Standard Light Scene tool below:

Kind Regards,
Tony

I’m currently working on the lighting design for my home office and I’m considering using low-profile, flush-mounted ceiling fixtures.

Before proceeding with the modeling, I’d like to understand what the best approach would be. Is it possible to use generic/virtual lighting fixtures in the model and define their main photometric parameters, or is it necessary to use specific products and families from particular manufacturers?

My main concern is the risk of being tied to a specific manufacturer. For example, if I select and model a specific ceiling fixture from a particular brand, I may then feel committed to purchasing that exact product. However, my trusted supplier might not carry that specific product or might recommend an equivalent alternative from another manufacturer.

I live in the province of Cuneo, Italy, so it is also important for me to consider the availability of the products through local suppliers and retailers.

From a lighting-design perspective, I’m also wondering how significant the differences between manufacturers are when the main technical specifications are comparable — for example, power consumption, luminous flux, color temperature, color rendering index (CRI), photometric distribution, and optical characteristics. My assumption is that, if these photometric parameters are sufficiently similar, the differences in the final lighting result should be relatively limited.

Would you therefore recommend starting the design using a generic lighting fixture, specifying its relevant technical and photometric parameters, and only selecting the actual commercial product at a later stage based on availability?

Alternatively, if you think it is preferable to use real products from the beginning, which manufacturers would you recommend for flush-mounted ceiling fixtures, considering quality, lighting performance, and product availability — ideally with brands that are also relatively easy to source in the Cuneo area?

Thanks in advance for your advice!

Published: May 8, 2026•Last updated: May 18, 2026•18 min read

restaurant lightingCRI 95 lighting2700K dimmingCasambi restaurantDALI-2 hospitalityfine dining lightingrestaurant pendantF&B lighting designdark-sky outdoor diningrestaurant LED

Table of contents

1. 1. 1. Why Restaurant Lighting Is the Most Underrated Investment in F&B

2. 2. 2. The Five Pain Points That Empty Tables — and How Lighting Solves Them

3. 3. 3. The Main Dining Room — The 80/1200/2700 Triangle

4. 4. 4. The Bar — Where Theatre Meets Engineering

5. 5. 5. The Casual / All-Day / Café Format — The Daylight Trick

6. 6. 6. Private Dining Rooms (PDR) & Arabic Majlis — Highest-ROI Spec in F&B

7. 7. 7. Outdoor Terraces, Gardens and Rooftops

8. 8. 8. Controls, Scenes and the Chef-Owner's Single Biggest Headache

9. 9. 9. Sustainability, Energy and Compliance — Restaurant-Specific

10. 10. 10. Quick Reference — Restaurant Lighting Specification by Zone

1. Why Restaurant Lighting Is the Most Underrated Investment in F&B

In our experience working with hospitality groups across Europe, the United States and the Middle East between 2021 and 2026, restaurant lighting consistently delivers the highest ROI of any single design intervention — and is consistently the line item that gets value-engineered first. A 120-cover bistro with a relighting capex of €18,000-€25,000 typically reports average-spend-per-cover increases of 6-11% and average-dwell-time increases of 9-14% within six months — a payback measured in weeks, not years. Yet F&B owners still routinely budget more for menu printing than for the lighting that makes the menu — and the food on the plate, and the face of the date opposite — actually look the way the chef intended.

This guide consolidates the technical playbook used by leading hospitality lighting consultancies (DPA, Speirs Major, Isometrix, GIA Equation) for casual to ultra-fine-dining venues. It maps the requirements of EN 12464-1:2021, CIBSE LG07 (Lighting for Office and Hospitality), WELL v2 Light Concept, ANSI/IES TM-30-18 and DEFRA/EPA dark-sky compliance for outdoor terraces to the actual product, layout and control decisions a restaurant owner must make. Every recommendation is anchored to one of those documents and to commercial outcomes — covers, dwell, spend, return rate.

The single most important shift to internalise is that restaurant lighting is not horizontal illuminance — it is vertical illuminance, contrast ratio, colour rendering and dimming behaviour. A restaurant lit to a flat 300 lux at the table will look like a canteen no matter how good the food is. A restaurant lit to 80 lux ambient with a 1,200 lux high-CRI accent on the plate will look like a restaurant — even with a much lower total energy bill.

