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difference between home theater and desktop calibration?

 
This forum is locked: you cannot post, reply to, or edit topics.   This topic is locked: you cannot edit posts or make replies.    CurtPalme.com Forum Index -> Audio & Video Calibration
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sh4dow



Joined: 01 Nov 2007
Posts: 16


Posted: Sun Oct 30, 2011 9:11 pm    Post subject: difference between home theater and desktop calibration?

since i'm trying to get the most out of my current monitor, i have spent days researching all kinds of colorimeters and software and at some point, i stumbled across various home theater calibration software.

and i asked myself: why?

isn't the whole point of calibrating your display (whether desktop or TV) to get a picture that is accurate color-wise, regardless of purpose? well... and (if you use a decent tool) choosing between things like a certain maximum brightness vs. specific contrast ratio, etc.
the only thing i can think about that might be different with TVs (assuming you use both TV and computer for consuming the same media) might be the tonal response curve. but considering that content on both PC and TV is usually following sRGB or gamma 2.2 (if what this article says is correct) anyway, that difference should be negligible?

what else is there that would make a calibration of a TV with e.g. lacie blue eye pro software or a calibration of a monitor with chromapure inappropriate?
although now that i'm thinking about it... is it that... usually, on a TV, the adjustments you can make on the hardware are a lot finer (e.g. gain and bias for individual channels) while on a computer setup, various tools will usually adjust the output of the graphics card in addition to rough RGB settings on the monitor?
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ChrisWiggles
Opinionated SOB


Joined: 12 Mar 2006
Posts: 2529
Location: Seattle

Posted: Mon Nov 14, 2011 10:47 pm    Post subject:

From a goal perspective they are the same. From a hardware perspective they are the same. From a measurement software perspective (to go with the meter) they are the same.

However, there are several computer software programs that are designed to create a software profile for the display, essentially adjusting inside the computer, rather than measuring and then user-adjustment of the display itself.

So if you want to create an icc profile type thing in your computer, then you need software that does specifically that, which is usually computer-oriented software.

Also regarding:
Quote:
but considering that content on both PC and TV is usually following sRGB or gamma 2.2 (if what this article says is correct) anyway, that difference should be negligible?


This is not true at all. Video levels are not 0-255 (sRGB). Gamma is a mess, but video gamma is also NOT 2.2, the endless websites that make that claim notwithstanding. 2.2 may work fine for video depending on taste and display, and some places are mastering to that, but 2.2 is not the video standard. Still, that's just the target your calibrating for, not really software-specific.
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sh4dow



Joined: 01 Nov 2007
Posts: 16


Posted: Wed Dec 07, 2011 1:16 pm    Post subject:

thanks a lot for the explanation Smile
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