The Importance of Straightening The Horizon and Aligning Lines

One of the most common mistakes I see when reviewing images submitted by our readers, or when reviewing portfolio images during our workshops, is a rather simple case of crooked horizons or badly aligned lines. Although most photographers are very well aware of this one, for some reason many simply fail to see such problems in their images. Now it is one thing when an image is tilted intentionally to create an interesting composition, and totally different when the photographer is not paying attention to or is unaware of the surroundings and background elements that are part of their photographs. In this article, I will demonstrate examples of crooked horizons and badly aligned lines, how they can be easily fixed in post-processing software like Lightroom, and talk about the importance of lines in composition.

1) Why Lines Are Important

Why are horizons and lines important in photographs? Because we as human beings generally prefer straight, leveled lines instead of odd angles. Think about it. When you hang a photo in your living room, why do you want to perfectly align it with the ceiling, your floor or your furniture? Why does your TV or your computer monitor stay on a flat surface or hung perfectly aligned on the wall? Why do we have so many objects with the right angle? That’s because we like things straight and if things looked crooked, it throws our sub-conscious perception out of balance. We seek visual balance in everything we do, including photography. That’s why looking at a photo with a crooked horizon does not feel natural. We have a built-in ruler in our brains that makes us want to tilt our heads to try to align those lines.

Therefore, it is always a good idea to pay close attention to your scene, its surroundings and backgrounds, not just your main subject. And this applies not just for landscape or architectural photography – I apply it for photographing people and wildlife as well, as demonstrated below. So in a way, it is a universal rule.

1.1) Portrait Photography Example

Take a look at the below bridal photograph. I opened the unprocessed RAW file, then drew red lines on top of the lines that needed to be fixed:

Straight Out of Camera: NIKON D750 + 20mm f/1.8 @ ISO 720, 1/40, f/5.6

While it is a nice photo, looking at the horizontal ceiling lines and the carpet, we can clearly see that the image is distorted and the lines running from left side of the frame to the right appear tilted. There was nothing I could do in my camera, because it was the combination of the lens focal length and its distortion properties that were distorting the lines and I did not want to change my or model’s position. After a couple of minutes in Lightroom, I was able to fix the tilted lines with a few clicks. Next, I gave a boost to colors and removed unwanted objects in the shot and I ended up with the following shot:

After Lightroom Adjustments: NIKON D750 + 20mm f/1.8 @ ISO 720, 1/40, f/5.6

Now the image looks much better and strikes a better visual balance. I lost a little bit of the image as a result of these corrections, but the lines now look straight and parallel, giving me a good balance of vertical and horizontal lines.

1.2) Landscape Photography Example

Let’s take a look at another image and this time we are dealing with a curvy and crooked horizon of a seascape. Again, the below shot is unprocessed RAW:

Straight Out of Camera: NIKON D800E + 18-35mm f/3.5-4.5 @ ISO 50, 15/1, f/8.0

Although I did my best to keep the horizon leveled, it is pretty clear that the horizon is not only tilted, but also appears a bit curvy thanks to the barrel distortion exhibited by the lens. Here is the same image with the fixed horizon after I made some adjustments

After Lightroom Adjustments: NIKON D800E + 18-35mm f/3.5-4.5 @ ISO 50, 15/1, f/8.0

Now that looks much better. If I had not straightened and aligned the horizon properly, the image would not have had the same balance as it does now, even without any color adjustments.

1.3) Architecture Photography Example

Here is an example of a glass building that shows tilted horizontal lines:

Tilted Lines: Canon EOS 6D + 50mm @ ISO 100, 1/1000, f/5.6

The image appears unnatural this way, because every horizontal line is impacted by the visible tilt. And here is the same image, with the properly aligned horizontal lines:

Properly Aligned Lines: Canon EOS 6D + 50mm @ ISO 100, 1/1000, f/5.6

Just a subtle change in tilt and the image now appears much more balanced.

2) How to Find and Align Lines / Visual Guides

There are situations, when it can be tricky to identify the horizon or the lines by which the scene needs to be adjusted / aligned. Sometimes those visual guides simply do not exist. What do you in such situations? If the image achieves good visual balance without any lines, then sometimes you do not have to worry about any of that. However, in many cases, visual guides are there, but they are hard to find and identify. Let’s go over some examples where such visual guides might not be immediately visible to your eyes

2.1) Engagement Session Example

In the below sample image of an engaged couple, we have multiple elements that form different lines – the fence and the kissing couple that are standing at an angle. We also have vertical trees and the hard to see horizon line in the background. Which do we use as visual guides?

NIKON D750 + Zeiss Distagon T* 2/35 ZF.2 @ ISO 50, 1/320, f/5.6

It should definitely not be the fence or the couple, as they are only one part of the overall landscape. So when I was framing this shot, I used the trees and the horizon as my visual guides, as shown in red:

NIKON D750 + Zeiss Distagon T* 2/35 ZF.2 @ ISO 50, 1/320, f/5.6

2.2) Landscape Example #1

Here is a sample image of a landscape that contains multiple elements, but has no clearly defined horizon line. Which elements would you pick for alignment?

