Color negative papers such as Endura or CA must be shot with a heavy red filtration and assuming an ISO value of around 25 after filtration. The estimated process is: 1st developer (D-19 1:2 or 1:3) 2', stop 30", wash 30", re-expose, CD 2' (RA-RT color developer or equivalent), wash 30", Blix 2', wash 2' or longer and all at 68 deg F (20 deg C).