Sculpt – Museum

Twelve works in a white hall with three black chambers

VisualisationMuseumFree spatial study

Visualisation of a fictional space – not a realised project.

A white hall of 60 × 44 metres, ten metres high, beneath bands of skylights. Six sculptures appear twice: on a black ground as Sculpt Color, on a white ground as Sculpt Dark Color. Twelve works on fourteen projectors – an exhibition of juxtapositions, black against white, closed chamber against open wall.

The tour begins on the central axis. Behind the entrance stands a black monolith, nine metres wide and just over six metres high, with “Würfelringe” on a black ground; its reverse side shows the same sculpture on a white ground. The end wall carries “Kreisel” at a width of 14 metres, white on white, as if the sculpture stood free in front of the wall; to the left and right it is flanked by two portrait-format versions of “Perlenturm”, one black, one white. Along the west side, three closed black chambers line up with “Ringkern”, “Kugelringe” and “Kugelschläuche” on a black ground; directly opposite, across the central nave, three open white bays show the same works on a white ground. On the way back, “Kreisel” runs in its black version on the entrance wall.

In the chambers, the image is the only source of light; in the hall, the white ground merges with the wall, and the sculpture seems to step out of the plaster. The tour thus alternates constantly between dark and light, between concentration and expanse. Around a hundred and ten visitors spread out in the central nave, in front of the walls, in the chambers and on the benches.

Technical details

What it takes to build this space: dimensions, equipment, brightness.

Three Panasonic PT-MZ882 projectors with ET-ELW22 lenses (short-throw zoom), 8,200 lumens each, hang from cross trusses. Each partial image measures 7.60 × 4.28 m with its bottom edge at 1.20 m; the throw distance is 6.16 m (throw ratio 0.81:1, lens shift -45% vertical). Calculated luminance on the wall: approx. 80 cd/m². One Panasonic PT-RQ35K2 projector with ET-D3LEW200 / ET-D3LEW201 lens (short-throw zoom), 30,500 lumens, hangs from the ceiling. The image measures 14.00 × 7.88 m with its bottom edge at 1.10 m; the throw distance is 11.60 m (throw ratio 0.83:1, lens shift -58% vertical). Calculated luminance on the wall: approx. 88 cd/m². Two Panasonic PT-MZ882 projectors with ET-ELW22 lenses (short-throw zoom), 8,200 lumens each, hang from cross trusses. Each partial image measures 4.40 × 2.48 m with its bottom edge at 3.08 m; the throw distance is 3.44 m (throw ratio 0.78:1, lens shift -45% vertical). Calculated luminance on the wall: approx. 240 cd/m². Two Panasonic PT-MZ882 projectors with ET-ELW22 lenses (short-throw zoom), 8,200 lumens each, stand on floor stands. Each partial image measures 4.40 × 2.48 m with its bottom edge at 0.60 m; the throw distance is 4.19 m (throw ratio 0.95:1, lens shift 52% vertical). Calculated luminance on the wall: approx. 240 cd/m². One Barco G62-W9 projector with R9801840 G lens 0.75-0.95:1 (short throw), 9,500 lumens, hangs from a cross truss. The image measures 8.00 × 4.50 m with its bottom edge at 1.10 m; the throw distance is 6.50 m (throw ratio 0.81:1, lens shift -45% vertical). Calculated luminance on the wall: approx. 84 cd/m². Three Panasonic PT-MZ882 projectors with ET-ELW22 lenses (short-throw zoom), 8,200 lumens each, hang from the ceiling. Each partial image measures 7.60 × 4.28 m with its bottom edge at 0.90 m; the throw distance is 6.16 m (throw ratio 0.81:1, lens shift -45% vertical). Calculated luminance on the wall: approx. 80 cd/m². Two Panasonic PT-MZ882 projectors with ET-ELW22 lenses (short-throw zoom), 8,200 lumens each, hang from cross trusses. Each partial image measures 7.00 × 3.94 m with its bottom edge at 1.10 m; the throw distance is 5.65 m (throw ratio 0.81:1, lens shift -45% vertical). Calculated luminance on the wall: approx. 95 cd/m². Alternatives, price range and all dimensions per device are listed in the equipment list; floor plan, section and axonometric view show the projection cones.

