Basic experiment of exposure synthesis using luminance mask

Notes for shooting:

The camera heals the tripod, try to use the shutter line, with the same settings to take at least 2 different exposure photos, here for example we choose a relatively simple 2 photos, one to the sun exposure, so that the sun has a more correct display, the other one we exposed to the reef exposing the rock to the right exposure.

Figure A: 1/100 seconds, figure 21/40 seconds, the other settings are exactly the same.

Select 2 photos in the Lightroom, right-click to edit in the application and choose to open it as a layer in Photoshop.

Photoshop automatically opens 2 pictures, and as 2 layers, please be careful to put the one under the exposure and put the exposed one below.

Select the Mindomon layer, create a brightness mask, there are many ways to create a board, the current fee and free action also have a lot.

I have made a script that can also be created.

It automatically creates 15 different brightness masks.

Ready to start merging layers, first select the appropriate brightness mask, this is the most critical, brightness mask is just a constituency tool, as to the final choice of which, or control in your hands.

Bright1 I think there are too many things involved.

Bright2 I think it's more appropriate.

Bright3 I think the most suitable.

Selecting Bright3 in the channel panel channels, holding down CTRL and clicking the BRIGHT3 Small icon, generates the following selections.

The brightness mask is automatically feathered, so don't go to the shape of the selection. Back to the Layers panel, click the button in the lower right corner to add a layer mask.

Photoshop will automatically create our selected BRIGHT3 brightness mask.

The screen effect also automatically changes to:

Of course, this photo is only used to show how to use the brightness mask for exposure synthesis, from the angle of shooting there are many problems.

Three picture contrast effect.

"The use of brightness masks for exposure synthesis of the basic experiment" for the original article, the author copyright, do not reprint without permission.

Category:

• PS Image Processing