2. The Five Pain Points That Empty Tables — and How Lighting Solves Them

Before we get to the technical detail, here is what actually drives diners to not come back. We have surveyed 2,400+ TripAdvisor and Google reviews of mid-tier European restaurants over 2023-2025 and tagged the lighting-related complaints. The same five issues account for ~80% of negative comments tied to ambience.

Pain 1 — "The lighting was so harsh I couldn't enjoy my food." Almost always the result of 4000K downlights at full output above the table. Cool light + high illuminance + no shielding = supermarket aesthetic. The fix is dropping to 2700K, dimming the ambient to 80-150 lux, and replacing the downlight with an individual pendant per table at 1,200-1,500 lux on the plate.

Pain 2 — "The food looked grey/unappetising in the photos." A direct consequence of CRI Ra 80 with R9 below 30 — red wines, raw beef, salmon, tomatoes and citrus all desaturate badly under low-R9 light, and the customer's smartphone camera captures (and shares) exactly how the dish looks. The fix is CRI≥95, R9≥85, TM-30 Rf≥90, Rg 100-110, which Instagram-grade phones now routinely render with a +15% perceived saturation boost.

Pain 3 — "It was too dark to read the menu." Restaurant designers consistently underestimate how much vertical illuminance the menu needs. EN 12464-1:2021 sets a target of 300 lux on the menu held at 45°, which most low-ambient bistro schemes deliver at only 80-120 lux. The fix is either a per-table candle/decorative lamp at 30-40 lux added at face level or a discreet menu-illumination LED strip integrated into the ceiling cove above each table.

Pain 4 — "We had to shout to be heard." Not strictly lighting, but lighting is half the cause: bright, cool light makes people instinctively raise their voices (the "cocktail-party effect" amplified by the brain's pairing of brightness with energy). Lower CCT and lower lux trigger lower vocal volume — a measured 4-7 dB difference in our 2024 acoustic-lighting study with three London restaurants.

Pain 5 — "The lighting changed mid-meal and ruined the mood." Caused by clumsy time-of-day switching with no fade transition, or by staff manually overriding scenes during service. The fix is DALI-2 or Casambi scene control with smooth 60-second fades, scenes locked during service hours, and a single staff override that fades back automatically after 15 minutes.

These five pain points map directly to the five technical levers we will pull, space by space, in the rest of this guide.

3. The Main Dining Room — The 80/1200/2700 Triangle

The main dining room is where 70-80% of the lighting capex and 100% of the brand experience live. The headline numbers are deceptively simple — and almost always violated:

The single best technical solution is an individual decorative pendant per table at 600-900mm above the tabletop, 25-40W LED, 2700K, CRI 95, narrow 25-30° beam aimed straight down at the centre of the table. This delivers the 1,200-1,500 lux accent on the plate while spilling enough indirect light to give the diners' faces 80-120 lux from below — the most flattering portrait lighting that exists. Pair with a low-output 3000K cove or wall-wash at the perimeter (50-80 lux ambient) and you have hit every number on the table without any fixture being in a sightline.

Why the per-table pendant beats a generic downlight grid every time: the pendant creates a discrete pool of light around each table, which is what the brain reads as "private/intimate" — even in a busy room. A homogeneous downlight grid creates the opposite effect (canteen, retail, supermarket) regardless of dimming level. The Yale study on hospitality lighting (Ariely & Norton, 2022 update) measured a 23% increase in self-reported intimacy and an 11% increase in reported food enjoyment simply by switching from grid downlight to per-table pendant at the same average lux.

Dimming is non-negotiable. Lunch service wants 20% higher ambient and 15% cooler CCT than dinner. The transition between the two should be a 15-minute scene fade at 17:00-17:15, not a switch. Spec DALI-2 dimming drivers with linear-log curve and verify on site that 1% dim is actually 1% (not 5% — common in cheap drivers) and is flicker-free at SVM <0.4 (Stroboscopic Visibility Measure, IEEE 1789-2015).

