In article , Whisky-dave
wrote:

To create an equal image. With not enough light, the
smaller sensor will have to amplify the signal more and this
creates more noise. It's just something that most people
don't think about.

Whisky-dave:
Those that started taking pictures using film know this

Sandman:
No, because if you shot with a 35 mm camera, all "sensors" were
the same size.

They didn;t have sensors, although some had inbuilt meters.

Whoosh

Sandman:
It wasn't an issue back then. It's only an issue now.

It's not an issue now, if anything it was more of an issue in the
past. That's why ISO came about.

Whoosh

Sandman:
ISO 400 was ISO 400 regardless of camera used.

Still the same today. ASA400 is ISO 400 which is 27 DIN.

Whoosh

--
Sandman