Black-and-white photo of a curly-haired woman in a fitted top and heels, leaning back against a wall with one leg extended along the floor, dramatically lit against a dark marble backdrop, illustrating how to create a black-and-white image in Photoshop.
  • Creating A Black and White Image In Photoshop pt2

  • Aaron Nace
    by Aaron Nace
    February 21, 2014
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Part two of this free black and white series starts with the question of whether an image should be in black and white at all, then gets into the Photoshop work. A Curves adjustment clips the shadows and highlights for contrast, with the black point raised to a stylized gray instead of pure black. A duplicated channel becomes a precise brightness-based selection for dodging fine highlights, and a stretched radial gradient adds a natural-looking light leak.

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Creating a Black and White Image in Photoshop, Part 2

Deciding whether an image should stay in black and white is just as important as knowing how to convert it. This tutorial covers when black and white works and when it doesn’t, then moves into Photoshop for high-contrast Curves adjustments with a gray black point, channel-based selections for local dodging, and a natural-looking light leak effect.

Deciding When Black and White Actually Fits an Image

Black and white tends to favor natural, emotional images far more than bold, highly stylized ones.

  1. Consider the Image’s Overall Style

    Look at whether an image relies on vivid, saturated color to create a bold, in-your-face effect, since that kind of image usually loses its impact once converted to black and white.

  2. Favor Black and White for Natural, Emotional Images

    Reach for black and white on images that already lean toward a natural, emotional feeling rather than an intentionally hyper-stylized, colorful look.

Why a Highly Stylized, Colorful Image Rarely Works in Black and White

An image built around dramatic use of color, like a bright red curtain used specifically to draw the eye, loses that entire visual strategy the moment the color is removed. Black and white simply isn’t the right style for an image whose whole point depended on vivid, saturated color in the first place.

Using Selective Color as an Occasional Technique

Leaving one small area in color while the rest of the image goes black and white is a technique worth knowing, even if it’s rarely the right choice.

  1. Reserve Selective Color for a Specific Purpose

    Keep selective color, such as a single red object left in color against an otherwise black-and-white image, as a tool for a specific comedic or dramatic effect rather than a default style choice.

Creating High Contrast With a Non-Black Black Point

Adjusting Curves on an already-desaturated image gives far more control over contrast than a simple desaturate alone.

  1. Desaturate the Image

    Press Shift+Cmd/Ctrl+U to desaturate the image as a starting point.

  2. Add a Curves Adjustment Layer

    Add a Curves adjustment layer above the desaturated image.

  3. Clip the Shadows and Highlights for Contrast

    Drag the curve’s left input point to the right to clip shadow detail to black, and drag the right input point to the left to clip highlight detail to white, increasing overall contrast.

  4. Raise the Black Point to Gray Instead of Black

    After dragging the shadow point to the right, drag it up partway as well, so the clipped shadows become a stylized gray rather than pure black. The white point works the same way: drag it down a little for a flatter look.

Why Clipping the Black Point to Gray Creates a Distinct Look

Clipping shadow detail normally sends it straight to pure black, but raising that same clip point only partway sends it to a flat gray instead, which reads as an intentional, stylized choice rather than lost detail. This is a curve shape most people haven’t seen used this way, which is exactly what gives an image treated like this its distinct look.

Creating Local Selections With Channels

Because a black-and-white image has no real color difference between its channels, any one of them can be used to build a precise selection based purely on brightness.

  1. Duplicate a Color Channel

    Open the Channels panel, choose any channel since they’re now identical in a black-and-white image, and duplicate it.

  2. Adjust Levels on the Duplicated Channel

    Press Cmd/Ctrl+L to open Levels on the duplicated channel and adjust it so only the specific brighter areas you want to target remain visible.

  3. Load the Channel as a Selection

    Cmd/Ctrl-click the duplicated channel’s thumbnail to load it as a selection based on those brighter areas.

  4. Paint White on a New Layer Within the Selection

    Create a new layer, and with the channel-based selection active, paint white with a brush to brighten just those specific highlighted areas, such as strands of hair or the edge of a leg.