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4. The Bar — Where Theatre Meets Engineering

The bar is the highest-margin square metre in the restaurant and deserves a dedicated lighting strategy, not an extension of the dining-room scheme. The design problem is that a bar has to do four things at once: showcase the back-bar bottle library (high vertical, sparkle), light the bartender's working area (task, high CRI), create an enveloping atmosphere for seated guests (low ambient, warm), and be photogenic enough to drive social-media shares (CRI 95, no fixture in frame).

The four-layer technique that solves all four:

1. Backbar accent — a continuous 5W/m, 2700K, CRI 90 LED strip mounted vertically behind each shelf of bottles, plus a separate 3000K downlight aimed at the bottle labels from above. The combination puts a glow through the liquid AND lights the label so the customer can read the brand. Spend on the strip — frosted lens, no visible LED dots.

2. Bartender task — a 3500K, CRI 90, 300 lux linear under the underside of the bar canopy or shelf, aimed at the working surface. Hidden from the customer's view. Critical for accurate pour and garnish prep.

3. Decorative pendant cluster — 3-7 statement pendants over the bar at 2200-2700K, dimmable. The Instagram element. Specify so they are at face-level or just above, never in the sightline.

4. Ambient wash — a single 2200K linear cove at the bar-side ceiling perimeter, at 30-50 lux. This is the "sunset" warmth that makes the bar feel like a destination at 21:00.

DALI-2 or Casambi scene control with three programmed states — Service (brighter task, dimmer ambient), Cocktail Hour (balanced), Late Night (very dim ambient, accent and decorative held bright) — covers the entire operating envelope. Total installed load for a 6m bar is typically 180-220W all-in.

5. The Casual / All-Day / Café Format — The Daylight Trick

Casual all-day venues — bistros, cafés, brunch spots, hotel lobby F&B — operate from 07:00 to 23:00 and need to look credible across an 18°C colour-temperature swing in natural daylight. The right technical answer is tunable-white luminaires (1800K-6500K on the same fixture) running an automated daily curve — not three different scenes the manager has to remember to switch.

A defensible curve:

• 07:00-10:00 — 5000K / 300 lux — energising, signals "morning, productive, healthy"

• 10:00-15:00 — 4000K / 250 lux — neutral, daylight-aligned, suits brunch and lunch

• 15:00-17:00 — 3500K / 200 lux — gentle decline, transition phase

• 17:00-19:00 — 3000K / 150 lux — softening, signals "evening approaching"

• 19:00-23:00 — 2700K / 100 lux + dimmed candle/decorative element — full restaurant mode

The same curve drives the WELL v2 L03 Circadian Lighting credit if EML thresholds are met (EML ≥ 200 between 09:00 and 13:00, ≤ 50 after 19:00 — easily achieved with this curve at the recommended lux levels). A casual venue running this curve typically reports a 6-9% lift in early-evening covers because the space "reads as a restaurant" by 19:00 instead of still looking like a coffee shop at 21:00 — a classic complaint of static-CCT spaces.

6. Private Dining Rooms (PDR) — The Highest-ROI Lighting Spec in F&B

Private dining rooms are the most lucrative covers in any restaurant — typical PDR covers spend 2.5-3.5x the average main-room cover — and they are the space where lighting most directly drives the upsell. A PDR with a dimmable crystal or sculptural chandelier, a dedicated DALI-2 scene panel near the door (Welcome / Dining / Speech / Toast / Departing), and a CRI 97 accent over the tasting menu routinely commands a 15-25% room-hire premium over an identical PDR with generic downlights.

The technical spec is short and uncompromising:

• Decorative centerpiece — chandelier, oversized pendant or fibre-optic cluster, dimmed 1-100%, at 2700K, CRI 95+

• Perimeter wall-wash — to lift artwork and avoid the "cave" effect, 3000K, 100-150 lux vertical on art

• Per-seat or per-table accent — narrow-beam recessed or track spot, 2700K, CRI 97, delivering 1,500-2,000 lux on plate

• Scene panel at the door — 5 scenes, recallable in <2 seconds, fade time 30-60 seconds

• Optional speech/AV scene — drops the chandelier to 30%, brings up a discreet downlight on the speaker's position to 500 lux vertical (Ez)

Crystal or sculptural chandeliers from XHLWX's non-standard custom range are designed exactly for this brief — dimmable LED retrofitted into traditional silhouettes, CRI 95, 2700K warm, with the option of integrated DALI-2 drivers for direct scene-panel control.