Room

The room of the scenario and how the images are placed in it.

Room: white exhibition hall with bands of skylights, three black chambers, open bays, free-standing monolith and foyer
Configuration: tour in pairs – each sculpture on a black and on a white ground: chamber opposite bay, front and back of the monolith, large on the end wall, two portrait formats, entrance wall
Visitors (approx.): 110

Room	Width	Depth	Height
Hall	60 m	44 m	10 m
Foyer	16 m	7 m	4.5 m
Chamber 1	12 m	9.5 m	5.6 m
Chamber 2	12 m	9.5 m	5.6 m
Chamber 3	12 m	9.5 m	5.6 m

Projection

How the images are created: equipment, image size, distance and mounting.

3 × Projector

7.6 m × 4.28 m per image

Bottom edge: 1.2 m
Distance: 6.16 m
Throw ratio: 0.81 : 1
Lens shift: -45 % vertical
Mounting: on the truss

1 × Projector

14 m × 7.88 m per image

Bottom edge: 1.1 m
Distance: 11.6 m
Throw ratio: 0.83 : 1
Lens shift: -58 % vertical
Mounting: on the ceiling

2 × Projector

4.4 m × 2.48 m per image

Bottom edge: 3.08 m
Distance: 3.44 m
Throw ratio: 0.78 : 1
Lens shift: -45 % vertical
Mounting: on the truss

2 × Projector

4.4 m × 2.48 m per image

Bottom edge: 0.6 m
Distance: 4.19 m
Throw ratio: 0.95 : 1
Lens shift: 52 % vertical
Mounting: on a stand

1 × Projector

8 m × 4.5 m per image

Bottom edge: 1.1 m
Distance: 6.5 m
Throw ratio: 0.81 : 1
Lens shift: -45 % vertical
Mounting: on the truss

3 × Projector

7.6 m × 4.28 m per image

Bottom edge: 0.9 m
Distance: 6.16 m
Throw ratio: 0.81 : 1
Lens shift: -45 % vertical
Mounting: on the ceiling

2 × Projector

7 m × 3.94 m per image

Bottom edge: 1.1 m
Distance: 5.65 m
Throw ratio: 0.81 : 1
Lens shift: -45 % vertical
Mounting: on the truss

All partial images belong to one picture – one computer outputs them simultaneously and frame-accurately.

Real time and interaction

The film shows a recording. In the installation the work is computed live – and can respond to the space and its visitors.

Computation: live, in real time, on a high-end computer with a powerful 3D graphics card, NVIDIA RTX 4070 or higher; with many image surfaces also with several graphics cards
Output: all projectors in a room from one computer, as coordinated zones rather than separate videos
Interaction: 3D LiDAR scanners capture people and movement in the space; the work can respond to them
Fitting: mapping to the actual architecture – edges, columns, ceilings and floors

Brightness

Whether the image will be bright enough: luminance achieved against the target value. The line in the bar marks the target value.

3 × Panasonic PT-MZ882bright enough

Luminance: 80 cd/m²
Target value: 60 cd/m²
required luminous flux: 7,961 lm
Luminous flux: 8,200 lm

1 × Panasonic PT-RQ35K2bright enough

Luminance: 88 cd/m²
Target value: 60 cd/m²
required luminous flux: 27,016 lm
Luminous flux: 30,500 lm

2 × Panasonic PT-MZ882bright enough

Luminance: 240 cd/m²
Target value: 60 cd/m²
required luminous flux: 2,669 lm
Luminous flux: 8,200 lm

2 × Panasonic PT-MZ882bright enough

Luminance: 240 cd/m²
Target value: 60 cd/m²
required luminous flux: 2,669 lm
Luminous flux: 8,200 lm

1 × Barco G62-W9bright enough

Luminance: 84 cd/m²
Target value: 60 cd/m²
required luminous flux: 8,822 lm
Luminous flux: 9,500 lm

3 × Panasonic PT-MZ882bright enough

Luminance: 80 cd/m²
Target value: 60 cd/m²
required luminous flux: 7,961 lm
Luminous flux: 8,200 lm

2 × Panasonic PT-MZ882bright enough

Luminance: 95 cd/m²
Target value: 60 cd/m²
required luminous flux: 6,754 lm
Luminous flux: 8,200 lm

Equipment

The reference devices used for the calculations. Devices of the same class are equally suitable.

