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Fotometis

Create an HDR photo

An HDR photo carries extra brightness in its highlights, and Fotometis calls that room HDR Headroom. See About HDR.

Open the Scopes pane

Section titled “Open the Scopes pane”

Click the scopes button in the pane bar. The pane floats over the top right of the canvas. Drag the header to move it. Click the cross to close it. See The Fotometis window.

The chart measures the photo on the canvas. Four buttons choose what it draws: RGB, Luma, Parade, and Wave. Below the chart, Shadows and Highlights light up when pixels sit hard against that end of the range.

Raise the headroom

Section titled “Raise the headroom”

The HDR Headroom slider is at the foot of the Scopes pane. It runs from 0 to 4 stops.

  1. Drag the slider to 1 stop or more.
  2. Look at the photo on the canvas.
  3. Move the slider until the highlights look the way you want.

A line in the chart marks where white falls, and the tones past it are headroom.

Your display may not reach 4 stops. Fotometis then shows as much of the headroom as the display has. An export can also hold less headroom than you set.

Raise the headroom on a photo that has bright highlights in it: water, cloud with the sun behind it, or a lit window.

The Scopes pane over the canvas, with the HDR Headroom slider raised from 0.0 stops to 4.0 stops. The photo is an egret on dark water. The sidebar holds Exposure at +2.00 EV, Contrast at +19, Highlights at +77, and Shadows at -81.

Export the photo

Section titled “Export the photo”

Fotometis writes the headroom as an ISO 21496-1 gain map, and software without the map shows the SDR photo. See About HDR.

See Export a photo.

See the result

Section titled “See the result”

A display that supports HDR and software that reads gain maps show the expanded highlights. See About HDR.

Next

Section titled “Next”