Below are sample crops from an indoor photograph of a book-cover at each of the Fuji Finepix F100's ISO settings. When available, a crop from the Fuji Finepix F50SE at the same ISO setting is shown next to the Fuji F100fd's crop. Images below are all unmodified 100% crops from their respective cameras taken at the highest quality setting. ISO and white-balance were set on camera, everything else was left on automatic.

These crops help determine which ISO settings can be acceptably used on these cameras. As noise increases, most cameras compensate with noise reduction which introduces softness. The result is that, while you can partly reduce noise at the expense of details, the maximum acceptable print size gets smaller as ISO is increased. The point at which a print become unacceptably noisy is a matter of personal taste.

Fuji Finepix F100fd

Fuji Finepix F50SE