Chris63 wrote:
Truly, there seems to be not an objective way to detect a "true" color. If I take a photo, display it on my (even if calibrated) monitor, I still need to refer to the image I retained in my mind, and compare it to the monitor's image. My memory may not be accurate.
So, is a "true" color the one most pleasing to the viewer?
Things are not nearly so chaotic as some responses would suggest. Yes, we don't know if we're all seeing, hearing, feeling, tasting, etc. the same thing in the same way. But we have time living together to explore and investigate those questions. I know my wife and I don't taste especially bitter things the same way. We've been able over the course of 40 years to figure that out.
Experiencing color is a question that's been investigated pretty extensively and we know a lot about it. For example we can conduct tests. Try this one:
https://www.xrite.com/hue-test We can give that test to 50,000 people under controlled conditions and learn from that how well humans can discriminate subtle color differences. You mention above that your memory may not be accurate. We already know it isn't. Humans have excellent ability to discriminate subtle color differences and poor color memory. We've done those tests.
We have tools that can measure color. Back a page Gene mentioned he has a color checker passport. That's a color measurement tool made for photographers and graphic designers. I have one as well; Gene and I use them. You get a little piece of cardboard for $120.00 and they put it in a nice plastic case. Why so much for a piece of cardboard with color swatches on it? It's manufactured to very high tolerance so that all of us using that tool have the same color swatches.
We have calibration tools for everything in the chain between the color of our subject and our final image. Most amateur photographers don't use all those tools and get fussy over subtle differences in color and that's appropriate -- pleasing color rules and what really matters is if you and the people you share the photos with like the result. But the tools are there: imagine that a product manufacture that sells their product associated with a very specific color, say Coke red, wants an advertising photo and the photographer doesn't have the skill and tools to reproduce that color accurately and it comes out a tad orange. You think the folks at Coke will just shrug their shoulders and say, "well it still looks pleasing."
It can be a pain to use all those tools and certainly more trouble than it's worth for the average snapshooter to chase after. So the camera manufacturers have added "best college try" algorithms into the cameras to fill in instead -- auto white balance for example. You can white balance accurately with a tool (that color checker passport) or you can just let the camera handle it. Trouble is the camera can't take the proper measurement to do that job and so it's auto white balance algorithm contains a degree of shall we say educated guessing. It often gets close (which works for most snapshooters) but it's often not really accurate. Which is fine because as humans they can't remember the original color anyway.
Muddying the water then the camera makers do tests to see what people like. They have the tools to engineer the cameras to generate accurate color especially if you get an accurate white balance set, but is that what sells more cameras? So instead we get competition between the brands over their versions of "pleasing color." Fuji as others have noted has made this one of their big marketing pushes. In your Canon G7 you have options to change the Picture Style which will alter the color response. You can chose Portrait, Landscape, etc. and those are not designed to give you accurate color they're designed to give you pleasing colors that sell.
If you do want to pursue increasing color accuracy you'll need to start adopting some of the tools we use to do that. The first two big steps are a calibrated monitor to view the photos and taking control of white balance as opposed to relying on auto-white balance. Your camera contains a function to set a custom white balance. It's in the menu listed as Custom WB. Try it.