A photo that looks gorgeous on your monitor can look flat, dim, color-shifted, or blurry as a print. The print itself is not betraying you. The screen was lying. Screens are backlit, reflective surfaces are not. Screens use red, green, and blue light to produce color, prints use cyan, magenta, yellow, and black ink (or pigment) to absorb color. The two systems do not display the same colors, the same dynamic range, or the same tones. Preparing a photo for print is the work of translating between them honestly. This guide walks through the file decisions that matter (resolution, color space, sharpening, proofing) so that the print you order matches the image you intended.
Calibrate your monitor first
An uncalibrated monitor is the single most common cause of bad prints. Out of the box, most monitors are too blue, too bright, and contrasty in ways that make on-screen images look more punchy than they actually are. You edit to that punchy display, the print comes back looking flat and dark, and you blame the print lab. The print lab is innocent.
A hardware calibrator (a small puck you suction-cup to the screen, run for ten minutes, and let it build a custom display profile) solves this permanently. Calibrate at a white point of D65, a gamma of 2.2, and a brightness in the range of 100 to 120 cd/m squared if the print will be viewed indoors. A calibrated monitor is the single highest-leverage investment any print-aware photographer can make.
Resolution: pixels per printed inch
Print resolution is measured in pixels per inch (ppi). The general standard for high-quality photographic prints is 300 ppi. At 300 ppi, an 8 by 10 inch print needs 2400 by 3000 pixels of source image. A 16 by 20 inch print needs 4800 by 6000 pixels.
For very large prints viewed from a distance, you can drop to 200 ppi or even 180 ppi without visible quality loss. A poster you stand 10 feet from never needs 300 ppi at the surface. For small prints viewed in hand (10 by 12 inches and below) stay at 300 ppi. Some fine art labs and museums prefer 360 ppi at the printer’s native resolution.
Check your source image. Open it in Lightroom or Photoshop and look at the pixel dimensions. Divide by your target print size in inches. If the result is over 200 you are safe. If it is under 150 you will need to upscale, accept a smaller print size, or print on a textured paper that hides resolution issues.
Upscaling honestly
Modern resampling software (the upscale function built into Lightroom and Photoshop, plus dedicated tools like Topaz Gigapixel and ON1 Resize) can roughly double resolution before quality drops visibly. A 12 megapixel file can usually be pushed to a clean 16 by 20 inch print. A 6 megapixel file cannot honestly become a 40 inch print.
If you are upscaling, do it as the last step before sharpening. Upscale first, then apply output sharpening at the new larger size. Do not upscale a sharpened file. The artifacts compound.
Color spaces explained simply
A color space is the defined range of colors a system can represent. Common ones in photography:
- sRGB. The smallest and most universal. Every web browser, every default monitor, every smartphone displays sRGB correctly. Use it for anything that will be viewed online or sent to a consumer print lab.
- Adobe RGB. Larger than sRGB, especially in the greens and cyans. Use it when sending files to a pro print lab that explicitly supports it, when printing on inkjet paper that can reproduce those wider colors, or when the file might be re-edited later.
- ProPhoto RGB. Very wide, larger than most printers and monitors can actually display. Used internally by Lightroom for raw processing. Should be converted to a smaller space before sending out for print.
If you are unsure what your lab supports, ask. If they will not say, send sRGB. An sRGB file will never look catastrophically wrong. An Adobe RGB file sent to a lab that does not support Adobe RGB will print with desaturated, weird-looking colors as the lab software guesses at the conversion.
Color management and ICC profiles
An ICC profile is a small file that describes how a specific device (a monitor, a printer with a specific paper) reproduces color. Good print labs publish ICC profiles for their printers and papers. Download the profile for the exact paper you are ordering on, and use it for two things:
- Soft proof your image in Lightroom or Photoshop using the lab’s ICC profile. The screen simulates how the print will look on that paper and shows you any out-of-gamut colors before you commit.
- Convert the output file to the printer profile only if the lab specifies “we want profiled files.” More commonly the lab wants sRGB or Adobe RGB tagged files and they apply the printer profile on their end.
Read the lab’s instructions before assuming. Different labs want different inputs.
Soft proofing in detail
Soft proofing is the previewing of your image as it will print, using the printer’s ICC profile to simulate the paper’s color and dynamic range on your monitor. In Lightroom, turn on Soft Proofing in the Develop module, load the profile, and the image shifts to reflect what the print will look like.
You will usually see two things happen. First, the colors compress slightly. Some saturated reds or blues that looked vivid on screen come back muted. Second, the dynamic range compresses. The deepest shadows lift, the brightest highlights drop. This is what the print will look like. You can now make targeted edits to compensate: boost contrast slightly to recover the lost punch, brighten shadows that have flattened, add saturation to specific colors that need it. Save these print-specific edits as a separate virtual copy in Lightroom so they do not affect the screen version.
Output sharpening
Files for print need different sharpening than files for screen. The print process slightly softens detail, so output sharpening compensates by adding edge contrast that gets eaten by the print. Sharpen on the wrong side of this equation and you get crunchy halos. Sharpen too little and you get a flat print.
