What % zoom is actually full size view in a 27" iMac?

[MarieMeyer]

Can anyone tell me what % zoom would give me the appearance of "actual size" when using InDesign CC on a 27" iMac?

[Steve Werner]

It would depend on what screen resolution you have set on your display.

[MarieMeyer]

It is a 27" iMac "Retina", which I believe is 2560 by 1440 pixels

[Test Screen Name]

Best to just find it for your computer by experiment.

[Test Screen Name]

Is there a problem with doing it by experiment?

[MarieMeyer]

Yes, I am at somebody else's workstation for the weekend and I can't find a ruler, a sheet of copy paper, or anything else that I definitely know the dimensions of.

[rob day · Accepted solution]

what % zoom would give me the appearance of "actual size"

Starting with CS6 100% or View>Actual Size zoom displays the document at its physical print size. Prior to CS6 100% was a 1:1 image pixel to monitor pixel ratio (same as Photoshop).

If you want the pre CS6 behavior there is a hidden preference that can be changed via scripting. For the scripting discussion see #4 and #66 here

Re: InDesign CS6 resolution for pixel documents not the same