How to Use Luminar Neo Sky AI for Realistic Sky Replacement

Replacing a dull sky is one of the most popular editing tasks, whether you’re enhancing your vacation pics or working as a professional photographer.

Like any compositing workflow, changing a sky requires advanced skills and a great deal of time and patience when done manually.

Thankfully, AI has come to our aid. Sky AI in Luminar Neo offers the perfect balance between ease of use and professional-quality results.

In this article, I’ll show you how to stay in control of your image while letting AI handle the heavy lifting.

We’ll explore each tool inside the Sky AI adjustments, walk through a practical step-by-step example, and share best-practice tips to help you achieve better results.

If you’re ready to improve your workflow using Sky AI, let’s dive in!

Who Can Benefit from Luminar Neo’s Sky AI Tool?

Replacing a sky in a photo isn’t just about fixing an exposure mistake – although it can be.

In reality, there are plenty of situations where a wide range of users may need to replace a sky. The problem is that using traditional photo editors can be time-consuming and technically demanding.

It often requires advanced masking and blending techniques that not every photographer or content creator has.

When you can’t reschedule a shoot and the weather doesn’t cooperate, a sky replacement becomes essential.

Whether you’re a tourist on a once-in-a-lifetime visit to a famous landmark or a professional photographer stuck shooting on an overcast day, Luminar Neo can help rescue your images with a powerful AI-driven tool.

If you want to add drama, enhance the atmosphere, or match a specific mood for storytelling purposes, Neo’s Sky AI tool is for you.

To sum up, who can benefit from Neo’s Sky AI? Here are a few examples.

• Wedding photographers who, like the bride and groom, face a challenge when the weather takes a turn for the worse on the big day.
• Portrait photographers shooting outdoors who can’t wait for the perfect weather to have a photoshoot.
• Real estate photographers who need a beautiful backdrop for their listing.
• Content creators who need scroll-stopping photos for social media.
• Beginners and hobbyists looking for a more appealing photo of their vacation or party.
• Busy professionals who can’t spend hours masking every tree and house in the picture.
• Creatives who need a specific ambience for storytelling reasons.

Aside from Sky AI, Neo also offers a whole range of impressive AI-powered editing tools. Check out our full review of the software here to learn more.

How to Use the Luminar Neo’s Sky AI Tool

The Sky Replacement tool in Luminar Neo is designed to do all the heavy lifting for you. However, it gives you plenty of tools to fine-tune and perfect the effect so it looks exactly the way you want.

So, let’s see which adjustments are available and how to use them. This will allow you to understand the tool, and you’ll be able to apply it to any picture you want.

Let’s start by saying that, like most tools in Neo, Sky Replacement has an Adjustment tab and a Masking tab. This tool will automatically create a mask, so I usually just make the adjustments and only work manually in the Masking tab if necessary.

Here’s what you’ll find on the Adjustments tab.

Sky Selection

As soon as you open the Sky AI tool, you’ll see thumbnails of skies. These aren’t random images; the AI has already analyzed your photo and selected the ones most compatible with it.

If you want to browse more options, click on the Sky Selection button. This will open a menu with all the skies you have available, including the free presets, any sky packages you’ve bought from the marketplace, and your own.

Simply click on any sky to see it applied to your photo.

Sky Orientation

There are two main things to consider when you’re compositing a new sky into a scene: the horizon and the light.

In this section, you’ll find a Horizon Position slider that allows you to move the horizon of the new sky up or down so that it properly aligns with the one on your photo.

You’ll also find Horizontal and Vertical Position sliders that shift the sky to place the clouds and sun where they make more sense in the composition.

Remember that while AI does all these things automatically, you can still adjust them – that’s what these sliders are for.

Lastly, you’ll find a Flip option to use when the light direction is opposite in both images. This is key to achieving a realistic effect.

Mask Refinement

While Luminar Neo’s AI does an impressive job of detecting the boundary between sky and foreground, there can be tricky situations where you need to perfect it.

Even without entering the Masking tab, you can still fine-tune the mask created by Sky AI so that there aren’t any visible giveaways on the edges between the new sky and the original scene.

A good way to start is to use the Global slider, which controls overall blending.

Then, use the Close Gaps slider to mask tricky areas such as the space between leaves or railings.

Finally, use Fix Details to restore minor details that might have been lost with the original mask.

The idea of this section is to use all three sliders to balance accuracy and realism.

If there are still areas that aren’t perfect, go to the Masking tab and use the brush or any other tool you think will help you achieve the perfect result.

Scene Relighting

A detailed mask is not the only thing you need to create a realistic composite – you also need the lighting of the scene to match the new sky. The adjustments in this panel will help you to achieve this.

Use Relight Strength to adjust the overall exposure of the original scene, and Relight Saturation to adjust the color temperature.

These two sliders are helpful on any photo where you’re replacing the sky.

