ehhh.... boh lah...neopan is more grainy than tri-x.
the higher the iso film, the more the grain.
so for example, tri-x at iso 200 and plus-x pushed to 200. which has more grain ?
answer is tri-x pulled to 200. why ? the reason is that the film is more grainy than plus-x.
to confuse everyone further, less light = grain. saturated light = grain. wrong developer = grain.
for developer effect:
http://retro.ms11.net/film.jpg
sometimes, a grainy film like neopan + d76 = very sharp grains.
or less sharp = less grain, eg. microdol-x developer, see
http://retro.ms11.net/lisaswing.jpg
an example, see
http://retro2.ms11.net/self.jpg
less light = grain, example is pushing, concept of pushing is to reduce light but compensate in development.
saturated light, see this example,
http://retro2.ms11.net/oversat.jpg the negative was a dense black, ie. image was white,
to salvage it i had to adjust the curves to see anything, the result is very grainy.
raytoei