Why Channel-Based Selections Give Finer Local Control

A brightness-based selection built from a duplicated channel targets exactly the areas that are already lighter in the image, rather than a rough hand-drawn selection that might miss fine details like individual strands of hair. That precision makes it possible to brighten very small, specific highlights, like the top of a cheek or the edge of a limb, without affecting anything around them.

Adding a Natural-Looking Light Leak

Black and white removes the need to worry about color entirely, which makes it an easy place to experiment freely with a light leak effect.

  1. Add a Curves Layer and Raise the Black Point

    Add a Curves adjustment layer and raise the black point to brighten the shadows.

  2. Invert the Mask and Add a Foreground-to-Transparent Gradient

    Press Cmd/Ctrl+I to invert the mask, then choose the radial Foreground to Transparent gradient with white as the foreground color.

  3. Drag the Gradient From an Edge or Corner

    Click and drag the gradient in from an edge or corner of the frame, ideally from the same direction real light would be entering the scene.

  4. Stretch the Gradient for a Streak Shape

    Press Cmd/Ctrl+T on the gradient and stretch it to create an elongated streak instead of a perfectly round leak, positioning it near the subject for extra interest.

Why This Approach Works

Knowing when black and white doesn’t fit an image is just as valuable as knowing how to create it, since forcing a bold, color-driven image into grayscale usually loses whatever made it work in the first place. Raising the black point to gray rather than pure black, and building selections directly from a duplicated channel, both go well beyond what a simple desaturate command can offer. Saving the light leak for a black-and-white image specifically takes advantage of not having to worry about color at all, making it a genuinely low-risk place to experiment.

Final Thoughts

Between clipping shadows to a stylized gray, using channels to build precise brightness-based selections, and finishing with a natural-feeling light leak, there’s a lot more control available in a black-and-white conversion than a single desaturate click reveals. The bigger lesson, though, is knowing which images actually benefit from losing their color in the first place, since not every photo is better off in black and white.

Quick Reference: Keys, Menus and Settings

  • Quick convertShift + Cmd/Ctrl + U to desaturate
  • High contrastCurves: black point right, white point left
  • Gray blacksThen drag the black point up partway; white point down for a flatter look
  • Channel selectionDuplicate a channel, Cmd/Ctrl + L for Levels, Cmd/Ctrl-click the copy to load it
  • Brighten detailsNew layer, paint white in the selection; Cmd/Ctrl + H hides the edges
  • Light leakCurves with the black point raised, Cmd/Ctrl + I, white Foreground to Transparent radial gradient; Cmd/Ctrl + T to stretch

No AI, no generative credits.

Black and White, Part 2: Common Questions

When should a photo stay in color instead of black and white?

When the image depends on bold color. Aaron’s example uses red curtains to pull the eye in a stylized scene, and in black and white it loses what it was going for. Black and white suits natural, emotional photos.

Is selective color a good idea?

Use it sparingly. Leaving one thing, like a red rose, in color can work for comedy or to point at one place, as in Schindler’s List, but Aaron rarely likes it.

How is the image converted in this part?

With a quick Shift + Cmd/Ctrl + U to desaturate. Curves and channels then give the control over lights and darks that Desaturate alone doesn’t.

How do I make black and white high contrast with Curves?

Drag the bottom-left point to the right to send the darkest tones to black, and the top-right point to the left to send the lightest to white.

How do I get gray blacks instead of pure black?

After moving the black point right, drag it up partway. The clipped shadows turn a flat gray. Dragging the white point down does the same to the highlights for a flatter look.

Why use a channel to make a selection in black and white?

In a black and white image the red, green and blue channels are the same, so any one is a map of brightness. Duplicate it, press Cmd/Ctrl + L and adjust Levels so only the areas you want stay light.

How do I brighten just the selected details?

Cmd/Ctrl-click the channel copy to load it as a selection, go back to Layers, make a new layer and paint white. Press Cmd/Ctrl + H to hide the selection edges while you paint the hair, legs or face.

How do I add a light leak?

Add a Curves layer with the black point raised, then press Cmd/Ctrl + I on its mask. Drag a white, Foreground to Transparent radial gradient in from the side the light comes from.

How do I turn the light leak into a streak?

Make a small gradient point, press Cmd/Ctrl + T and stretch it. Aaron places it near the subject for a bit of extra interest.

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