DJ, of course you're right, the contrast increases, the curve gets concave. I had to grasp it immediately, my thanks to Ryuji.(posted 8063 days ago)One more way to introduce the shoulder: bleach the overdeveloped (and fixed) in a superproportional reducer. "Super" means that it affects highlights much more than shadows. Since shadows will probably be also somewhat affected, some loss of film speed seems to be unavoidable, but, unlike the pre-development bleaching, this process is under full visual control, thus no more the Black Art, only the White One.
Ted, if you have the famous N-6 image online, could you please thell the address? Just curious...
Thanks and best regards