[pdftex] size of glyphs in postscript fonts

[Christoph Dreyer]

Hi!

When I switch from Computer Modern to another font, like Times, the size
of the glyphs changes too. This means that although I want the text to
be typeset at 11pt, the result looks like it was typeset at 12pt: The
linebreaks are at different positions and there are fewer words on a
line.

Is this the correct behaviour? Shouldn't fonts at the same size give, at
least approximately, the same output?

Is it possible to scale the fonts to their correct size? I've seen that
the tfm-file has a parameter design-size. Is this the right place for
manipulation?

And what is the correct size for a font? The pfm-files have fields
called points and pointsize. But these are always set to 10 and 240
respectively. Or should I use an em for scaling?

When using one postscript font, the leading was too small. Does this
have anything to do with the pointsize?

Thanks for your answers. I know, it's a little bit offtopic.

Christoph