best buy offers hdtv calibration: how does it rate (details inside) - Page 14

honestly, I suggest you don't spend money on a calibration from any Professional Video Calibrator..


simply make the adjustments as you see fit

was there a point to that post?

cliff's notes, anyone?

If one doesn't think that calibrating a display to the "standards" (commonly D65 and Rec-709) which results in being able to more accurately display an image as the director intended, then there is no real need for a calibration...........

Personal services by a professional calibrator will vary, their goals shouldn't....... Their results may vary due to skill level and equipment.......

glen, turbe's post i understood...

the mental masturbation post is what i got confused by...

You are missing the point....... even if one is color blind, or let's say one only sees in B&W, the shades of gray all change with color and if the shade of gray for flesh tones is off, it doesn't look right...... Moving on to colors, if one sees reds differently than others, if that red is not the right color, it really doesn't matter how you see it, it will be different than it should be.

If you get taken in by bold, vibrant, excessive colors, then you may not be a candidate for calibration, if you want simple things like flesh tones looking as natural as possible (considering the source is accurate and natural) you will need a grayscale calibration and possibly color gamut if the display has that feature.

Color perception varies between individuals.
Most eyes have three types of cone system most sensitive to Green, Yellowish-Green, Bluish-Violet simplified to RGB. Up to 10% of women have a fourth type of cone most sensitive to Bluish-Green, eyes also have rods, all these sensors respond to a wide band of overlapping frequencies each with their own bell curve like response dependent on the frequency and intensity of light. Defects in one or more of the genes encoding red and green pigments leads to varying degrees of color blindness in almost 10% of men. Less common is green-blue confusion. Also some people are completely lacking in one of the three types of cone systems and only require two types of cones to match all the spectral colors they can see. Subtle varations in color perception occur even among individuals with normal color vision due to polymorphism in the red pigment gene. For men 62% have amino acid 180 in a srine residue while in 38% it is a alanine residue. For women their are three types homozygotes for Ser180, homozygotes for Ala180 and heterozygotes who display an intermediate phenotype. When matching the intensity of red and green, the intensity of red needed depends on the amino acid at position 180. Different people can distinguish a different number of distinct hues particularly orange-red hues.


Displays are more narrow band than the real world and trick the eyes by stimulating the three types of cone systems and the rods in the correct ratios to fool the eye-brain into see the full range of color hues. But individuals vary in their ability to discriminate between hues and the proportion of stimulation needed from each type of cone and the rods to produce the perception of different hues. The perception of color also depends not only on the stimulus wavelengths and intensities, but also on difference of intensity between regions and whether the patterns are accepted as representing objects. The brain plays its part as well as the eyes.

As long as the display is reasonably wideband for each color (which current displays are), I would expect it is going to be mimicing reality for the individual reasonably well. Human perception is also color adaptive for different lighting conditions so that helps. When you use very narrorow band frequencies for colors (possibly future led dlp or laser displays) you start to get more obvious problems with variations between individuals as to how display primaries combine to produce the perception of secondaries and other color hues. I believe that digital cinemas choice of red primary was effected by the consideration of the variation in human perception

Here's what I say to that: I have never had anybody spend serious time with an accurate, and high-quality image not be blown away by how "good" "pleasing" "amazing" or whatever nonsensical subjective word you'd like to insert, the image is. In my view, those words are only meaningful in describing the accuracy of the reproduction, but my point is that for people who just want something most pleasing to the eye, if you actually spend time with a variety of images and actually care about how "good" they look, you will invariably end up with an accurately calibrated reproduction chain. Because when you do view content that should appear natural, it will appear natural, and that will look simply amazing. With whatever willy-nilly preferred nonsense you might arrive at, it will never appear natural.

That being said, if you don't believe or care about quality images, don't get your display calibrated. Just don't pretend that you care about image fidelity. It's a free country, do what you want. Nobody is forcing you to get the best TV you can, or get the best picture and sound you can. If you like horrible images, or like horrible sound, great!