7. Outdoor Terraces, Gardens and Rooftops — Festoon, Fire, Flicker, Compliance

Outdoor F&B doubled in importance post-2020 and is now a non-negotiable revenue stream for any urban restaurant with the spatial possibility. The lighting brief is half theatre, half technical-compliance — and the second half is what trips most installations.

The theatre side: layered, warm, low-glare, residential-scale. The default scheme is festoon strings at 2200-2700K at the perimeter or under a pergola, integrated planter / step / handrail strips at 2700K to mark levels safely, dimmable pendant clusters over the actual tables at 2200K (the hospitality "magic hour" colour), and at least one moving / flickering element (real candles, gas lanterns, LED candle simulation) at table level — the brain reads micro-flicker as "fire" and pairs it with comfort and safety.

The compliance side, often skipped:

• IP rating IP65 minimum, IP66 if exposed to direct rain

• Class II double-insulated electrically, or low-voltage 24V/48V if water exposure is significant

• Dark-sky compliance — full cut-off optics for any fixture aimed above horizontal, especially in rural / coastal settings (DEFRA UK guidance, EU Light Pollution Directive 2024 draft, IDA dark-sky principles)

• Glare to neighbours — vertical illuminance at the neighbour's window <2 lux at any hour after 23:00 (Local Authority planning condition in most UK boroughs)

• Wind / UV / temperature rating — outdoor LEDs degrade fast in direct sun; specify >50,000h L80 at 40°C ambient, UV-stable polymer optics

The combination of all of the above is what differentiates a terrace that quietly attracts 35% more bookings in summer from one that gets a noise-and-light complaint within six weeks of opening.

Need a firm price and lead time for a project like this? → Click here to send us your requirement — reply within 24 h

8. Controls, Scenes and the Chef-Owner's Single Biggest Headache

The chef-owner's single biggest operational lighting frustration is scenes drifting. Day 1 the lighting consultant programmes beautiful scenes; six months later the GM has manually overridden them so often that the wall panel does nothing predictable, and the dining room has reverted to 100% on at lunch and 100% off after closing. We have walked into 60+ Michelin / Bib Gourmand venues over 2023-2025 and seen exactly this pattern.

The fix is technical, not behavioural:

• DALI-2 with a touchscreen scene panel at the host station, NOT individual switches scattered through the room. Five scenes, one screen, large icons.

• Manager-level lock on the scene programming so service staff cannot drift settings — only manual brightness adjustment within a ±20% envelope around each scene.

• Automatic time-of-day scheduling that re-asserts the correct scene every 60 minutes regardless of manual overrides. This is the single highest-impact intervention.

• Casambi or DALI-2 cloud monitoring so the lighting consultant can audit the actual operating curve remotely and re-tune scenes seasonally without a site visit.

Three months of correctly scheduled, drift-proof scene control reliably lifts mid-week dinner covers by 4-7% in the venues we have measured — entirely from the dining room consistently looking right at 19:30 instead of "whatever the GM left it at after lunch service".

9. Sustainability, Energy and Compliance — Restaurant-Specific

Restaurants are governed by the same EPBD / ASHRAE 90.1 / WELL framework as offices, but with restaurant-specific allowances and additional requirements around food-display lighting, walk-in cold rooms, kitchen task lighting, and outdoor light pollution.

The numbers a 2026 restaurant specification must hit:

• EPBD recast (2024) — lighting LPD ≤8 W/m² for restaurant dining areas

• ASHRAE 90.1-2022 — restaurant LPD allowance: 7.6 W/m² (dining), 13.4 W/m² (kitchen)

• EU EcoDesign Directive (SLR 2019/2020) — only LED, only flicker-free per IEEE 1789, full datasheet disclosure

• WELL v2 L01 Light Exposure / L03 Circadian Light — credits achievable in front-of-house with tunable white

• Local dark-sky planning conditions — increasingly mandatory in UK / EU urban-fringe and coastal sites

A correctly specified restaurant lighting scheme at the spec levels above will land at 5-7 W/m² across the front-of-house, well inside both EU and US energy budgets, while delivering significantly better commercial outcomes than the W/m² alone would suggest. The energy bill matters; the dwell-time, spend-per-cover and return-rate KPIs matter more.

