Stress does not cause any measurable modifications in vowel quality.

There is little or no change in the actual vowel quality of the neutral vowels.

Latin has five vowel qualities, which may occur long or short.

Stress does not cause any measurable modifications in vowel quality (very much unlike English).

There are eight vowel qualities, each of which may occur long or short.

There are seven vowel qualities, which occur long and short:

Iaai has ten vowel qualities, all of which may occur long and short.

Unlike in English, stress does not affect vowel quality or height.

The other long vowels do not have variants with differing vowel quality.

Various more specific conditioned shifts of vowel quality have also occurred.