Quick Question

[philippians1v21]

If I use 400 ISO film and change the ISO setting on my camera does that effect the film speed?

 

[Alpha]

Yes and no. The box speed is 400 no matter what.

You have four options:
1) Shoot it at box speed. Develop for box speed.
2) Shoot it at a lower speed. Develop for lower speed. This is called pull processing and generally reduces contrast.
3) Shoot it at a higher speed. Develop for higher speed. This is called push processing and generally increases contrast.
4) Shoot it at whatever speed. Develop for box speed. The outcome of this depends on how much latitude the film has in development.

 

[philippians1v21]

Thanks for your answers. Good to know this in the future as I work on my photos.