ISO [CAMERA]

[Andrewyx]

Implement ISO/film emulation in the camera.

Acceptance Criteria:

• Increment/decrement vals with the controller
• Matches somewhat with realistic values
• Affects light exposure
• Adds graininess effect to photos

Gain is most likely a post-processing effect: below is the desire effect:

[doruphin]

Do this by changing film grain and white filter