Photographing artwork without glare on the glass

The instinct when photographing a framed piece is to tilt it slightly so the reflection of the window falls out of shot. It works, and it introduces a worse problem: the piece is now a trapezoid. Straight edges are the one thing a rectangle absolutely must have, and a slightly keystoned print reads as careless before anyone consciously notices why.

So the real question is how to photograph a flat rectangle square-on, with a sheet of glass in front of it, without the glass showing you the room.

Reflections obey one rule

Light bounces off glass at the same angle it arrives. That single fact tells you everything about where reflections come from and how to remove them.

If you stand directly in front of a piece, the glass shows you whatever is directly behind you. Not the window to your left — the wall behind your back. This is why moving the lamp usually fails and why moving yourself usually works.

So: photograph square-on, and make sure what is behind the camera is dark and featureless.

The black cloth trick

The professional approach is disarmingly cheap. Hang a large piece of black fabric behind and around the camera position, with a hole for the lens, and the glass has nothing bright to reflect.

A blanket over a doorway, a black sheet pinned to a shelf, or simply photographing in a dark room with the artwork lit from two sides at forty-five degrees — all work. The lighting comes from the sides, at an angle that bounces away from the lens, while the camera sits in darkness.

If you photograph a lot of framed work, spend twenty minutes setting this up once. It converts an impossible job into a routine one.

Light from the sides, never the front

Two lights at forty-five degrees, one either side, is the standard copy-work setup and it exists precisely to avoid this problem. Light arriving at forty-five degrees bounces away at forty-five degrees, which is away from a camera sitting straight on.

If you only have one light, put it to one side at that angle and use a white card on the other to fill. You will get a slight brightness gradient across the piece, which is worth correcting afterwards, and no glare, which is not correctable afterwards.

Overhead light is the worst option for glazed work. It bounces straight down the front of the glass into the lens.

Take the frame off

The simplest solution, and the one most artists resist: photograph the work unframed, then photograph it framed separately as a secondary image.

Unframed, you have no glass, no reflections, no depth-of-field issue from the frame edge, and the full surface texture is visible — which is the thing you actually want to sell. Then one framed shot afterwards shows the buyer what they receive.

For prints this is easy. For originals under glass it means unscrewing something, and it is still worth doing once per piece.

Watch for keystoning even without glass

Whether or not glass is involved, the geometry matters.

Get the camera exactly level with the centre of the work, and exactly square to it. Any tilt produces converging edges — the top narrower than the bottom, or one side taller than the other. On a photograph of a rectangle, that is immediately visible even to people who could not name what is wrong.

A tripod makes this trivial. Without one, mark a spot on the floor, hold the phone at the height of the work's centre, and use your camera's grid overlay to align the edges with the gridlines.

Colour is the other half

Glare handled, colour is what remains, and it is a separate discipline. Photograph in a single light source, avoid coloured walls nearby — a red wall two metres away will tint a white-bordered print — and if precision matters, photograph a colour reference card alongside the first frame so you can correct against it.

What restaging can do here

Once you have a clean, square, glare-free photograph of the work, putting it into a room setting is the part that sells prints, and it is the part that is genuinely impractical to photograph yourself. Brushwork and paper texture are preserved from your original, so the surface argument survives into the room shot.

What it cannot do is remove a reflection that is already in your photograph — a bright window across the middle of a print is part of the recorded image. The black cloth costs nothing and has to come first.