Adding a Realistic Rainbow with Photoshop 2024

Adding a Realistic Rainbow with Photoshop 2024

Adding a realistic rainbow to an image using Photoshop 2024 can be a fun and creative process. Here’s a step-by-step guide to help you achieve this effect:

Step 1: Open Your Image

1. Open Your Image:

   - Open Adobe Photoshop 2024.

   - Go to `File` > `Open` and select the image to which you want to add a rainbow.

Step 2: Create a New Layer

1. Create a New Layer:

   - Go to `Layer` > `New` > `Layer` or press `Shift + Ctrl + N` (Windows) / `Shift + Command + N` (Mac).

   - Name this layer "Rainbow" and click `OK`.

Step 3: Create the Rainbow Gradient

1. Select the Gradient Too:

   - Choose the `Gradient Tool` (G) from the toolbar.

2. Create a Custom Gradient:

   - In the top options bar, click on the gradient preview to open the `Gradient Editor`.

   - Click `New` to create a new gradient.

   - Add color stops for each color of the rainbow (Red, Orange, Yellow, Green, Blue, Indigo, Violet). Position them evenly across the gradient.

   - Save the gradient by giving it a name, such as "Rainbow Gradient".

3. Apply the Gradient:

   - Ensure the "Rainbow" layer is selected.

   - Draw a linear gradient on the "Rainbow" layer, from left to right or diagonally, depending on how you want the rainbow to appear.

Step 4: Shape the Rainbow

1. Transform the Gradient:

   - Go to `Edit` > `Transform` > `Warp`.

   - Use the handles to warp the gradient into an arc shape, resembling a rainbow. Adjust until you are satisfied with the curvature.

Step 5: Blend the Rainbow

1. Change Blending Mode:

   - In the Layers panel, change the blending mode of the "Rainbow" layer to `Screen`. This will blend the rainbow more naturally into the image.

2. Adjust Opacity:

   - Reduce the opacity of the "Rainbow" layer to make it appear more realistic, as real rainbows are often semi-transparent.

Step 6: Add Gaussian Blur

1. Apply Gaussian Blur:

   - With the "Rainbow" layer selected, go to `Filter` > `Blur` > `Gaussian Blur`.

   - Adjust the blur radius to soften the edges of the rainbow, making it look more natural. A radius of 10-20 pixels often works well, but adjust according to your image.

Step 7: Mask the Rainbow

1. Add a Layer Mask:

   - Click the `Add Layer Mask` icon at the bottom of the Layers panel.

2. Blend the Edges:

   - Select the layer mask thumbnail.

   - Use a soft round brush with black color to paint on the mask and blend the edges of the rainbow into the scene. This will make the rainbow appear as though it is part of the natural environment.

Step 8: Final Adjustments

1. Adjust Colors and Brightness:

   - If needed, add an adjustment layer (`Layer` > `New Adjustment Layer`) such as `Hue/Saturation` or `Curves` to fine-tune the colors and brightness of the rainbow.

2. Enhance Realism:

   - Consider adding subtle reflections or light effects to enhance realism. For instance, use a low-opacity brush to add light reflections on water or other surfaces affected by the rainbow.

Step 9: Save Your Image

1. Save as PSD:

   - Go to `File` > `Save As` and save your work as a PSD file to keep all the layers intact for future editing.

2. Export the Final Image:

   - Go to `File` > `Export` > `Export As`.

   - Choose the desired format (JPEG, PNG) and adjust the quality settings.

   - Click `Export`.

By following these steps, you can create a realistic rainbow effect in your images using Photoshop 2024. This technique allows for flexibility and creativity, letting you adjust the rainbow to perfectly suit your image.

Other Method Detail:

Here’s the photo I’ll be starting with:

The original image.

Here’s what the image will look like after adding a double rainbow:

The final rainbow effect.

Step 1: Add A New Blank Layer

With the image newly opened in Photoshop, if we look in the Layers panel, we see that we currently have one layer, the Background layer, which contains our image:

The photo sits on the Background layer in the Layers panel.

The first thing we need to do is add a new blank layer above the Background layer. To do that, click on the New Layer icon at the bottom of the Layers panel:

Click on the New Layer icon.

Photoshop adds a new blank layer named "Layer 1" above the Background layer. Double-click directly on the name of the layer and change it to “Rainbow”, since we’ll be adding our initial rainbow to this layer. Press Enter (Win) /Return (Mac) when you’re done to accept the name change:

Rename the new layer “Rainbow”.