NIKON D750 + 24-70mm f/2.8 @ ISO 100, 1/3, f/5.6

When framing this particular shot, I used the houses on the bottom of the frame, the trees on the left and the mountain line to properly align the image:

NIKON D750 + 24-70mm f/2.8 @ ISO 100, 1/3, f/5.6

2.3) Landscape Example #2

This shot is a tough example, because there are so many different lines in the scene that are heavily tilted:

NIKON D750 + 24-70mm f/2.8 @ ISO 100, 1/80, f/5.6

I used two elements in the scene as my visual guides – the mountain range in the back and the tree on the right side of the frame:

NIKON D750 + 24-70mm f/2.8 @ ISO 100, 1/80, f/5.6

2.4) Landscape Example #3

This is another tough one, because there are no clear lines in the frame. I have seen many photographers struggle with scenes like this and they have to lose portions of the frame when they align it properly later in the post. Which visual guides do we use here to properly align the scene in the viewfinder?

NIKON D750 + 24-70mm f/2.8 @ ISO 100, 6/10, f/8.0

I used the tree in the center of the frame, the peak of the mountain and the two hills on the sides of the frame as my visual guides. The heavy one here is obviously the hill line – if that appears too crooked, the whole scene will be thrown out of balance:

NIKON D750 + 24-70mm f/2.8 @ ISO 100, 6/10, f/8.0

2.5) Bridge Example

In the below example of a bridge, do we align the scene using the bridge or the horizon?

NIKON D800E + Zeiss Distagon T* 1.4/35 ZF.2 @ ISO 100, 13/10, f/16.0

The horizon, of course. Remember, always keep the horizon of your landscape as your main guide – everything else is part of the landscape, including the bridge. When composing this shot, I used several visual guides – the horizon and the wood sticking out of the water.

NIKON D800E + Zeiss Distagon T* 1.4/35 ZF.2 @ ISO 100, 13/10, f/16.0

2.6) Bridal Portrait Example #1

Let’s now jump to another portrait and this time we have a close-up of a bride:

NIKON D750 + 85mm f/1.4 @ ISO 110, 1/200, f/2.8

The main element is obviously the bride, but that does not mean that everything else in the background should be ignored. Here, I used the window on the back of the bride as my main visual guide for proper alignment:

NIKON D750 + 85mm f/1.4 @ ISO 110, 1/200, f/2.8

2.7) Bridal Portrait Example #2

Here is the last example of a portrait, with the bride on the lower left side of the frame that Lola captured with her nifty fifty:

NIKON D750 + 50mm f/1.8 @ ISO 100, 1/200, f/4.0

Here, the visual guides are pretty obvious – we have the wall separation and the white line on the background that serve as the proper visual guides.

NIKON D750 + 50mm f/1.8 @ ISO 100, 1/200, f/4.0

But the most important thing here is not the alignment itself, but how Lola was able to get the wall aligned straight down. She pre-visualized the shot and wanted the wall line to appear straight. To do that, she moved back far enough, so that there is little natural perspective distortion to deal with. If you want to straighten lines like this, you have to use the right combination of camera to subject distance and focal length. Another key factor sometimes is height – shooting anything upwards will usually result in perspective distortion. For this particular shot, Lola had to stand on an elevated surface and she was on her toes to keep the wall straight.

3) Aligning Lines in Camera

By now I showed you many different examples of what visual guides I use for alignment and proper visual balance. With the exception of the first image, pretty much every shot was composed as shown, in camera. The most important thing is to try to do this in your camera and not leave the task for post-processing. Why? Because if you frame your shot tight, alignment in post-processing might not be possible, as you might lose key parts of your composition elements. Slight adjustments are easy to deal with, but if your horizon is crooked heavily, you will lose quite a bit after the image is aligned and cropped.

My advice is to always pay attention to your framing and look for anything that might serve as your visual guide. Once you identify what the visual guide for alignment is, only then start framing your subject.

What really helps when doing this is to keep the viewfinder grid turned on in your camera. On mirrorless cameras, you can generally pick between different grids – rule of thirds, 9 or 24 grids, HD framing, etc. On my Fuji X-T1, I have 9 grids set up. If you have a Fuji camera, you can do that by going to SET-UP -> SCREEN SET-UP -> FRAMING GUIDELINE -> GRID 9. On my Nikon DSLRs, I always have my “Viewfinder grid display” option turned on. You can find it under CUSTOM SETTING MENU -> Shooting/display -> Viewfinder grid display.

Here is how the viewfinder looks like on the Nikon D810 with the grids turned on:

The lines that are running all over the viewfinder outside of the focus point area are the grids and they help quite a bit in properly framing your shots.

4) Aligning Images in Lightroom

The process of aligning images in Lightroom is super simple. All you have to do is go to the Develop Module, then click the “Crop Overlay” icon above the “Basic” sub-module. You can also press the “R” button on your keyboard to bring up the same window. Once the “Crop & Straighten” window expands, you will see an icon that looks like a ruler, with the word “Angle” in front of it:

Once you click on that icon, you will see that your mouse icon will now have a ruler on the bottom right side of it – this means that the ruler has been activated and you can now align your image. All you have to do from there is find either a vertical or a horizontal visual guide, click and hold your mouse on one side of it, then move to the end of the guide and release the mouse button. This will basically align your image to your visual guide / ruler. That’s really it!

Now if you want to fix perspective distortion as in the first image of this article, that process is more complex than simple alignment, so we will leave that topic for another tutorial.

5) Experiment and Break Rules

Keep in mind that the above are my suggestions to improve your composition – they are not strict rules that you always need to obey. Experiment with angles and lines and see what works for each photograph. Sometimes tilting horizons and lines in your shots can produce stunning results. Take a good look at some superb examples of using tilted lines by our team member Sharif / Alpha Whiskey Photography, who knows how to intentionally tilt the horizon and lines in images to create beautiful and engaging shots.

Hope you enjoyed this article. If you have any questions or feedback, please post them below in the comments section.

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