I bought my 21 year old son a 4x5 monorail, lens/lensboard, tripod, film holders, and 50 sheets of Tri-X. He has access to my library of photography related books including several dedicated to large format photography. He even read a couple of them.
His first day of shooting, he invited me along. I watched as he made these torturous and entirely unnecessary camera movements where his subject required almost no movements. I'd look at his ground glass and bite my toungue rather than point out that if he just backed off on the rear swing, moderated the front rise... etc, he'd have a tack sharp image.
Yes, he recognizes that the images he made are "twisted". He likes that. Imagine a cone shaped building whose image on a 4x5 negative is mostly out of focus except for a narrow horizontal band in the middle that is tack sharp. I've held my opinion in, knowing he is exploring his own vision.
At what point should I step in and gently direct him to the "right" way to use a LF camera?