Step 2: Select The Rainbow Gradient

As I mentioned, Photoshop ships with a ready-made rainbow gradient for us to use. It’s not one of the gradients that Photoshop makes available to us by default, but all we need to do is load it in manually. To do that, select theGradient Tool from the Tools panel:

Select the Gradient Tool.

Then, with the Gradient Tool selected, click on the Gradient Picker in the Options Bar at the top of the screen:

Click on the Gradient Picker in the Options Bar.

This opens Photoshop’s Gradient Editor which shows us small thumbnails of the gradients we can choose from. By default, the rainbow gradient isn’t one of them, so let’s load it in. Click on the right-pointing arrow in the top right of the Gradient Editor:

Click on the small arrow.

A list of additional gradient sets appears. The one we want is Special Effects. Select it from the list:

Select the “Special Effects” gradients.

Photoshop will ask you if you want to replace the original gradients with the Special Effects gradients or simply append them to the bottom of the list. Click Append so you’ll still have the original gradients available, and the new Special Effects ones will be added below them:

Click “Append” to add the new “Special Effects” gradients in with the original gradients.

With the new Special Effects gradients added, the one we want – Russell’s Rainbow – is the last one at the bottom. If you have Photoshop’s Tool Tips enabled in the Preferences (they’re enabled by default), you’ll see the name “Russell’s Rainbow” appear when you hover your mouse over the gradient’s thumbnail. Click on the thumbnail to select the gradient, then click OK to exit out of the Gradient Editor:

Click on the “Russell’s Rainbow” thumbnail to select the gradient.

Step 3: Select “Radial Gradient” From The Options Bar

To make the rainbow gradient appear as an arc when we draw it, go back up to the Options Bar at the top of the screen and click on the Radial Gradient option:

Select “Radial” from the Options Bar.

Step 4: Drag Out A Rainbow With The Gradient Tool

To add the rainbow colors to the image, all we need to do is drag out a gradient. I want my rainbow to appear as if it’s touching the ground behind the group of trees on the left of my photo and then arching high above the larger tree on the right. To do that, I’ll position my mouse almost at the edge of the photo near the bottom right corner, in line horizontally with the bottom of the trees on the left. I’ll click on that spot to set the starting point for my gradient, and with my mouse button still held down, I’ll drag all the way across the image to a point just beyond the left of the trees. Holding my Shift key down as I drag will limit the direction I can drag in, making it easy to drag horizontally:

Dragging out a radial rainbow gradient from right to left in the image.

When you release your mouse button, Photoshop draws the rainbow gradient. It doesn’t look terribly realistic just yet, but it’s a start:

Photoshop draws the gradient when you release your mouse button.

Step 5: Change The Blend Mode Of The Rainbow Layer To “Screen”

Go up to the blend mode options in the top left of the Layers panel (it’s the drop-down box set to "Normal" by default) and change the blend mode of the Rainbow layer to Screen:

Change the blend mode of the rainbow layer to Screen.

The colors of the rainbow will now blend in better with the photo behind them:

The rainbow after changing its blend mode to Screen.

Step 6: Apply The Gaussian Blur Filter

Let’s blur the colors of the rainbow together so it looks more realistic. Go up to the Filter menu in the Menu Bar at the top of the screen, choose Blur, then choose Gaussian Blur:

Go to Filter > Blur > Gaussian Blur.

This opens Photoshop’s Gaussian Blur dialog box. Drag the Radius slider at the bottom of the dialog box towards the right to increase the amount of blurring being applied to the rainbow, keeping an eye on the image as you drag the slider so you can see a preview of what’s happening. Continue dragging the slider to the right until the transitions between the colors look more soft and natural. The actual Radius value you end up choosing will depend a lot on the size and resolution of your image. For me, a value of around 50 pixels works well. Click OK when you’re done to close out of the dialog box:

Drag the Radius slider to soften the color transitions in the rainbow.

Here’s my image after applying the Gaussian Blur filter:

The rainbow now looks more realistic after applying the Gaussian Blur filter.

Step 7: Add A Layer Mask

Click on the Layer Mask icon at the bottom of the Layers panel:

Click the Layer Mask icon.

Nothing will happen yet in the document window, but Photoshop adds a layer mask thumbnail to the right of the main preview thumbnail on the Rainbow layer. If you look closely, you’ll see a transparent highlight box appearing around the layer mask’s thumbnail. This tells us that the mask, not the layer itself, is selected:

The layer mask thumbnail tells us that a mask has been added.

