The JUST Normlicht DLS proofTop Multi 0B is a professional LED proofing light for colour-critical visual assessment in studios, prepress departments, print environments and production workflows. Designed as a desk device with the option to become a mobile proofing station when used with an optional trolley, it provides controlled lighting for evaluating proofs, print sheets, packaging samples, substrates, textiles, coatings, plastics and product components.
Standardised lighting is essential wherever colour must be judged reliably. A proof or material sample can look correct under office lighting and visibly different under daylight, retail light or production conditions. This creates uncertainty between designers, printers, suppliers, brand teams and quality-control departments. The DLS proofTop Multi 0B helps reduce this risk by creating defined, repeatable viewing conditions for professional colour assessment.
The device is designed for viewing print formats up to 2B, or approximately 50 × 70 cm. Its lighting area of approximately 70 × 50 cm provides a practical working surface for occasional colour proofing in a studio, agency, reprography department or print-related production environment. It throws glare- and shadow-reduced light onto both the work surface and the back wall, supporting more comfortable and consistent visual evaluation.
The system uses JUST Normlicht LED technology and is switchable between D50 and D65, each with and without UV component. D50 is the key standard illuminant for graphic arts, print proofing and press-related colour evaluation according to ISO 3664. D65 is widely used for daylight-based assessment in industrial, textile, product and material workflows according to ISO 3668. The ability to move between both conditions makes the device useful for projects that connect print, packaging, products and materials.
UV control is especially important in modern print and packaging workflows. Paper, inks and substrates may contain optical brighteners that react differently depending on UV content. The DLS proofTop Multi 0B allows users to evaluate D50 and D65 with or without UV and also includes a UV-only mode for detecting optical brighteners. This supports colour matching according to older and newer proofing requirements and helps teams evaluate the visual influence of fluorescence more precisely.
For print and proofing, the system supports the requirements of FOGRA39 and FOGRA51/52-related workflows. This is relevant because modern papers and proofing standards can respond differently to UV components. By adjusting the UV content, users can evaluate colour under conditions that better reflect the intended proofing or production context.
Continuous dimming allows the illumination to be adjusted without colour shift. This is an important advantage for soft proofing applications, where the brightness of the proofing light may need to be adapted to the brightness of a calibrated monitor. The USB interface further supports professional soft proofing workflows and makes the system suitable for environments where printed and screen-based colour evaluation need to be aligned.
The LED system requires no warm-up phase after switching on. Stable viewing conditions are available quickly, which is useful in daily studio and production routines. Compared with fluorescent lamps, the system provides a significantly longer operating life of more than 50,000 hours and does not require tube replacement. This reduces maintenance effort and supports more stable lighting over the operating life of the device.
The DLS proofTop Multi 0B provides ISO-compliant illuminance of 2,000 lux and a high colour rendering value of CRI Ra ≥95. It offers exact colour coordinates for D50 and D65 and low metamerism indices in both the visible and UV ranges. These technical features support reliable visual comparison between proofs, standards, production samples and supplier submissions.
Metamerism is one of the most common reasons for colour mismatch. Two samples may appear to match under one light source but differ under another because of differences in ink, pigment, dye, substrate, coating or material composition. By enabling D50, D65 and UV-based assessment, the proofTop Multi helps teams detect such risks before approval, shipment or final production.
The sampling area is finished in neutral matte grey according to Munsell N7. A neutral surround is essential for serious colour evaluation because strong background colours can influence visual perception and distort judgement. The matte grey environment supports balanced comparison of proofs, materials and production samples without unnecessary visual interference.
For printing and packaging, the proofTop Multi 0B is suitable for evaluating contract proofs, press sheets, folding cartons, labels, inserts, substrates and finishing effects. It helps printers and brand teams discuss colour under controlled conditions and make more transparent approval decisions. For packaging suppliers, it supports communication between print, substrate, coating and final brand colour appearance.
For product design, plastics, coatings and industrial manufacturing, the device supports visual comparison between colour standards, supplier samples, coated parts, moulded components and production materials. It can be used alongside spectrophotometers and physical colour standards to create a more complete quality-control process.
Fashion, beauty, consumer goods, food and beverage, toys, hard home and medical products also benefit from controlled proofing light when colour influences brand recognition, perceived quality, safety, category coding or product value. The device helps teams move beyond subjective inspection under uncontrolled ambient light and toward a more professional approval workflow.
The JUST Normlicht DLS proofTop Multi 0B is therefore a compact yet technically advanced LED proofing solution for colour-critical environments. It connects standardised visual assessment, soft proofing, UV evaluation and practical studio use in one professional device, helping teams make colour decisions with greater confidence from proof to production.
Key Benefits
- Professional LED proofing light for desk use
- Optional trolley turns it into a mobile proofing station
- Suitable for print formats up to 2B / 50 × 70 cm
- Lighting area of approximately 70 × 50 cm
- D50 and D65 switchable according to ISO standards
- D50 and D65 each available with or without UV component
- UV-only mode for detecting optical brighteners
- Supports FOGRA39 and FOGRA51/52-related proofing workflows
- Continuous dimming without colour shift
- USB interface for soft proofing applications
- No warm-up phase after switching on
- LED operating life above 50,000 hours
- ISO-compliant illuminance of 2,000 lux
- CRI Ra ≥95 and low metamerism indices
- Neutral matte grey Munsell N7 sampling area
FAQ
What is the JUST Normlicht DLS proofTop Multi 0B used for?
It is used for professional visual proofing, colour assessment, print evaluation and quality control under standardised LED lighting conditions.
Which light sources are available?
The device is switchable between D50 and D65, each with and without UV component, and also includes a UV-only mode for detecting optical brighteners.
Is the proofTop Multi 0B suitable for soft proofing?
Yes. It includes continuous dimming without colour shift and a USB interface, making it suitable for soft proofing workflows with calibrated monitors.
What print format can be evaluated?
The device is designed for viewing formats up to approximately 2B, or 50 × 70 cm, with a lighting area of around 70 × 50 cm.
Why is UV control important?
UV control helps evaluate optical brighteners and fluorescent effects in papers, inks and substrates, which is important for modern proofing and packaging workflows.
Does the device replace a spectrophotometer?
No. It supports controlled visual assessment. For complete quality control, it should be used together with measurement devices, approved standards and production proofs.