Originally Posted by D-Nice
Please detail your id3 setup (i.e. on screen or off screen). This is sounding more and more like a meter issue, specifically id3 repeatability capabilities.
Meter is off the screen attached to the boom microphone stand about 20cm from the screen. I know the FOV of the iD3 is around 13cm but when validating my profile I got better results with the meter slightly further away from the screen.
Originally Posted by RTracey
OK, here are my observations after some additional testing. I reset everything on the TV, confirmed that the contrast was set at max before the autocal ran and adjusted the delay to 1 as D-Nice suggested. I'm seeing the same behaviour as Adam, although my dEs are not quite as good.
So, I'm still seeing the dip at 82-92 IRE. Stopping the autocal before the rolling calibration adjustment starts (when I have an apparently ideal response), yields garbage when the grayscale is read again.
If this is a meter issue, it's fundamental to the meter design itself and not to one individual meter - Adam and I are using variants of the same meter and see essentially the same thing. My money is on a software bug with this meter.
And still no response from Spectracal...
Thanks for posting all your results, so glad I am not the only one getting these results as I think if I were I would be going slightly mad
I presume you are not creating you own meter profile with a spectro?
Also which picture mode are you using? Custom or Pro Cinema?
Finally is your meter on or off the screen? I have found out that OLED is a lot like plasma & heats up to such a degree that this can effect the meter so non-contact measurements are the best way to go.
The only downside to this is that if you cant control the ambient light in you room this may effect your results. I believe there is a feature in CalMAN to compensate for this but I have never used it as I can control all the ambient light in my room.
I am getting better results with Custom for some reason. It's like there is additional processing going on in the background on Pro Cinema even with all the processing turned off in the menus.
I have had two replies from Spectral, the one I have already posted & the other I asked about why after Autocal has finished if you do a read series you get different results, there was the response:
"That is most likely happening because, at the immediate end of the AutoCal process, the greyscale chart may not always reflect the final adjustments. That is why the Post-Calibration screen has you re-read the greyscale to get an idea of the final results.
There may also be a bit of error exaggeration, which happens near black and white when using a Gamma Log/Log chart.
At any rate, the dE numbers you are getting are well under what could be identified by a human eye."
So from what I am reading they say there is no problem because my readings are under 1 dE average & are not perceivable to the human eye. Not the response I was looking for.
I also think this is a meter issue but I cannot see what else we can do to resolve it?