" really means that the image is already in the color space the profile describes, and you're placing that profile in the image for other software to know how to interpret the colors. ...
  • Even with what looks to be close enough on the outside, there's scaling done right after capture that make differences. If the raw processor opens the file, I'd probably make a camera profile of my ...
  • If you're pulling the wooden one, it's hard to tell...  :D
  • That's funny.  Straight out of a Nikon D7000, the only real processing was to scale the image to fit the display range, which all raw processors have to do at some point.  It was just a beautiful ...
  • It's about the specific camera's spectral response. That has to be characterized, usually through making shots of a target with specific color patches, and using them to produce a 3x3 matrix of ...
  • Okay, here's a raw file.  The only thing that has been done to the data out of the file is to convert it from 16-bit integers to 32-bit floats, only because that's the internal format for this ...
  • Reading the photographylife.com review this morning, it finally dawned on me: 1. The Z7 is just the camera they needed to not upset the D850 apple cart. 2. The Z6 is likely the camera they need to ...
  • Passable DIY negative conversion isn't actually that hard.  If you have PP software that does per-channel (RGB) curves, you can get a really good starting point by first cropping the image to  ...
  • Richard, excellent post.  Gave me pause to think more about the specific environments, and to tease the essential problems out of the situation. The main thing you pulled me back to was the source ...
  • Here's what I started with: Here's what I ended up with after 'scooching' the blue Y value in my profile down a bit, per the dcamprof discussion on extreme blues such as this: It's still not great, ...
  • Good point, lighting during a performance changes significantly.  I'm holding out some hope for what I do, choral concerts where they set the lighting one way for the entire performance.
  • I'm having similar challenges with colored theater lights. I've tried various hue and saturation manipulations with limited success, so I'm currently investigating dealing with it earliest in the ...
  • Yes, Quill Lake: https://www.google.com/maps/place/Lake+Quill/@-44.8213652,167.7280167,497a,35y,333.51h,58.35t/data=!3m1!1e3!4m5!3m4!1s0xa9d67872e554ca5f:0x2a00ef86ab644800!8m2!3d-44.8085222!4d167. ...
  • Replied in Purple
    Thanks. I'm experimenting with a camera profile built from an image that was only demosaiced, that is, before whitebalance. So, whitebalance is handled as a full chromatic transform, instead of ...
  • Replied in Purple
    I've been messing with a camera profile that incorporates the white balance...
  • It simply could be that you have a bunch of neighbors using the same channel.  Take a look at the available access points in your Network window to get a rough idea. I connect all our streaming ...
  • Replied in Tif(f)
    I'm going through a revisit right now for this: In a discussion on another board, it was pointed out that multiplier-based white balance isn't fully considering the camera's color response, and it ...
  • I guess I'd say "straight to print", but for me that could be print, could be web. The only time I save a raw-processed image to a file not destined for display is as TIFF to open in something like ...
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