or Connect
AVS › AVS Forum › Display Devices › Display Calibration › Which meter should i trust on grayscale low end?
New Posts  All Forums:Forum Nav:

Which meter should i trust on grayscale low end?

post #1 of 4
Thread Starter 
So, I have an i1 pro and i1 display pro.

I profiled the colorimeter using my spectrophotometer aiming the same point on a warmed up white led tv.

Then made some readings throughout grayscale.

Results from profiled display pro:

the readings were stable throughout grayscale


1st run of i1 pro:


2nd run of i1 pro (a reinitialization was performed betweend runs)

notice: the readings were unstable on the low end


As shown both meters give similar readings at higher luminance levels (30% and higher). i1 pro gives repeatable readings with luminance level over 15%.

BUT, it starts varying much from the display pro somewhere around 30% level.

The question is which meter too trust in that case and why?

I know that many pro - calibrators are using i1 pro + k-10, do the readings with profiled k-10 vary that much too on the grayscale low end?
post #2 of 4
Quote:
Originally Posted by Koperfild View Post

So, I have an i1 pro and i1 display pro.

I profiled the colorimeter using my spectrophotometer aiming the same point on a warmed up white led tv.

Then made some readings throughout grayscale.

Results from profiled display pro:

the readings were stable throughout grayscale


1st run of i1 pro:


2nd run of i1 pro (a reinitialization was performed betweend runs)

notice: the readings were unstable on the low end


As shown both meters give similar readings at higher luminance levels (30% and higher). i1 pro gives repeatable readings with luminance level over 15%.

BUT, it starts varying much from the display pro somewhere around 30% level.

The question is which meter too trust in that case and why?

I know that many pro - calibrators are using i1 pro + k-10, do the readings with profiled k-10 vary that much too on the grayscale low end?

Assuming the profiling is working properly, you should be able to trust the i1 Display Pro (D3) for the whole grayscale. Since both meters give similar readings at 30% and up this means the profiling is working correctly and you should trust the D3 down low because it has excellent low light sensitivity, which isn't a strength of the i1Pro spectro.
post #3 of 4
Thread Starter 
Thanks Plazma I know you're an experienced man but i would like to hear more opinion from others.

It's a mystery for me, why nobody talks about such a big deviations.
post #4 of 4
Quote:
Originally Posted by Koperfild View Post

Thanks Plazma I know you're an experienced man but i would like to hear more opinion from others.

It's a mystery for me, why nobody talks about such a big deviations.

I have the same setup. You might want to run the profile again. I've had similar differences, but corrected them by re-profiling the meter. Also, I would use the i1display profiled for grayscale. It's much faster, and way better at low light.

*(edit)
Sorry I couldn't see the charts, I was on my phone. If the profile is giving good results, then you should be fine. My i1pro also gets wonky around 30% down.....and takes forever.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Display Calibration
AVS › AVS Forum › Display Devices › Display Calibration › Which meter should i trust on grayscale low end?