The font size to the rendered size correlation?

Can someone point me to an explanation of the size of the font to render actual size.  I did tests to try to figure out a correlation between what is assigned as a police and the real measure of the result size.  For example, if I enter a font size of 72 pt, I expect the 1 inch high character, but it is shorter.  I can't identify the parameter that is equal to 1 ".  Framework encompassing is higher, the characters are shorter and spacing is variable a is not equal to 1 inch when set to auto.  How could specify a font size if I want the upper case characters equal to 1 "?

This was discussed and explained many times in this forum. Do a search for 'square em' (including the quotation marks) in the Illustrator forum.

In short:

If I enter a font size of 72 pt, I expect the character 1 inch high

You wait until Barney WHO is 1 "?

M?

j?

p?

t?

O?

What happens if the police is, say, Bickham Script? You expect the cyclical capital B, with all its trappings, to measure 1 "vertically? Why the B and not the X or the Q? All these three characters are designed to be the right size proportionally to the other, but they do not measure the same height.

What is a font designer to do? He designs type on a space called the em square, using a relative unit called the em unit. The number of units in a square em em belongs the typographer, but it is commonly 800 or 1000 or 1200. Ask "What is the measure of a unit of the Ma?" is like asking "what is the measure of a pixel? It's a question meaningless, because a pixel (and an em unit) can be any action.

When you set type and specify its size, you specify the extent to which the program will scale the police square em.

a correlation between what is assigned as a police and the real extent size

To answer this question, ask you "what font and what real measure on which character? There is no such correlation uniform. It varies between fonts. It's a good and correct thing.

Some fonts are designed with all uppercase characters, the same height. If it were, characters seems out of proportion. Round characters (O, Q, C, G, J, S) are almost always larger than the non-round characters. In some designs of type, you can normally consider not round characters are, in fact rounded (A, R, B, P, M...). In other type designs, the treatment of the serifs increase the heights of characters above what you think as the height of the capitals. In the other fonts, sharp characters (A, M, N, V, W) are larger than non-pointu characters.

JET

Tags: Illustrator

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