Photo print quality: the 5 criteria that (really) make the difference

You’ve spent time choosing your best photos – the ones that deserve to be framed, given as gifts, or hung somewhere where they’ll really be seen. And yet, once you’ve got the print in your hands, something’s not quite right. The colours are dull, the details are lost, and the overall result is disappointing.

This sort of mishap happens more often than you’d think, and the cause is almost never the photo itself. It stems from technical settings that aren’t visible on screen but inevitably show up on paper.

Resolution, ink quality, choice of paper, colourimetry… these are all factors that seem abstract until the day you receive a botched print. At AgfaPhoto Print, these factors are at the heart of every order. Because a beautiful photograph deserves a print that does it justice.

Resolution and file format: the invisible foundations of a beautiful print

Even before we talk about paper or inks, there is a technical reality that you cannot see on screen but which determines everything else. The resolution of your file is the starting point. All too often overlooked, it alone accounts for a large proportion of disappointments when printing. A few basic concepts are enough to understand why, and above all, to avoid them.

For printing, is 72 or 300 dpi better?

Dpi, or ‘dots per inch’, measures the density of detail contained in an image. The higher this figure, the more precise and sharp the result will be on the final medium.

72 dpi is the standard for screens. It’s sufficient for displaying a clear image on a mobile phone or computer, but completely inadequate for printing. On paper, this resolution results in a blurry print, sometimes even pixelated at the edges.

300 dpi, on the other hand, is the universal benchmark in the world of photo printing. At this resolution, the human eye can no longer distinguish individual dots. The print appears sharp, details are preserved and colour transitions are smooth. This is the threshold below which you start to take risks.

If your photo is at 72 dpi and you want to print it, simply changing the value in software is not enough. What really matters is the total number of pixels in the image, not just the value displayed in the file properties.

300 dpi or 600 dpi – which is better?

The answer is simpler than you might think. In theory, 600 dpi offers twice the resolution. In practice, the difference is virtually invisible to the naked eye on most photo prints.

As mentioned earlier, 300 dpi remains the professional standard for a very good reason. It reaches the threshold beyond which the human eye can no longer distinguish additional detail. Increasing the resolution to 600 dpi only provides a noticeable improvement in very specific cases – such as a large-format print viewed at very close range, or certain specialised technical applications.

For the vast majority of photo prints, posters or photo books, aiming for 300 dpi is not only sufficient but recommended. Unnecessarily pushing the resolution up to 600 dpi makes the file considerably larger. This also complicates online submission and may even slow down order processing without bringing any visible benefit to the final result.

Is 50 megapixels enough?

A 50-megapixel sensor produces very high-definition images. In figures, this equates to approximately 8,700 x 5,800 pixels, depending on the sensor’s aspect ratio. This is more than enough to print very large formats whilst maintaining perfect quality, well beyond an A1 poster (59.4 x 84.1 cm)

But beware of a common misconception. The megapixels of a camera sensor and the DPI of a print are two distinct concepts. Megapixels measure the amount of information captured. DPI measures how this information is reproduced on a physical medium. A 50-megapixel file will give you great flexibility regarding print size. However, it is always the combination of pixel size and the chosen format that determines the final quality.

For a standard 10 x 15 cm photo print, a few megapixels are more than enough. For an 80x120 cm poster, you’ll be glad to have a file with plenty of pixels.

What happens when your resolution is too low?

A resolution that’s too low leaves nothing to the imagination when printed. Whilst a screen smooths out imperfections thanks to its backlighting, paper reveals everything. Outlines become blurred. Solid-colour areas reveal unsightly blocks, and fine details disappear completely.

The problem often stems from files downloaded from social media or shared via messaging apps. These platforms automatically compress images to reduce the load on their servers, sometimes without the user realising it. A photo that looks perfectly sharp on Instagram may have lost a large portion of its data – and therefore its ability to be printed in large format.

The best practice is always to go back to the original file – the one straight from the camera or smartphone, before any compression or sharing – as this is the file that contains all the captured pixels, and it is this file that will produce the best results on paper.

Paper, inks and colour gamut: what low-cost printers don’t tell you

The file resolution is your part of the job. But once the file has been sent, the printer takes over. And this is where the differences in quality between service providers become glaringly obvious: the paper used, the quality of the inks, and the ability to reproduce colours faithfully. These are criteria you won’t see on a price list, but which you’ll notice immediately when you hold the print in your hands.

What is the best print quality for a photo? What is the best image quality for printing?

The best print quality is the one that faithfully reproduces what you photographed. Not darker, not duller, and with no shift in tones. To achieve this, several factors come into play simultaneously.

Firstly, the printing technology. Photographic inkjet and laser printing do not produce the same results. Inkjet printing, used by reputable photo labs, offers smoother colour transitions and significantly superior reproduction of fine details. It is the go-to choice for all personal or artistic photography.

The quality of the paper, next. Professional photo paper absorbs ink differently to standard paper. It guarantees deeper blacks, brighter whites and far greater longevity over time. A print on low-quality paper may start to yellow or fade in just a few years.

