![]() Block’s (1996) suggestion that most people are around 4 feet away when they read a poster seems pretty reasonable to me, and so this produces a letter height of 0.34 inches needed to correspond to a 0.007 subtended angle. This advice can readily translate to font sizes in poster presentations, since there is a limited range in which people will attempt to read them. At my usual sitting distance I can read fonts down to 7 points, but I would prefer not to under usual circumstances. A subtended angle of 0.007 produces a font size of just over 11 points at that distance. ![]() Most everyone with corrective vision can clearly see under 0.007, but we shouldn’t be making our readers strain to read the text.įor comparison, I sit approximately 22 inches away from my computer screen. Personal experimentation for me is that 0.007 is a good size, although up to 0.010 is not uncomfortably large. ![]() My research into other recommendations (eye tests, highway symbols) tends to be smaller, and between mine and Smith’s other sources tends to produce a range of 0.003 to 0.010 radians. ![]() From this Smith gives the recommendation as 0.007 radians as a good bet for pretty much everyone to be able to read the text. ![]()
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