Nano Banana 2 Lite vs Image 2.5：移轴微缩硬对照

Prompt

INTENT     selective attention made geometric; miniaturisation, or a slice of focus cutting across the world
UNKNOWNS   tilt angle ;  hinge distance J = f / sin(tilt) ;  aperture N ;  focus distance
LAWS
  Scheimpflug   subject plane, lens plane and image plane extended meet in ONE common line
                ⇒ tilting the lens TILTS the plane of sharp focus in the world
  hinge rule    the focal plane pivots about a hinge line parallel to the lens plane at J below it
                ⇒ the in-focus volume is a WEDGE: zero thickness at the hinge, widening with distance.
                  Near sharp band NARROW, far sharp band WIDE — a lawful, monotone flare.
  the inversion  sharpness is governed by distance FROM THE TILTED PLANE, not by depth.
                ⇒ objects at very different camera distances can be equally sharp if they lie on the plane
                ⇒ objects at the SAME camera distance can differ in sharpness if one sits off it
                (⇒ the "equal depth ⇒ equal blur" FORBIDDEN of the thin-lens prompt is here REVERSED —
                  which is exactly why fake tilt-shift is detectable)
  vertical objects  a lamppost, tower or figure standing across the plane is sharp only in the BAND where
                it intersects, blurring above and below — but that band's HEIGHT varies with its distance
  shift         rise/fall keeps sensor parallel to the façade ⇒ verticals stay PARALLEL while framing high;
                the horizon sits off-centre. Cropping a tilted-up frame instead leaves converging verticals.
  aperture      stopping down widens the wedge; the bokeh still obeys one aperture, one blade count
OVERDETERMINATION   the plane recovered from ≥3 sharp features at differing depths — one plane fits all;
                    the wedge's widening rate must agree with the recovered tilt and N
HONEST      one tilted plane; sharpness monotone in distance from it; the sharp band widens with depth
FORBIDDEN   a blur gradient that is a function of IMAGE HEIGHT rather than of distance from a world plane
            (the post-filter tell: an even soft band top and bottom, ignoring the scene's geometry) ;
            a sharp band of constant width from foreground to horizon (no wedge) ;
            two objects on the same recovered plane, one sharp and one soft ;
            a tall vertical uniformly sharp along its whole height while the plane clearly crosses it ;
            "shifted" architecture with converging verticals, or unshifted verticals with a centred horizon
            that the framing contradicts ;
            miniature-faking by blur and saturation alone with a ground-level viewpoint no model would have.

Attribution

Author

Gdgtify

Published

2026-09-16

Original post

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Collected from

xianyu110/awesome-gpt-image2.5 · 2100356053095641424 · MIT