Finally, equipment calibration. A properly calibrated printer reproduces colours consistently from one print to the next. This is what sets a professional lab apart from a low-cost solution, where each order may produce a slightly different result.

Ink and paper: the real factors behind a dull or vibrant result

The impact of inks on the quality of a photo print is often underestimated. Yet it is one of the most decisive factors. Professional-grade ink reproduces a wide colour palette, with subtle transitions between shades. Low-grade ink flattens the nuances and produces that slightly plastic-looking finish that is instantly recognisable.

Durability also plays a key role. High-end photographic inks are formulated to withstand the test of time, light and humidity. A print produced using this type of ink can retain its colours for several decades – provided, of course, that it is stored under the right conditions. This is not the case with generic inks, which some service providers use to cut costs.

As for the paper, it is not merely a medium. Its texture, weight and surface treatment directly influence how the ink is absorbed and rendered. A satin-finish paper will not produce the same result as a matt or glossy paper, even with the same inks and the same source file. Choosing the right paper is already a step towards shaping the emotional impact of the print.

At AgfaPhoto Print, the brand’s expertise in the world of imaging is reflected in the rigorous selection of materials used. This high standard for consumables is precisely what low-cost providers sacrifice first in order to offer attractive prices.

Colour gamut: why your print might not do your photo justice

The colour gamut refers to the range of hues that a piece of equipment is capable of reproducing. The wider this gamut, the closer the colours in the print will be to what you saw when taking the photo or on your editing screen.

A printer working with a limited colour gamut will automatically compress certain shades. Deep blues become less intense, oranges lose their warmth, and greens lack vibrancy. This shift is often imperceptible on a single print, but becomes obvious as soon as you compare two prints of different qualities side by side.

The colour space of your file also comes into play at this stage. The vast majority of digital photos are encoded in sRGB, which is the recommended standard for photo printing. If your file is in a different colour space, such as Adobe RGB, an automatic conversion will take place during printing. Depending on how it is handled, this conversion may slightly alter certain colours. Checking the colour space before sending the file is one of the good habits to adopt. Just like resolution, framing and the overall colour balance of the image.

From photo to print: preparing your files properly so nothing is left to chance

Having a good file and choosing a quality printer goes a long way. But there’s one final step that people tend to rush through due to a lack of time or experience. Preparing your photos properly before placing your order ensures that nothing is lost between the screen and the paper. A few simple steps are all it takes, and they really do make a difference to the final result.

Preparing your photos for successful printing: the right steps to take before placing your order

To prepare your photos for successful printing, there’s one key step to adopt that’s arguably the most important. That is to always work from the original file. Not the version shared via WhatsApp, not the photo downloaded from Facebook. The raw file, exactly as it came out of your camera or editing app. Social media platforms and messaging apps automatically compress images – sometimes very aggressively – without you realising it on screen.

Next, remember to check your photo’s exposure before sending it. Smartphone screens are often very bright, which makes images look better than they actually are. A photo that appears well-exposed on your phone may turn out noticeably darker on paper. A slight adjustment to the mid-tones beforehand prevents this sort of disappointment.

The file format is also very important. JPEG is well suited to photo printing, provided the compression is set to the highest quality setting when exporting. Every time you save a file as a JPEG, data is lost. If you’re editing your photos, work in RAW or TIFF whilst you’re in the editing phase. So only export to JPEG once, when you’re ready to send the file.

Photo prints, posters, photo books: adapting your file to the chosen medium

What works for a standard photo print isn’t necessarily suitable for a large-format poster or a photo book. Each medium has its own technical constraints. Anticipating these helps avoid many surprises when you receive your order.

For small or medium-format photo prints, the requirements are relatively straightforward. A photo taken with a recent smartphone generally offers more than enough resolution for a 10x15 cm or 20x30 cm print. Note, however, that extra care is needed with framing. This is because the aspect ratio of a mobile phone photo does not always match the proportions of a standard paper size.

For a large-format poster, the situation changes. The larger the printed area, the more any imperfections in the source file are magnified. A slight pixelation that’s invisible on a small print becomes frankly distracting on a 60x80 cm poster. You need to start with a file containing enough pixels to ‘hold up’ – in the literal sense of the term.

For a photo book, there are two main constraints. Each page features an image, sometimes across a full double-page spread. The quality must be up to scratch for every image, not just the cover photo. This is often when you realise that certain holiday photos downloaded from social media are no longer suitable for printing.

What we’ve learnt, ultimately, about photo print quality

The quality of a print isn’t really down to chance. It depends on a series of decisions, big and small, that follow on from one another from the moment the photo is taken right up to the moment the paper comes out of the printer.

File resolution, choice of inks, paper quality, colour gamut, pre-print preparation… every one of these criteria counts. And when one of them is overlooked, it’s often the entire print run that suffers.

At AgfaPhoto Print, these criteria aren’t just a list of marketing promises. They’re standards applied to every order, whether it’s a single print or a more ambitious project. Because a photo you’ve taken the time to choose deserves a print that lives up to it.