I had my Samsugn b58860 calibrated along with my Pioneer 50"5010 this past Saturday.
All I can say is "WOW". There is more detail, shadows, I'm very pleased with the results.

what a difference calibration made on both sets, the Pioneer looks better but extremely happy with my Samsung.

Since this topic (it's old) is most relevant to my situation ...

I just bought a PDP-6020 from BB with calibration service. i was told:
1. needs 100 hours to break in
2. ISF calibration
3. takes about 1-2 hours.

Based on what i read, these seem to be reasonable.

I also read that the PDP-6020 is not adjustable. Maybe it means not menu-adjustable but still service-adjustable? Otherwise, i do not see how BB can do any ISF calibration.

Is it possible to store 2 calibrations settings (if necessary): one for DIRECTV and one for Blu Ray?

Thanks for advice.

Some BB calibrators are excellent, some are absolutely terrible.

If the BB guys were professional, they wouldn't be using chroma5s to calibrate displays (if they still are; I could be mistaken). Ask if he or she can provide information that their meter is traceable to a standard and that it has been re-certified at the recommended intervals. Please don't let these guys rip you off. This is too nice of a display.

The 6020 is adjustable. You just have to get into the service menu. It's not a place that I'd feel comfortable letting some dude that drives a geek squad volkswagon bug into.

They might actually do a good job though, you never know. For me however, I'd hire someone based on word of mouth. Even independent calibrators aren't all equal. You're in the right place if you want to find a real pro. It's around the same price as the BB version usually.

Thanks so much for your input!

i got the calibration included when i paid for the 6020. So i need to ask the right questions to the right calibrator.

I am still unsure if 2 settings are required: night vs day; or different video sources like DIRECTV vs BLU RAY??

Thanks again.

Output from the direcTV box isn't really differnt than blu-ray.

The content is all over the map for TV, so you just calibrate to standards and that's about the best you can do.

I think you may be referring to a different meter. Chroma 5's (at least newer ones) are NIST traceable and come with the documentation to prove it. This meter is perfectly fine to use on a plasma display such as the 6020. Perhaps you referring to the Colorpro Puck III or IV. Either way, a mediocre instrument in the hands of someone who knows what they are doing can yield light years of differences compared to a person with $25,000 in equipment and no common sense. Best wishes!

Yes, I believe I'm incorrect about the chroma5. My apologies. I'd still ask for a current certification for the meter.

Grayscale can be adjusted through service menu, color gamut can not.

where do you live?

I live in Houston.

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As for the BB calibration, I am a little confused now.

Compared to the PRO-151FD, most reviews had some concern about the color inaccuracy of the 6020. And that the color is not adjustable (I hope they mean not user menu adjustable).

From reading the posts here, my understanding were that greyscale and color and whatever else are service menu adjustable. The calibrator just have to have the right tools.

Now one of the comments says that the greyscale is adjustable but not the color gamut? Could someone please clarify.

Thanks again.

I also just got the 6020FD from BestBuy. Would using the D-nice settings be good enough vs. ISF calibration from BB? I am not sure if I would be able to tell the difference. Thanks.

Dnice's settings can often be as far off from accurate as the stock settings.

You are far better off getting a calibration from best buys.

Really? Please provide data to prove that making sure the display(s) you are attempting to discredit my settings with are within the parameters set for the displays my settings are specifically designed for. I assure you that I have multiple calibration files that document how my settings are FAR better than the stock settings. Let me be very clear, my settings ARE NOT a substitute for a real calibration. However they are FAR better than anything that comes OOTB or via a "calibration" disc.

Could you please advise as to whether the color is also adjustable in addition to just the greyscale for the 6020?
Thanks.

Yes, the master color control can be adjusted, but the 6020 does not have a Color Management System. Meaning, the individual colors cannot be adjusted. You are pretty much stuck with the color gamut that is provided...unless you add an outboard unit. Best wishes!