Step 8: Choose The Black To Transparent Gradient

With the Gradient Tool still selected, right-click (Win) / Control-click (Mac) anywhere inside the document window to quickly access the gradient presets thumbnails, the same ones we saw a moment ago in the full Gradient Editor dialog box. Select the Black to Transparent gradient by clicking on its thumbnail (third from the left, top row). PressEnter (Win) / Return (Mac) when you’re done to close out of the gradient list:

Click on the Black to Transparent gradient’s thumbnail to select it.

Step 9: Choose “Linear Gradient” From The Options Bar

Go back up to the Options Bar and this time, click on the Linear Gradient option:

Click on the “Linear” gradient icon.

Step 10: Drag A Black To Transparent Gradient On The Layer Mask

A real rainbow would usually appear to get brighter as it reaches higher into the sky, so we’re going to give our Photoshopped rainbow that same effect by dragging a black to transparent gradient from the base of the rainbow (the point where the rainbow and the ground should meet) to the top of the image. To do that, with my Gradient Tool selected, I’ll click my mouse somewhere along the bottom of the trees on the left. Then, with my mouse button still held down, I’ll hold down my Shift key as well and drag straight up to the top of the image. Holding down Shift makes it easy to drag in a vertical direction:

Drag a black to transparent gradient from the base of the rainbow to the top of the image.

When I release my mouse button, Photoshop draws the black-to-transparent gradient. Since the gradient was drawn on the layer mask, not on the layer itself, we don’t see the actual gradient in the image. Instead, the rainbow now appears to start near the bottom of the trees on the left and gets brighter as it reaches higher into the sky:

The rainbow no longer extends all the way to the bottom of the photo thanks to the layer mask.

Step 11: Duplicate The Rainbow Layer To Increase Its Brightness

To increase the brightness of the rainbow, simply press Ctrl+J (Win) / Command+J (Mac) to duplicate the layer. If, after duplicating the layer, you find the rainbow is now too bright, dial it back a few notches by lowering the opacity of the duplicated layer. You’ll find the Opacity option directly across from the blend mode option at the top of the Layers panel. I’m going to lower mine down to around 70%:

Press “Ctrl+J” (Win) / “Command+J” (Mac) to duplicate the rainbow layer, then lower the new layer’s opacity as needed.

Here’s my image after duplicating my rainbow layer and then lowering the opacity:

The rainbow now appears brighter.

Step 12: Group The Two Rainbow Layers

Let’s do a little housekeeping in the Layers panel by grouping the two rainbow layers together. Grouping related layers makes it easier to keep the Layers panel organized. With the top layer selected, hold down your Shift key and click on the original Rainbow layer directly below it to select both layers at once. You’ll see them both highlighted in blue, letting you know they’re both selected:

Select both rainbow layers.

Then go up to the Layer menu at the top of the screen and choose Group Layers:

Go to Layer > Group Layers.

Photoshop will group the two layers together in the Layers panel. Photoshop names the new group "Group 1". By default, the layer group will be closed, preventing us from seeing the two layers inside of it, which is fine for now:

The two rainbow layers are now inside “Group 1″.

Step 13: Add A New Blank Layer

We have our initial rainbow. Now let’s add a second one to create a double rainbow effect! First, we’ll need a new layer, so click once again on the New Layer icon at the bottom of the Layers panel:

Add another new layer.

The new layer will appear above the layer group in the Layers panel. Double-click on the new layer’s name and change it to “Second rainbow”, then press Enter (Win) / Return (Mac) to accept the name change:

Rename the new layer “Second rainbow”.

Step 14: Re-Select The Rainbow Gradient

Click once again on the Gradient Picker in the Options Bar at the top of the screen:

The Gradient Picker is currently showing the black to transparent gradient.

When the Gradient Editor opens, click again on the Russell’s Rainbow thumbnail to select the rainbow gradient, but don’t close out of the Gradient Editor yet. We need to make some changes to it:

Re-select the Russell’s Rainbow gradient.

Step 15: Flip The Order Of The Colors In The Gradient

Whenever we see a double rainbow in nature, the colors in the second rainbow are always in reverse order, which means we need to reverse the order of the colors in our gradient. With the Gradient Editor still open, click on theblue color stop directly below the gradient preview bar and drag it towards the left. Then do the same thing with the green and yellow color stops, dragging them towards the left. It doesn’t matter how far you drag them as long as there’s some space between them. This is just to make sure they don’t overlap each other as we reposition them. Leave the red color stop in place:

Drag the blue, green and yellow color stops towards the left just to spread them out temporarily.

Click on the red color stop to select it, then enter a value of 82% into the Location option. This will place the red color stop in the same location that the blue color stop was in originally:

Click on the red color stop, then enter 82% for the Location.

