REDO – Part 2A "IDENTICAL BRIGHTNESS"

As I adjusted the ISO setting, the SS settings had to be adjusted. As my ISO setting increased, my shutter speed decreased to capture identical brightness in all the three images. As I further increased the IS0, around 1200+, it became more difficult to adjust the SS to match same overall brightness.

 ISO 32, S1/19

 ISO 160, S 1/79

 ISO 1250, S 1/501