In article , Ken Hart
wrote:

Does ISO 200 on a digital camera broadly match the grain/noise of ISO 200
Fujicolor or Kodacolor that I used to use years ago?

Close enough.

I'm going to have to respectfully disagree with SD here, but just on his
two word paragraph.

The "grain" of a digital sensor would be relative to the pixel count of
that sensor. To go to the extreme, a 3K-pixel toy camera would have a
"grainy" image no matter how low you dial the ISO- assuming that such a
camera would have that feature! OTOH, a 48M-pixel medium format digital
back would have a very tight "grain" pattern, exceeding that of 35mm ISO
200 film.

false.

you're confusing 'grain', or digital noise, with resolution.

a 3 kp camera has a lower *resolution* than a 48 mp camera.

noise depends on the pixel size, or how much light is collected. larger
pixels have less noise.

sd is correct in that iso 200 on a digital camera is equivalent to iso
200 on a film camera with regards to exposure. it won't necessarily be
*exactly* the same, but as he said 'close enough'.

however, sd is not correct in that the grain/noise will be close.

for digital, the noise will be *significantly* less than film grain at
the same iso. it's nowhere near close.

nikon d850 at iso 3200 & 25600:
https://i.ytimg.com/vi/5k92LnEGOKo/maxresdefault.jpg

nikon d810/d850/d500 at iso 12800:
https://i.ytimg.com/vi/y_kk7QhS-MU/maxresdefault.jpg

being able to shoot at iso 3200-6400 and beyond without worrying about
noise opens up a whole new world not possible with film.