Panasonic PT-MZ882

Lens: ET-ELW22 (Short-Throw-Zoom)
Luminous flux: 8,200 lm
Weight: 18.6 kg

Alternatives (3)

Model	Lens	Luminous flux	Luminance
Barco G62-W9	R9801840 G lens 0.75-0.95:1 (Short Throw)	9,500 lm	93 cd/m²
Panasonic PT-REZ15	ET-C1W400 (Weitwinkel-Zoom)	15,000 lm	147 cd/m²
Panasonic PT-RQ35K2	ET-D3LEW200 / ET-D3LEW201 (Kurzdistanz-Zoom)	30,500 lm	299 cd/m²

Panasonic PT-RQ35K2

Lens: ET-D3LEW200 / ET-D3LEW201 (Kurzdistanz-Zoom)
Luminous flux: 30,500 lm
Weight: 69.8 kg

Alternatives (3)

Model	Lens	Luminous flux	Luminance
Panasonic PT-RQ35K2	ET-D3LEW300 (Weitwinkel-Zoom)	30,500 lm	88 cd/m²
Barco UDX-4K40 FLEX	R9862001 TLD+ 90 Grad ST (0.65-0.85), am UDX-4K 0,72-0,94	40,000 lm	115 cd/m²
Barco QDX-4K45	R9862001 TLD+ 90 Grad ST (0.65-0.85), am QDX-4K 0,67-0,88	45,000 lm	130 cd/m²

Barco G62-W9

Lens: R9801840 G lens 0.75-0.95:1 (Short Throw)
Luminous flux: 9,500 lm
Weight: 17.4 kg

Alternatives (3)

Model	Lens	Luminous flux	Luminance
Panasonic PT-REZ15	ET-C1W400 (Weitwinkel-Zoom)	15,000 lm	133 cd/m²
Panasonic PT-RQ35K2	ET-D3LEW200 / ET-D3LEW201 (Kurzdistanz-Zoom)	30,500 lm	270 cd/m²
Barco UDX-4K40 FLEX	R9862001 TLD+ 90 Grad ST (0.65-0.85), am UDX-4K 0,72-0,94	40,000 lm	354 cd/m²

Price range and equipment list on request.

Drawings

Axonometric view, floor plan and section show the space and the projection cones.

Sculpt – Museum — Axonometric view — **Axonometric view** · not to scale

Sculpt – Museum — Floor plan — **Floor plan**

Sculpt – Museum — Section — **Section** · not to scale

Glossary

Real time: The image is recomputed at every moment, about 60 times per second, instead of being played back as a finished video.
3D LiDAR scanner: Scans the space with laser light and captures people and movement in three dimensions – the basis of the interaction.
High-end computer: A computer with a powerful 3D graphics card – NVIDIA RTX 4070 or higher – that computes the image live and drives all projectors at once.
Mapping: Fits the projection to the actual geometry of the space so that image and architecture meet exactly.
Throw ratio: Distance divided by image width. At 0.8 : 1, the projector for an image 6 m wide stands 4.8 m away.
Lens shift: Shifts the image within the lens without tilting the projector – so it stays rectangular.
Luminous flux: How much light the projector emits, in lumens.
Luminance: How bright the image surface appears to the eye, in candelas per square metre. In a dark room, about 60 is enough.
Bottom edge: The height of the bottom edge of the image above the floor.
Synchronised output: Several projectors show parts of the same image; one computer outputs them simultaneously – computed live or as video.