Quote from: gt40 on June 08, 2017, 11:55:15
Lenove must be joking. A 3000 euro machine with a PWM issues.
Hello,
from my researches, I found out someone talking about this and telling that there seems to be PWM on all OLED screens on computer or mobile phones for a reason of helping solving an OLED weakness. Sorry that I don't remember which one right now without search it back. Not sure about TVs. This information is probably right but I cannot tell for 100% sure. Too few reviews about other models with OLED tells about PWM, informations are few even on forums.
We will see if next year model gets a new oled screen without PWM.
I have the 1st gen X1 Yoga with OLED and the PWM seems to have no impact on me. No headache at all and for getting faster tired eyes, really hard to tell as for now I felt nothing particular but maybe there is some light impact.
I am very surprised of the differences between last year model and this year one (Adobe RGB 15% loss, how can it be ? would need to test several oled screens of the 2 generations to check and compare).
I have seen screen from 260 to 360cd/m² in reviews for last year model. Here is even poorer at 240. Mine is 300cd/m², why almost only mine seems to have the exact amount of Lenovo claim ?
It is possible to calibrate the screen with some free programs and right calibrator("DisplayCAL" with "Argyll CMS" programs and for example Colormunki i1 display pro...beware to have version 3 for OLED). My calibration has worked very well and surprising, my screen delta for colours was very good even before calibration at 1,5. I could tell with my own eyes but calibrator did confirm it.
Of course calibration improves everything, better to calibrate at 100% brightness. At 0 or 25% brightness, there seems to be a problem in the checking accuracy with "marroon, burgundy" colour. It has a 13 delta. It's leading toward black, that's the reason of such high result. Red is also at 7 with 0% brightness but acceptable at 25%. All other colours perfect at 0,5 global delta.
Almost perfect spot on everything after calibration, just light unacuracies.