screen brightness in cd/m2?

Lemaildetom

Lemaildetom

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thomas
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What brightness do you go for?
My screen calibrator recommand 120cd/m2 without taking into consideration the surrounding light.
In dim lightning it recommand 90cd/m2!

I have settle for the first but even this sometimes seems a bit dark? What is your choice?
 
It all depends... no one can tell you what luminance you should use.
Lots of variables that will affect your final figure, All I will say is that 120cd/m^2 is often too high, but it may not be if you work under high levels of ambient illumination. ;)

What is your final intended use for the images?
 
PhilH04 said:
It all depends... no one can tell you what luminance you should use.
Lots of variables that will affect your final figure, All I will say is that 120cd/m^2 is often too high, but it may not be if you work under high levels of ambient illumination. ;)

What is your final intended use for the images?
Click to expand...

I usually work in dim light!
Final use is mostly watch and share on computer but occasionaly print the odd photo for photo albums

sk66 said:
A good clue is that the whites on screen should be about the same brightness as a piece of white paper in the same environment (maybe a touch brighter).
Click to expand...

Interresting, so in dim light this is pretty dim screen then! I often find 120 cd/m2 is too dark but you both suggest i could go lower. Interresting!
 
Lemaildetom said:
I usually work in dim light!
Final use is mostly watch and share on computer but occasionaly print the odd photo for photo albums

Interresting, so in dim light this is pretty dim screen then! I often find 120 cd/m2 is too dark but you both suggest i could go lower. Interresting!
Click to expand...
How are you determining it is too dark?
 
PhilH04 said:
How are you determining it is too dark?
Click to expand...

No technic really, just that if you think into the screen brightness i'm usually set a bit bellow the 50% mark s the screen can go way brighter!
 
Lemaildetom said:
What brightness do you go for?
My screen calibrator recommand 120cd/m2 without taking into consideration the surrounding light.
In dim lightning it recommand 90cd/m2!

I have settle for the first but even this sometimes seems a bit dark? What is your choice?
Click to expand...
Seems right. sRGB is a display referred system and the peak brightness is listed in the spec.
 
Lemaildetom said:
No technic really, just that if you think into the screen brightness i'm usually set a bit bellow the 50% mark s the screen can go way brighter!
Click to expand...
The brightness control affects the black level. Do you mean the contrast?
 
st599 said:
The brightness control affects the black level. Do you mean the contrast?
Click to expand...
The other way round... Monitor brightness affects the white point, a combination of brightness and contrast affects the black point, with many monitors these days we only have control over the brightness, the contrast is controlled within the calibration and profiling software.

@Lemaildetom, when deciding the best brightness for your monitor it needs a comparison somewhere, hence Stevens suggestion of matching to a sheet of white paper. There are a number of grey scale gradients around, you should be able to discern the tones both in the darks and the lights i.e from white to black.

Even though the display may appear too dark your eyes are wonderful things and they will soon compensate.
 
PhilH04 said:
The other way round... Monitor brightness affects the white point, a combination of brightness and contrast affects the black point, with many monitors these days we only have control over the brightness, the contrast is controlled within the calibration and profiling software..
Click to expand...

The correct use of the term Brightness Control is for the control of the black level of the monitor, Contrast controls the white level of the monitor.

See page 5:

Brightness - This control impacts the low end of grayscale (0 to 50 IRE)
Contrast - This control impacts the high end of grayscale (50 to 100 IRE)

http://www.spectracal.com/downloads/files/Website/CalMAN-practical-calibration-guide.pdf
 
st599 said:
The correct use of the term Brightness Control is for the control of the black level of the monitor, Contrast controls the white level of the monitor.

See page 5:

Brightness - This control impacts the low end of grayscale (0 to 50 IRE)
Contrast - This control impacts the high end of grayscale (50 to 100 IRE)

http://www.spectracal.com/downloads/files/Website/CalMAN-practical-calibration-guide.pdf
Click to expand...
Apologies.. yes, however for the most part all we can physically adjust on the monitor is the brightness, to match paper white brightness is used and the contrast is down to the software, that is where, in my haste I worded it wrong...

Spectracal is more highly specialised than most here would need and is often used in broadcast situations, hence the reference of 0 to 50 and 50 to 100 IRE, a measure not used by photographers.
 
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