A digital proof lands in your inbox and it looks right. The composition, the colours on your screen, the framing - it matches what you briefed. It is tempting to reply "approved" and move on, because the proof answers the question that has been on your mind for weeks. But a digital proof answers one specific question well and several other questions not at all. Buyers who treat "the proof looks good" as "the whole order is settled" are the ones surprised later by a material, a mounting or a scale question nobody actually closed.
This guide sets out exactly what a digital proof confirms, what a physical sample adds, and which decisions can only be closed by a site review - so each approval is scoped and nothing quietly slips through as assumed.
What a digital proof genuinely confirms
A digital proof is strong evidence for the things you can judge on a screen: composition, layout, the relationship of elements, the general direction of colour, and whether the piece matches the brief's intent. For those, an approval is meaningful. The sample and proof approval guide sets out this boundary in detail. Confirming visual direction from a proof is real progress; it does not by itself confirm physical material, finish, mounting or transport condition, which a screen cannot show.
What a screen cannot tell you
Two things make a screen unreliable for physical decisions. First, colour on a monitor is not colour on a material - brightness, calibration and the surface itself all shift it. Second, a screen has no texture, weight, sheen or depth, so an impasto surface, a metal finish or a canvas tooth cannot be judged from a proof. Treat on-screen colour as a direction to confirm, not a final match, and treat any surface quality as unconfirmed until you see it physically. Knowing what a screen cannot show keeps you from approving a physical property you have not actually seen; it does not slow the project, it just puts each decision where it can be judged.
What a physical sample adds
A physical sample closes the questions a proof cannot: actual colour on the actual material, surface texture, sheen, and a real sense of weight and finish. For a large or repeated order, a sample is where material and finish get confirmed. It still does not, on its own, confirm how the finished piece behaves on your specific wall - that is the site's job. A physical sample confirms material and finish in the hand; it does not confirm scale-in-place, mounting or lighting in your room, which depend on the site.
What only a site review can close
Some decisions exist only in the real space and cannot be closed by any proof or sample. How the finished scale reads on the actual wall from the actual viewing distance. How the room's lighting falls across the surface at different times. Whether the mounting method suits the wall's construction. Whether a fixture, a sightline or a reflection changes the piece in place. These are site decisions. Recording them as open until a site review protects the order; closing them prematurely from a proof is where late surprises come from.
Scope every approval explicitly
The habit that prevents trouble is simple: whenever you approve anything, write what that approval covers and what it does not. "Proof approved for composition and colour direction; material, finish and scale-in-place still to confirm." That one sentence turns a vague "approved" into a scoped record. Keeping approvals scoped in a project record - as shown in the multi-zone project records guide - means a later question resolves against the record instead of a memory. Scoping each approval keeps responsibility clear; it does not add work, it just names what is already true.
How proof, sample and site fit together
The three stages are a sequence, not alternatives. The proof confirms visual direction. The sample confirms material and finish. The site review confirms scale, lighting and mounting in place. A later stage, the pre-shipment photo review, checks the finished pieces against the approved records before they ship. Each stage closes its own questions and hands the rest forward. Seeing them as a sequence keeps every decision at the stage that can judge it; it does not require every project to use every stage, only to be clear about which questions remain open.
Bring it into the inquiry
If you set this expectation at the inquiry stage - that a proof confirms direction, a sample confirms material, and a site review confirms placement - a supplier can plan the approvals with you instead of you discovering the gaps mid-project. The procurement guide connects these approval stages to the wider flow. When you want to agree the approval sequence for a specific project, you can set it out through Contact with your zones and open decisions.
FAQ: digital proof versus site review
What can I actually confirm from a digital art proof?
You can confirm the things a screen shows well: composition, layout, the relationship of elements, the general colour direction, and whether the piece matches the brief's intent. For those an approval is meaningful. Confirming visual direction from a proof is real progress; it does not by itself confirm physical material, finish, mounting or transport condition, which a screen cannot show and which stay open until seen physically or reviewed on site.
Why can't I approve final colour from a digital proof?
Because colour on a monitor is not colour on a material. Screen brightness, calibration and the surface itself all shift it, so a proof shows a colour direction, not a final match. Treat on-screen colour as something to confirm against a physical sample. Using the proof for direction keeps the project moving; it does not lock the final colour, which is confirmed on the actual material rather than on a screen.
What does a physical sample confirm that a proof cannot?
A physical sample confirms actual colour on the actual material, surface texture, sheen, and the real sense of finish and weight - none of which a screen can show. For a large or repeated order it is where material and finish get signed off. A sample confirms material and finish in the hand; it does not confirm how the finished piece reads at scale on your wall or under your lighting, which are site decisions.
Which wall art decisions can only be closed by a site review?
How the finished scale reads on the actual wall from the actual viewing distance, how the room's lighting falls across the surface, whether the mounting method suits the wall's construction, and whether a fixture or reflection changes the piece in place. These exist only in the real space. Recording them as open until a site review protects the order; closing them early from a proof is where late surprises come from.
How should I record an approval so nothing slips through as assumed?
Write what the approval covers and what it does not, in one sentence - for example, "proof approved for composition and colour direction; material, finish and scale-in-place still to confirm." Keep that scoped note in the project record. A later question then resolves against the record instead of a memory. Scoping each approval keeps responsibility clear; it does not add work, it just names what is already true.
Do proof, sample and site review replace each other?
No, they are a sequence. The proof confirms visual direction, the sample confirms material and finish, and the site review confirms scale, lighting and mounting in place; a pre-shipment photo review then checks finished pieces against the approved records. Each stage closes its own questions and hands the rest forward. Not every project uses every stage, but each remaining question should be clearly assigned to the stage that can judge it.
Can a supplier plan the approval stages with me before the order?
Yes. If you set the expectation at inquiry - proof for direction, sample for material, site review for placement - a supplier can plan the approvals with you rather than you finding the gaps mid-project. Agreeing the sequence early makes the project predictable; it does not commit either side to a price or schedule, which are confirmed against the agreed scope.
Is a digital proof enough for a small or repeat order?
A digital proof can be enough to confirm visual direction even on a small order, but material, finish and placement still need the appropriate check - a sample for a new material, a site review for a difficult wall. The right question is not order size but which decisions remain physical. A proof settles what a screen can judge; anything physical stays open until confirmed in the appropriate way.