Window Pull HDR: Fix Blown-Out Windows in Interior Photos (2026)

Every interior photographer knows the frustration: the room looks perfect, but the windows are blown out into pure white rectangles. The contrast between a dim interior and bright daylight outside is typically 5–8 stops — far beyond what a single exposure can hold. The fix is called a window pull: you take the correctly exposed window view from your darkest bracket frame and blend it into the final interior image.

This guide shows you how to shoot for a window pull and finish it two ways — a quick all-in-one merge in Luminance HDR, and a pro-level two-exposure blend in GIMP for maximum control.

Why windows always blow out

Your camera exposes for one brightness level. Meter for the interior and the windows clip to white; meter for the windows and the room goes black. HDR bracketing only solves this if your bracket set actually includes a frame where the outdoors is correctly exposed. A common beginner mistake is shooting −2/0/+2 EV around the interior exposure — which can still leave the −2 EV frame too bright outside. For window pulls, anchor your brackets to the outdoor exposure, not the room.

Step 1: Shoot brackets that cover the outdoor exposure

Before shooting the full set, take a test shot exposed for the view outside the window — spot-meter the brightest outdoor area, or simply dial the exposure down until the sky looks right. Note that shutter speed: your darkest bracket frame must be at least that dark. A practical starting point for interiors:

• 5 brackets, 1 EV apart (−4 to 0 relative to the interior exposure) covers most rooms.
• For very bright views (snow, sea, south-facing glass), extend to 7 brackets or widen the spacing to 2 EV.
• Use a tripod and a 2-second timer or remote so every frame aligns — see our exposure bracketing guide for the full shooting checklist.
• Lock white balance, aperture, focus, and ISO across the set; only the shutter speed changes.

The −2 to −3 EV frame (relative to the interior) is usually the one carrying a clean window view. If the sky is still clipped there, you didn’t go dark enough — reshoot darker.

Step 2: The quick version — merge in Luminance HDR

If the scene is static and the contrast is moderate, a single careful merge gets you most of the way:

1. Open the HDR Wizard in Luminance HDR and load the full bracket set (quick-start walkthrough here).
2. Enable auto-align and anti-ghosting — curtains and foliage move between frames.
3. Merge to a 32-bit HDR file.
4. Tone map with a highlight-friendly operator. Drago or Reinhard ’05 with a conservative bias protects the window view far better than aggressive Mantiuk settings. Watch the histogram: the moment the window area flattens to white, back off.

This takes a few minutes and works for mild contrast. When the outdoor view still looks washed out or muddy gray, move to the pro method below.

Step 3 (pro method): Blend two exposures in GIMP

For listing-grade results, blend two renders with a layer mask — full control over each region:

1. In Luminance HDR, tone map the merged file optimized for the interior (bright, welcoming room — don’t worry if the windows blow out) and export it as a 16-bit TIFF.
2. Tone map the same HDR file a second time optimized for the windows (darker overall, clean outdoor detail) and export it too. Drago with a low bias works well here.
3. Open both in GIMP as layers, window version on top.
4. Add a layer mask to the top layer and paint black over the window areas with a soft brush, revealing the clean windows from the layer beneath. Zoom to 100% and feather the edges so the transition is invisible.
5. Flatten and do final color correction.

The same idea works in any layer-based editor. For tone mapping settings that keep highlights intact, see our natural HDR settings guide.

Doing it in Photoshop or Lightroom

The technique is identical in Adobe’s tools: merge to HDR in Lightroom, open as a Smart Object in Photoshop, and use Select > Sky (or a manual mask) to blend in the window exposure. Luminance HDR’s advantage is simply that the whole pipeline is free — the masking craft is the same everywhere.

Window pull approaches at a glance

Flambient — blending flash-lit frames with ambient HDR — is a separate discipline, covered in our real estate HDR workflow guide.

Frequently asked questions

What is a window pull in real estate photography?

A window pull is the technique of replacing blown-out white windows in an interior photo with the correctly exposed outdoor view taken from a darker bracket frame. It’s standard practice in real estate photography because buyers want to see the view, not white rectangles.

How many brackets do I need for window pulls?

Five brackets 1 EV apart is the practical minimum for most interiors — the key requirement is that the darkest frame is dark enough to hold the outdoor exposure (often −2 to −3 EV relative to the room). Very bright views may need seven brackets or 2 EV spacing.

Can I do a window pull from a single RAW file?

Partially. You can export darker virtual exposures from one RAW and blend them in, which rescues the window if it isn’t fully clipped — but a truly blown-out window has no data to recover. See our single-RAW HDR guide for the honest limits.

Why do my windows look gray instead of white after a pull?

You pulled the exposure down too far. Real windows in daylight are bright — aim for detail with brightness, not a murky gray rectangle. Raise the window layer’s exposure slightly, or pick a less dark source frame.

Does Luminance HDR do window pulls automatically?

No — there is no one-click window pull. Luminance HDR handles the merge and the tone mapping; the selective blending is done manually with layer masks in GIMP or Photoshop. That’s also how the pros do it in paid software.

Luminance HDR is free and open source (GPLv2). Download it here.