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Apple Computing Products:
macOS - Desktop Hardware
iMac 20" display - Do problems still persist?
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<blockquote data-quote="petenick" data-source="post: 715518" data-attributes="member: 17459"><p>Hi, the 20 inch iMac still uses a TN or twisted nematic display that can only show 262,000 colors. The other "millions" are shown thru dithering. That swayed me from a newer aluminum 20" iMac. The older 20" white ones used a non-TN display. However, I ordered an aluminum 24" iMac for photography work , they have an excellent (S-IPS?) display with much better viewing angles and can truly show millions of colors. When mine came I was devastated. The display is blindingly bright and for color calibration the brightness needs to be turned down almost all the way, where you can see problems begin. The display was much brighter on the left side than the right, and it had unacceptable "backlight bleed" which is where the sides and corners of the displays let light in. After searching on this problem, it seems mostly iMacs made in China (like mine was) have this problem. I went to an Apple store near me and all 5 iMacs I had them open and try for me had this color gradient and backlight bleed. The older white iMacs that are still Intel don't have this issue, and I'm sure lots of people don't have this problem, but the six total 24" iMacs I laid eyes on did. I promptly called and returned mine. If color accuracy and uniform display color is important to what you do, make sure the display is alright before buying. Currently I am looking for a white Intel iMac, as they seem to have no display issues whatsoever.</p></blockquote><p></p>
[QUOTE="petenick, post: 715518, member: 17459"] Hi, the 20 inch iMac still uses a TN or twisted nematic display that can only show 262,000 colors. The other "millions" are shown thru dithering. That swayed me from a newer aluminum 20" iMac. The older 20" white ones used a non-TN display. However, I ordered an aluminum 24" iMac for photography work , they have an excellent (S-IPS?) display with much better viewing angles and can truly show millions of colors. When mine came I was devastated. The display is blindingly bright and for color calibration the brightness needs to be turned down almost all the way, where you can see problems begin. The display was much brighter on the left side than the right, and it had unacceptable "backlight bleed" which is where the sides and corners of the displays let light in. After searching on this problem, it seems mostly iMacs made in China (like mine was) have this problem. I went to an Apple store near me and all 5 iMacs I had them open and try for me had this color gradient and backlight bleed. The older white iMacs that are still Intel don't have this issue, and I'm sure lots of people don't have this problem, but the six total 24" iMacs I laid eyes on did. I promptly called and returned mine. If color accuracy and uniform display color is important to what you do, make sure the display is alright before buying. Currently I am looking for a white Intel iMac, as they seem to have no display issues whatsoever. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
iMac 20" display - Do problems still persist?
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