In Lightroom, the Export dialog has a Print Sharpening option with three strength settings (Low, Standard, High) and two paper types (Matte, Glossy). Pick the one that matches what you are printing on. Matte papers absorb more ink and benefit from stronger sharpening. Glossy papers reproduce edges more crisply and need less. Start with Standard and adjust based on what the first test print looks like.
If you are exporting from Photoshop, use a final Smart Sharpen pass on a copy of the image after it has been resized to the final print pixel dimensions. Sharpen the resized file, not the original. Do not save the sharpened file over your master.
Choosing a paper
Paper affects the print as much as the file. Three broad families:
- Glossy and lustre. Vivid colors, deeper blacks, more contrast. Reflective surface that can be distracting under direct light. Best for portraits, vivid landscapes, and prints that need maximum punch.
- Matte and fine art papers. Lower maximum black, lower color saturation, no reflection. Quieter feel. Best for black and white, soft portraits, fine art landscapes, anything where the print is meant to be lingered over.
- Specialty surfaces. Metallic papers (extreme highlight pop), canvas (texture, often stretched on a wood frame), baryta papers (the gold standard for high-end fine art with deep blacks and a slight gloss).
Order a small test print before committing to a large run. Most labs sell sample packs of their full paper lineup. A 5 by 7 of the same image on six different papers tells you more in five minutes than any amount of online research.
File format and compression
Export the final print file as 16-bit TIFF if the lab accepts it. TIFF is lossless, supports color profiles, and keeps every bit of color depth your editing built up. Some labs only accept JPEG. If so, export as quality 100 (or 12 in Photoshop), embed the color profile, and let the lab handle the rest.
Set the output resolution to match the print size at 300 ppi. Strip private metadata (camera serial number, GPS coordinates) before uploading to a lab unless you specifically want them included. Most labs ignore metadata, but stripping protects your privacy.
Common mistakes
- Editing on a too-bright monitor. If you edit on a screen that runs at 200 cd/m squared, your prints will come back too dark. Calibrate at 100 to 120 cd/m squared for indoor viewing.
- Sending an Adobe RGB file to an sRGB-only lab. Colors come back desaturated. Always confirm color space requirements.
- Forgetting to embed the color profile. The lab has no idea how to interpret the colors. Always check “Embed Color Profile” in the export dialog.
- Sharpening the master file. Output sharpening is destructive at the output size. Apply it on a copy, not the original.
- Trusting the screen for shadow detail. Screen shadows look deep and rich. Print shadows can plug to black. Soft proof and lift shadows specifically for the print version.
- Ordering a huge print before testing. A 5 by 7 test print costs almost nothing and tells you exactly what the larger version will look like.
- Editing in a bright room. Your eyes adapt to the surroundings. Edit in dim, neutral light if you can.
Try this: a ten-minute print prep workflow
Pick one of your best recent images. Open it in Lightroom. Make a virtual copy so the original is untouched. Turn on Soft Proofing and load the ICC profile from the lab where you would print it (if you do not have one, use a generic sRGB profile as a stand-in). Notice what shifts: which colors dulled, which areas of the image flattened. Make corrections only to the virtual copy: lift shadows that went black, boost contrast that went flat, add targeted saturation where needed. Now export this virtual copy as a 16-bit TIFF at the exact pixel dimensions for an 8 by 10 print at 300 ppi (so 2400 by 3000 pixels) with the color profile embedded, output sharpening on Standard for the paper type you would use. Open the exported file in any image viewer. You now have a print-ready file. Send it to a lab next time you order, and compare the print to the soft proof. The closer they match, the better your workflow.
Frequently asked questions
Why does my print look darker than my screen?
Almost always because the monitor is too bright. Calibrate it to a brightness in the 100 to 120 cd/m squared range. The screen will look dimmer at first. Your prints will start matching.
Do I need to convert to CMYK?
Not for most photographic printing. Photo labs and inkjet printers handle the conversion from RGB internally. CMYK conversion is required for commercial offset printing (magazine and book interiors). For prints, leave the file in RGB.
Should I sharpen for print in Lightroom or Photoshop?
Either works. Lightroom’s Export Print Sharpening is fast and surprisingly good. Photoshop gives more control if you want to brush sharpening selectively. Both want to be applied at the final output size, after any upscaling.
What about printing black and white?
Convert to greyscale only as the final export step, not earlier in the workflow. Many printers do better with a color file that happens to have desaturated colors than with a pure greyscale file. Some pro labs offer a dedicated black and white printing process that uses only black inks of varying density. Ask the lab what they prefer.
How do I handle white borders?
Either build the border into the file (add white space around the image at the size you want) or let the lab add it as part of their print options. Building it in gives you exact control. Letting the lab handle it is faster.
What lab should I use?
Test the labs in your region. Color science, paper quality, and customer service vary widely. Order the same test image from three or four labs at the same print size on the same paper type, on the same day. Compare side by side under neutral light. Pick the one whose prints you like best, and stay with them.
Keep learning
Print prep sits at the end of a much larger color-management workflow. The supporting fundamentals (color management, color space, soft proofing, white balance) all decide what your printable file looks like. The Intermediate Photography course covers editing workflow in depth. Browse the Browse Topics hub for related guides and the glossary for any unfamiliar terms.