Next, click on the yellow color stop to select it, then set its Location value to 85%. This moves yellow into the spot originally held by green:

Click on the yellow color stop, then enter 85% for the Location.

Click on the green color stop to select it, then set its Location value to 88%, which moves green into yellow’s original location:

Click on the green color stop, then enter 88% for the Location.

Finally, click on the blue color stop and change its Location value to 92%, placing it in red’s original spot:

Click on the blue color stop, then enter 92% for the Location.

Directly above the gradient preview bar are more stops, filled with transparent, black or some shade of gray. These stops control the transparency levels (opacity) of the colors throughout the gradient. Click on the light gray opacity stop(second from the left) to select it, then change its Opacity value from its original 20% to 0%. Click OK when you’re done to exit out of the Gradient Editor:

Click on the light gray stop above the gradient preview bar and change its Opacity value to 0%.

Step 16: Drag Out Another Rainbow Gradient

With the colors in the gradient now reversed, we’re ready to create our second rainbow. First, I’m going to hide my original rainbow from view temporarily by clicking on the layer group’s visibility icon (the eyeball) in the Layers panel:

Clicking on the visibility icon turns layers or layer groups on or off in the document.

Then I’ll drag out a rainbow gradient just as I did back in Step 4: First, I need to re-select the Radial Gradientoption in the Options Bar so the gradient will appear as an arc:

Select the Radial Gradient option again.

Then I’ll click and drag out my second rainbow in the same location as the first one:

Dragging out a second rainbow gradient in the same spot.

When I release my mouse button, Photoshop draws the gradient, looking very much like the first one except that this time, the order of the colors is reversed:

The second rainbow gradient with its colors reversed.

Step 17: Change The Blend Mode To Screen

Just as we did with the first rainbow, change the blend mode of the new rainbow from Normal to Screen:

Set the blend mode to Screen.

The colors of the rainbow now blend in better with the image:

The second rainbow set to the Screen blend mode.

Step 18: Apply The Gaussian Blur Filter

Since the Gaussian Blur filter was the last filter we applied, we can quickly re-apply it with the same settings by pressing Ctrl+F (Win) / Command+F (Mac). Just as before, the color transitions now appear softer and more natural:

The rainbow once again appears more realistic after blurring the colors.

Step 19: Copy The Layer Mask Onto The Second Rainbow Layer

We need to add a layer mask at this point and draw a black to transparent linear gradient on the mask to hide the the rainbow below the point where it should be touching the ground and have it appear to increase in brightness as it reaches further into the sky, just as we did back in Steps 7-10 with the original rainbow. But why go through all that hassle again when we can just copy one of the layer masks we’ve already created onto the second rainbow’s layer! To do that, I’ll first need to open my layer group by clicking on the small triangle to the left of the group’s name:

Click on the triangle to twirl open the layer group.

With the layer group open and the two layers that make up the original rainbow now visible, hold down your Alt(Win) / Option (Mac) key, click on the layer mask thumbnail for the “Rainbow copy” layer and drag it up to the second rainbow’s layer:

Hold down Alt (Win) / Option (Mac) and drag the layer mask thumbnail onto the top layer.

When you see a highlight bar appear around the second rainbow’s layer (shown in the previous thumbnail), release your mouse button. Photoshop copies the layer mask onto the second rainbow’s layer:

The layer mask has been copied from one layer to another.

If we look at the image in the document window, we see that the bottom of the rainbow now fades out just above the trees, just like the original rainbow:

The image after copying the layer mask to the second rainbow’s layer.

Step 20: Move The Second Rainbow Into Position

All that’s left to do now is to move the second rainbow into position. Select Photoshop’s Move Tool from the Tools panel, or press the letter V on your keyboard to quickly select it with the shortcut:

Select the Move Tool.

Before I move anything, I’ll turn the original rainbow back on in the document by clicking once again on the layer group’s visibility icon in the Layers panel:

When a layer or group is hidden, the eyeball in the visibility icon is also hidden.

Then, with the Move Tool selected and both rainbows now visible in the document, click inside the document window and, with your mouse button still held down, drag the second rainbow into place. I’m going to drag mine up and to the left so only a small part of it appears in the top left corner of the photo:

Use the Move Tool to drag the second rainbow into place in the image.

Step 21: Lower The Opacity Of The Second Rainbow

Finally, since I don’t want my second rainbow to appear as bright as the original, I’ll lower its opacity down to around 70% at the top of the Layers panel:

Lowering the opacity of the second rainbow.

And with that, we’re done! Here, after lowering the opacity, is my final Photoshop double rainbow effect:

The final rainbow effect.

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