I'm upgrading my tired 11 year old PC (still going strong though) and am contemplating getting a new 27" iMac (building my own PC with a good IPS monitor will cost about the same, but I kind of like the all in one of the iMac).
I've asked quite a few people this question but no answers, either they don't get the question or don't know how to answer (apple users right )
I know the retina mode basically doubles the pixels in each direction, but in normal Retina (Best) mode, you get 5120x2880 pixels operating with the space of the 2560x1440 iMac, so no increased real-estate.
But I THOUGHT somewhere I read that programs like Photoshop, Lightroom and some video apps will go to 1:1 pixel on a photo/video when opened so that you aren't pixel doubling on the image or video you are working on? That way you get more real estate for the image/video. Does this make sense?