The reader is strongly advised to read the lens evaluation notes.
See the DAP reviews of tilt/shift lense (search for “PC-E” on the index page).
The PC-E Micro Nikkor 45/2.8D ED offers a tilt function, which is one way to evade the effects of diffraction, by reducing the need to stop down when a cooperatively-shaped subject presents itself (e.g., one not plane parallel to the sensor but having its own semi-planar shape along which tilt can be aimed).
The shift function allows perspective correction, which is the other reason to consider a tilt/shift lens.
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Since 2006, Diglloyd Advanced Photography is the authoritative review and reference for DSLRs and their lenses: Canon and Nikon primarily, but also Pentax and some medium format. Reviews of key DSLRs are included, but the primary focus is on lens performance. Also included is a wealth of technique and workflow approaches.
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