The word graph is pronounced ɡrɑːf by some speakers and ɡræf by others. This is also true when it is used as a suffix as in:
photograph spectrograph telegraph
However, the word graphic is always ˈɡræfɪk and graphical is always ˈɡræfɪkl. This is also the case when these are used as suffixes in words such as:
biographical demographic photographic
The word ending <-graphy> is pronounced ɡrəfi and imposes the main stress on the preceding syllable as in:
calligraphy = kəˈlɪɡrəfi
photography = fəˈtɒɡrəfi
telegraphy = təˈleɡrəfi
2013_07_15
Updated 2015_04_10