If you’re working on a portrait, Luminar includes an extra slider called Relight Human.

This feature ensures people stay properly lit, and their skin tones look natural.

Find out more about using Neo’s Light Depth Tool here.

Reflection

This panel isn’t always used because it’s only necessary when there’s a body of water in your picture.

If this is the case, the Reflection Amount slider adjusts how strongly the new sky appears in the water.

Then, the Water Blur adds a softening effect to the reflection, simulating the natural motion blur of real water.

Sky Adjustment

Now it’s time to make some final retouching to the new sky.

If the original photo has a blurred background, you’ll need to apply some Defocus to the sky to match the depth of field.

Then, you can use the Grain slider to match the texture of your photo if it has noise or film grain from a scanned image.

Atmospheric Haze is common in landscape photography when moisture is in the air or environmental pollution is present. Using this slider, you can match the new sky to these natural conditions.

Warmth is the slider that controls the color temperature. You can achieve cooler tones for more overcast skies and warmer tones for the golden hour.

Finally, Brightness lets you fine-tune the overall lightness of the sky. This will help you balance the original light in the foreground with the new sky.

How to Replace a Sky in Luminar Neo – Step-by-Step

The first thing you need to do is to download Luminar Neo and install it on your computer.

(You can save 15% by using code SHOTKIT15 at checkout.)

Step 1

As you probably know, you need to import your images into Luminar Neo before you can edit them. When you do this, they’re placed in the Catalog, where you can later manage them into folders and collections.

Once you’ve imported the image you want to replace the sky in, select it and click the Edits tab at the top of the screen. This will open the photo in the Edit workspace.

Step 2

Once you’re in the Edit workspace, you’ll find the multiple tools available on the right side of the screen. Navigate the panels until you find the Sky AI tool, then click it.

You’ll typically find Sky AI under the Favorite tools at the top of the panel. If it’s not there, scroll down to the Creative section to find it.

Step 3

The first thing you’re presented with when you open the Sky AI tool is the suggested skies. This selection might show skies that you don’t currently have, but you can purchase them in the marketplace.

If you’re not convinced by the suggestions or you want to see your entire collection, click on the Sky Selection button to open the menu. Here, you can open a specific category or browse them all.

At the end of the library, you’ll find an option with a big Plus icon. Click it to open a new browser window and upload your own photos of the sky if you have them.

Any sky you import will remain available in the future under the Custom category.

Sky AI will do its best to match the color and exposure of the sky and the original image, and you’ll have tools to adjust this as well. However, remember that starting with a good sky selection that is coherent with your scene is key to a realistic result.

Step 4

Selecting a sky automatically generates a mask and displays the new sky on your image. Sky AI also adjusts the lighting and color so that the effect is stunning right from the get-go.

However, you might want to fine-tune the mask in particularly tricky areas or simply take creative control to achieve a slightly different result.

All of this is easy to do by using the sliders in the Adjustments section. The specifics of these will change every time, so feel free to experiment. You can always reset a slider or the entire Sky AI mask and start again if you’re not happy.

You’ll also find the Masking tool in this panel, with all the usual options, from the Brush to the Gradient to the AI Mask.

You can use this if the edges between the sky and the foreground are particularly tricky and the automatic masking needs some adjustments.

• Learn how to replace objects using Luminar Neo’s Genswap

Sky AI Tips & Tricks

Sky AI does an amazing job all on its own. Plus, you have plenty of easy-to-use controls that let you fine-tune the effect.

The best thing to do is experiment with different images and move the sliders to see what they do. Remember, you just have to double-click them to reset them.

Plus, Sky AI is a non-destructive edit. This means that you can always delete the entire effect from the Edits tab and start over if necessary. So, don’t be afraid to use this tool until you master it.

Here are some extra tips to help you hit the ground running.

• Choose the right sky. Even with all the features available, matching the right sky to the scene is key to achieving a realistic result.
• Import your own skies. Don’t just rely on the presets available in Luminar Neo or the Skylum marketplace. Instead, go out with your camera every time you see an interesting sky and build a personal library. This will ensure your images are unique.
• Make use of the masking tool. Even if Sky AI does a great job at masking, you might need to add or remove areas. You can do this using any of the Masking tools available, which range from the traditional Brush, Gradient, and Radiant tools to the more advanced Color and Luminosity masks and some AI features.
• Follow the image requirements recommended by Skylum. The higher the resolution, the better the result you’ll get. However, the minimum resolution required is 1,200 pixels on the shorter side. For optimal performance, it’s recommended that you keep your images under 10MB. Use a JPEG file if you need to keep the size small, and set the quality between 65 and 80 to avoid losing too much detail.
• Don’t be afraid to use other tools. After using Sky AI, you can keep editing your photos and use other tools to refine your creative vision and achieve the results you want.