:confused:Hello, I know this question has been asked before, I saw it on an earlier post.
Maybe there is an updated answer to this question.
I have a LN40A550 and I am trying out some of the calibration settings that are on this thread.
One problem I notice is shadows, especially when I am in the 'Dynamic Mode' (which I like).
The shadows on some scenes are black with very little or no detail to them.
It is very noticeable on sunny scenes.
Is there a setting, adjustment or a calibration setting that will correct this?

Yes, take the set out of dynamic, it sucks.

You must adjust black level (brightness) with an appropriate black level pattern.

Recommend using Movie mode on the samsungs, color temperature on warm1. Dynamic crushes the begeeezus out of your blacks, and is just generally terribly inaccurate and looks like feces.

Yes, take the set out of dynamic, it sucks
This one comment alone should probably be a sticky on every single page here.

DYNAMIC PICTURE MODE IS AS IF YOU WERE FORCED TO READ EVERYTHING IN CAPSLOCK WITH NO PUNCTUATION OR PARAGRAPH FORMATTING WHATSOEVER IN OTHER WORDS IT IS TERRIBLE IRRITATING FATIGUING AND GENERALLY ANNOYING TO BE FORCED TO WATCH SUCH A HIDEOUS OVERLY BRIGHT BLUE OVERSHARPENED OVERSATURATED EXCUSE FOR A PICTURE

yep. ;)

I'm about to calibrate the same tv. And I've been thinking about brightness as well, so this seems an appropriate thread to post my question on since it's a general question and not specific to the a550:

I've seen on Kal's guide two ways to set brightness: one way is to force 10 IRE and 100 IRE to fit the same gamma, the other way is to just barely not clip 2% above black.

If the gamma curve is not linear, and no gamma settings can make it linear at less than say 20 IRE, which method is the right one to use?

Greetings

Try both ways and see for yourself. Different on different TVs.

regards

:confused:Hello, I know this question has been asked before, I saw it on an earlier post.
Maybe there is an updated answer to this question.
I have a LN40A550 and I am trying out some of the calibration settings that are on this thread.
One problem I notice is shadows, especially when I am in the 'Dynamic Mode' (which I like).
The shadows on some scenes are black with very little or no detail to them.
It is very noticeable on sunny scenes.
Is there a setting, adjustment or a calibration setting that will correct this?
http://www.avsforum.com/avs-vb/showthread.php?t=1021933
http://www.avsforum.com/avs-vb/showthread.php?t=1055906

Greetings

Try both ways and see for yourself. Different on different TVs.

regards

Surely, this can't mean he should set brightness according to which one he thinks looks best, and then call that calibrated? :confused:

Greetings

It's called compromise. Figure which parameter is more important to you ... since you can't have both.

regards

If the gamma curve is not linear, and no gamma settings can make it linear at less than say 20 IRE, which method is the right one to use?

As Michael alluded to, you have two choices:

You can set brightness using a black bars/pluge/254 step ramp pattern so that all detail above black is visible (for example, the 2% bar is visible) and live with whatever gamma you get at the low end with this setting.

or

You can lower brightness to flatten out the gamma response at the expense of crushing lower end details into black (e.g. everything below 4%).

I would recommend choosing the former compromise in order to preserve details that are meant to be visible, even if barely so. My Samsung also has a "non-linear" gamma response. With brightness set so the 1% bar is just barely visible, my gamma at 5% is around 2.0 with 10% rising up ~2.1 and then at 20% rising up to ~2.15 before hitting 2.22 (the hitch or S curve shape) at 50% and rising up to 2.25-2.3 the rest of the way. Also, remember that the grayscale color balance will also affect the luminance response - with green making the biggest change. Thus after you've done grayscale, make sure to go back and re-check your brightness setting.

hope this helps,


--tom

Thanks for the input everyone!

It ended being a non-issue, because my eye-one simply could not measure values below 30 IRE accurately at all!:p

So I was forced to set it by pluge, with 2% above black just barely visible.

I had to go around and around on contrast, brightness, gamma and the white balance controls many times. No wonder it's so hard to find the right settings. Everything really does seem to effect everything else!