I'm on a learning curve that has suddenly steepened. A few weeks ago a 24mm PC-e lens arrived along with a determination to achieve control over it. This morning was another instalment, beginning at 4.30 (which is frankly getting ridiculous...) and concluding with more thoughts about selling it.I think I understand the principle. Frame the image, focus on a point about 1/3 of the way up the frame then apply a tiny amount of tilt forward to bring everything into focus. I know everyone applies too much and am careful of that. I use live view and magnification to check the focus. I have a Lupe to allow me to magnify the live view screen. I feel I'm doing it all right but still failing to make a substantial or indeed any significant improvement over using my 16-35mm well stopped down and carefully focussed. I'm going to edit and add to this post as blog within a blog. I'd be really keen to hear others people's views and experience. If you have one or have ever had a PC /T&S lens, do contribute.Update 6/5/17 The Pc-e lens has gone. I am in the fortunate position of being able to do what I enjoy. I wasn't enjoying this lens and it wasn't adding to what I could achieve. Even allowing for the need to learn and practise I was hating the fuss necessary to make a photograph. I don't mind slowing down and taking time but this lens sucked out my desire to live. I don't know whether I expected too much or if I simply failed to make the lens perform to its full or even if the lens was faulty. It would have required an even greater financial investment to investigate and my patience was done.Lit is being replaced by a Zeiss 25mm f2 that comes with a colossal reputation. This will no doubt become the subject of further ramblings in this blog.