Hacked the DX-Code to 50 ISO

I changed the Redscale's 100 ISO DX-Code into 50 ISO by scratching off the black paint and adding an electric tape over an exposed "metallic square" (sorry I don't know what to call it.) I think the Yashica T4 did read the film as 50 ISO since the photos had a bit of blues and greens. :) If only I had control over the shutter speed, no?