First retina iMac

[ignatius345]

There might be difference in panels, but from the previous linked Wikipedia article
"Image persistence can be reversed by allowing the liquid crystals to relax and return to their relaxed state, such as by turning off the monitor for a sufficiently long period of time (at least a few hours)."

I don't know or care what this Wikipedia article says, but I can tell you from firsthand experience that until I got the panel replaced, my 2014 iMac became awful to use and the problem got worse over time.

Was it better for a little while when it first started up in the morning? Don't remember, but it doesn't really matter since the issue came back every single day until it was fixed.

 

[Significant1]

I don't know or care what this Wikipedia article says, but I can tell you from firsthand experience that until I got the panel replaced, my 2014 iMac became awful to use and the problem got worse over time.

Was it better for a little while when it first started up in the morning? Don't remember, but it doesn't really matter since the issue came back every single day until it was fixed.

You got a poor/faulty panel and got it replaced. Problem solved.

But inherently, LCD does not suffer permanent image retention damage like CRT and OLED does.

If it did, I think my almost 15-year-old late 2009 27" iMac Panel would by now have some kind of symptoms.

 

[wilberforce]

You got a poor/faulty panel and got it replaced. Problem solved.

But inherently, LCD does not suffer permanent image retention damage like CRT and OLED does.

If it did, I think my almost 15-year-old late 2009 27" iMac Panel would by now have some kind of symptoms.

Although image retention/persistence is technically only temporary (unlike burn-in which is permanent), in the case of my 2014 iMac the effect in actual use was pretty much the same: long lasting ghosting of menu bars and other similar elements, which manifests after maybe 10 minutes of use. I agree with the statement "awful to use and the problem got worse over time." However, apparently it does not bother some people.
I still think it is good to know that it has this potential issue before buying.

 

[pshufd]

Although image retention/persistence is technically only temporary (unlike burn-in which is permanent), in the case of my 2014 iMac the effect in actual use was pretty much the same: long lasting ghosting of menu bars and other similar elements, which manifests after maybe 10 minutes of use. I agree with the statement "awful to use and the problem got worse over time." However, apparently it does not bother some people.
I still think it is good to know that it has this potential issue before buying.

It doesn't bother me at all, because me screen is mostly static. The pink tinging on the 2015 doesn't bother me either.

I can imagine a lot of use cases where it would make work difficult though.

I always indicate stuff like this when I go to sell them. I still prefer the iMac panels to my Dell Ultrasharp 4k panels.

 

[ignatius345]

You got a poor/faulty panel and got it replaced. Problem solved.

But inherently, LCD does not suffer permanent image retention damage like CRT and OLED does.

If it did, I think my almost 15-year-old late 2009 27" iMac Panel would by now have some kind of symptoms.

Uhh yeah. Nowhere did I say that was not the case. I got a bad panel and got it replaced, as I said. Then you pasted in all this stuff about image retention "fixing itself" which was clearly not applicable.

 

[Significant1]

Uhh yeah. Nowhere did I say that was not the case. I got a bad panel and got it replaced, as I said. Then you pasted in all this stuff about image retention "fixing itself" which was clearly not applicable.

Well it is, but there are panel variations