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Editing Your Photos According to the Histogram

Chris Gampat
No Comments
04/12/2016
4 Mins read

Histogram tutorial image

When photographers generally shoot, they generally become satisfied simply by chimping the LCD screen of the camera and falling in love with the image they just created. But when you send it to the web, not everyone gets the same viewing experience that you have. Monitor calibration aside, there are ways that you can ensure that your images have a more uniform performance across the board–and that’s by working with Histograms.

How, you ask? Well, it’s about making readings and combining those interpretations with your own best judgement.

Why Use the Histogram?

Screen Shot 2016-04-06 at 4.16.44 PM

There are a number of reasons that are very good in terms of why you should use the histogram when you may instead just opt for eyeballing an image, saying that it looks good, and going on with your life.

For starters, it has partially to do with displays. The way that a display works (such as a computer screen, a phone, tablet, etc) is that it adjusts based on what you set it to. Your settings vary based on the environment around you. My office may be lit differently than your office, home, etc. So in my apartment, you’ll get one viewing experience and at your apartment the same image will look different.

Generally this can’t be fixed because most people don’t have a clue as to how to calibrate their monitors and many folks just generally don’t do it. So to that end, monitors aren’t giving the same viewing experiences everywhere you go.

To that end, the steps that you can take to guestimate what the best generic viewing responses will be has to do with using Histograms. These charts give specific readings based on the image in front of you: so even though it may appear super dark on your monitor(s) it may not actually be so if you read the histogram.

What Does the Histogram’s Readings Mean?

Screen Shot 2016-04-06 at 4.17.19 PM

Good editing and histograms start with shooting them to begin with. The image that we’re working with and that you’ll see later will show you exactly what happens when images are edited accordingly.

Here’s the basics:

  • The left skews towards the shadows
  • The right skews towards the highlights
  • The middle is the balanced midtones.

Essentially what you want to get for a more uniform viewing experience is something that is very balanced all around. Of course, this also varies based on your own creative vision and whether you like the look of a super dark image or a super bright one. But keep all of this in mind as you edit.

The Histogram above shows lots of information in the middle, not too much in the shadows and a fair amount in the highlights. It’s overall not a bad spot to be.

Screen Shot 2016-04-06 at 4.16.44 PM

In comparison, this histogram was edited to be more balanced. There are more even levels all around in the highlights, shadows and the midtones.

Screen Shot 2016-04-06 at 4.17.01 PM

This histogram shows a lot of information in the shadows, some in the highlights and very little in the middle ground.

Screen Shot 2016-04-06 at 4.17.08 PM

In contrast, this one shows a lot of information skewing towards the highlights and some in the middle. There is almost nothing in the shadows.

The Importance of Editing Accordingly and How to Do It

Chris Gampat The Phoblographer Histograms 1 (1 of 1)ISO 4001-100 sec at f - 2.8

Here’s the original image that we’re working with here. Now let’s look at it in an editing interface.

Screen Shot 2016-04-06 at 4.13.52 PM

The histogram reading says that there is a lot in the shadows, some in the highlights and almost no midtones. That seems about right, so the plan of attack is to edit. When you change exposure levels, white balances, color channel levels, contrast, black levels, white levels, clarity and tint you generally tend to manipulate the histogram. By reading the color levels accordingly you can get a general idea of how the image will look on various monitors.

Screen Shot 2016-04-06 at 4.15.48 PM

Just a little bit of editing (actually, a lot, because I tend to do that) yields me an overall more evenly spaced image. But the red areas of the image show us that those areas are way too bright. If there were blue areas, then that would mean that those areas are too dark.

To adjust this, I just need to nerf the highlights; if I lower the overall exposure, then I nerf everything when instead all that needs to be changed is the highlights.

Screen Shot 2016-04-06 at 4.16.03 PM

With that change put into place, I deliver a much more even photo overall.

Chris Gampat The Phoblographer Histograms  edited (1 of 1)ISO 4001-100 sec at f - 2.8

According to the histograms, this is the image that will appear best overall on various monitors. A lot of this has to do with paying attention to not only the shadows, highlights, blacks, whites, overall exposure, white balance, tint, midtones, and the color channels–but also requires careful overall thought based on the image that you’re trying to put forward and a guess at the environment the person is viewing your image in. If you’re creating an image for a person whose computer is very bright and in a dark room, then you may want to skew a bit more towards the darker end if the person’s monitor isn’t calibrated. If your client is viewing the images on a phone, then you’ll generally have less trouble overall since phone screens tend to be very uniform accordingly.

Let us know if you have any questions!

colors highlights histogram image monitor shadows
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Chris Gampat

Chris Gampat is the Editor in Chief, Founder, and Publisher of the Phoblographer. He provides oversight to all of the daily tasks, including editorial, administrative, and advertising work. Chris's editorial work includes not only editing and scheduling articles but also writing them himself. He's the author of various product guides, educational pieces, product reviews, and interviews with photographers. He's fascinated by how photographers create, considering the fact that he's legally blind./ HIGHLIGHTS: Chris used to work in Men's lifestyle and tech. He's a veteran technology writer, editor, and reviewer with more than 15 years experience. He's also a Photographer that has had his share of bylines and viral projects like "Secret Order of the Slice." PAST BYLINES: Gear Patrol, PC Mag, Geek.com, Digital Photo Pro, Resource Magazine, Yahoo! News, Yahoo! Finance, IGN, PDN, and others. EXPERIENCE: Chris Gampat began working in tech and art journalism both in 2008. He started at PCMag, Magnum Photos, and Geek.com. He founded the Phoblographer in 2009 after working at places like PDN and Photography Bay. He left his day job as the Social Media Content Developer at B&H Photo in the early 2010s. Since then, he's evolved as a publisher using AI ethically, coming up with ethical ways to bring in affiliate income, and preaching the word of diversity in the photo industry. His background and work has spread to non-profits like American Photographic Arts where he's done work to get photographers various benefits. His skills are in SEO, app development, content planning, ethics management, photography, Wordpress, and other things. EDUCATION: Chris graduated Magna Cum Laude from Adelphi University with a degree in Communications in Journalism in 2009. Since then, he's learned and adapted to various things in the fields of social media, SEO, app development, e-commerce development, HTML, etc. FAVORITE SUBJECT TO PHOTOGRAPH: Chris enjoys creating conceptual work that makes people stare at his photos. But he doesn't get to do much of this because of the high demand of photography content. / BEST PHOTOGRAPHY TIP: Don't do it in post-production when you can do it in-camera.
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