For architectural and commercial work, lens tilt solves a real problem: how do you hold sharpness across an entire facade, a long table, or an oblique surface without stopping down so far that diffraction kills your detail?
The answer is older than you think.

https://robertjbell.com/blog/the-tilt-shift-lens-a-working-photographer-s-guide-to-the-optics-that-actually-matter-5007868

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