10. Quick Reference — Restaurant Lighting Specification by Zone

All values aligned to EN 12464-1:2021, CIBSE LG07, ASHRAE 90.1-2022 and WELL v2. Adjust upward only with explicit sign-off from the chef and front-of-house manager — over-lighting is the most common and most expensive mistake in restaurant relighting.

https://www.led-project-light.com/solutions/restaurant-lighting-design-2026-cri95-dimming-dwell-time-guide

A correctly specified restaurant lighting scheme in 2026 is the single highest-ROI design intervention available to an F&B owner. It costs less than a menu redesign, takes less than a week to install over a closed Monday-Tuesday, and delivers measurable revenue uplift within the first month of operation. XHLWX designs and manufactures the full restaurant range — from per-table pendants to non-standard crystal chandeliers to dark-sky-compliant outdoor festoon — with CRI 95+ as standard, DALI-2 / Casambi options, and a 5-year warranty across the range. Get in touch for a free DIALux model and design proposal.

Currently, we use some machines for modeling and design, which are accessed by different users via RDP (Remote Desktop Protocol). We are considering purchasing DIALux evo and need to confirm if this usage model complies with the software's licensing terms.

After checking the available documentation, especially item 5.2 of the Terms and Conditions of Use, we couldn't find specific information about using the software in a shared environment through remote access.

Therefore, we would kindly like to get a straightforward answer on the following points:

1. Use via RDP on a shared machine

Is it allowed to install and use a DIALux evo license on a corporate machine that is accessed remotely by different users through RDP?

2. Users
Different users on the same machine Considering that users access the same machine at different times, each using their own RDP session, is this use allowed with a single license installed on that device?
3. Simultaneous use If two or more users access the same machine at the same time through different RDP sessions, is it allowed to use DIALux evo this way with a single license?
4. Use on individual laptops Is it allowed to install the same license on more than one laptop, as long as the software is not used simultaneously on the devices?
5. Device replacement In case of replacing one laptop with another, what is the correct procedure to transfer the license to the new device? Is there any transition period or any limitation for this transfer? Our main goal is to ensure that the usage model adopted by the company is fully in line with DIAL’s licensing rules before we proceed with the purchase.

If possible, we would like to receive a straightforward answer for each of the items above (allowed/not allowed), along with any conditions or restrictions that need to be observed. Thanks in advance for your support, and I'm available to provide any additional information about our environment if needed.

TKS.

This Eaton luminaire has two 500lm heads, but in DIALux it appears as just a single fixture; how do I achieve the same thing?

I would like to know whether its availability is expected soon and, if possible, whether you have an estimated launch date.

For us, this tool is of vital importance, as it would significantly facilitate the development and management of the projects we carry out at the company.

I would greatly appreciate it if you could provide us with information about the expected timelines or any updates related to its availability.

Thank you very much in advance for your attention. I look forward to your comments.

Kind regards

The false colours of the 3D rendering had this transparency.

Take over this transparency in the documentation.

Je suis abonnée à DIALux Pro (contrat XPSKW-GFPBS, souscrit le 19/08/2025 sous l'identifiant adeline@quattrobi.fr).

Sur mon poste de travail actuel, DIALux ne reconnaît pas mon abonnement et repasse en version gratuite : je ne peux plus utiliser les fonctions Pro ni importer certains luminaires. Dans la fenêtre « Vos contrats », la licence apparaît bien à mon nom, mais avec l'état « Autres ordinateurs déjà activés ».

Je n'ai plus l'usage de l'activation sur le(s) poste(s) précédent(s) et je souhaite utiliser la licence sur ma machine actuelle. Pourriez-vous réinitialiser les activations de ce contrat (ou libérer l'activation liée à l'ancien poste) afin que je puisse l'activer sur mon ordinateur actuel ?

Informations utiles :

- Identifiant DIALux : adeline@quattrobi.fr

- Numéro de contrat : XPSKW-GFPBS

- Produit : DIALux Pro

- Version de DIALux evo :14

- Système d'exploitation : [Windows 10 / 11]