What the source image decides

The first limit on quality is the file, not the printer. A reproduction made from a low-resolution scan will look soft even on expensive stock, and no amount of sharpening fixes that cleanly. Ask where the image came from. A museum archive scan, a fine-art photographer working from the original, or a licensed publisher file is the right starting point. A cropped image lifted from a catalogue or a search result is not. The difference shows up first in edges. Hard lines in Paternosto's geometric work should read as edges, not as smudged transitions. If the outline of a shape looks fuzzy at a normal viewing distance, the file is the problem.

Colour is the second thing the source controls. Paternosto worked in a restrained palette, and a poor scan tends to flatten it into a single mid-tone. A better reproduction keeps the separation between neighbouring tones, even when the original is subtle. You cannot judge this fully on a phone screen, because screens lie. Compare the print to a reference you trust, or to the way the same colours behave in another reproduction you already own. If every tone in the image sits at the same brightness, the file was compressed or the colour was corrected poorly before printing.

What the paper or canvas reveals

The support tells you whether the printer treated the job as a commodity or as a reproduction. On paper, look at the surface under a light held at a shallow angle. You want a smooth, even lay of ink with no streaks across flat areas. Gradients are the test. A sky tone, a shadow edge, or a soft transition between two colours should not break into visible bands. Banding is the clearest sign of a low-bit file or a printer that could not hold the tonal steps. It is also the thing most likely to bother you after the print is on the wall, because it reads as a defect rather than a style.

Canvas behaves differently and rewards a different inspection. The weave should be visible as texture, not as a pattern of ink pooling. Run your eye across the surface at an angle and check that the ink sits evenly in the weave rather than collecting at the intersections. Edges of the image should be clean, and the wrap or border should not show stray ink where it should be blank. A canvas reproduction that looks good straight on but messy from the side was probably rushed on the press. That is the kind of flaw you notice after hanging it, not before.

How to inspect one before you buy

Do the inspection in the light you actually live with, not under a showroom spotlight. A print that looks clean under bright retail light can show banding or a colour cast in a north-facing room. Hold the piece at arm's length first, then step back to the distance you will hang it. Most quality problems reveal themselves at the closer distance, because that is where the eye catches pixel structure and ink behaviour. If you are buying online, ask for a sample or a close crop of a flat area before you commit. A seller who cannot show you a detail of a smooth gradient is selling you a guess.

Price sensitivity makes this harder, because the cheapest option is often the one cut from the weakest file. The cost difference between a careful reproduction and a rushed one is usually smaller than the cost of replacing a print you do not trust on the wall. If a price looks unusually low, ask what stock the image was printed on and what resolution the file was prepared at. A clear answer on both is a useful signal. A vague answer is a useful warning. You are not asking for a provenance document. You are asking whether the reproduction was made with enough care to hold the image.