What resolution and color tell you first

The first check is mechanical and it is the one most buyers skip. A reproduction that looks fine on a phone screen can fall apart on a wall. Zoom to one hundred percent on your own device before you commit. If the file breaks into blocks or soft smudges at that magnification, it will read worse at full size. Janet Sobel's work depends on small shifts in tone and on edges that are not razor sharp, so a file that cannot hold those shifts is already failing. Color is the second check and it is less forgiving. A warm painting pushed too far reads orange and dead. A cool one pushed too far reads blue and thin. The safest test is comparison against a known image of the original, not against the screen you are holding.

Price sensitivity makes this harder, because the cheapest files are often the most compressed. That is not a rule you can trust blindly, but it is a pattern worth remembering. A low-resolution file enlarged to fill a wall is the most common failure and it is the one that costs the most to live with. If you are choosing between two prints and one is visibly larger in file size at the same dimensions, the larger file is usually the safer bet. That is not a guarantee, only a signal. The real question is whether the print retains the painting's tonal range or collapses it into a few flat bands of color.

How to read the surface and the medium

Sobel's paintings are built in layers and that matters for reproduction more than it does for a flat color field. A print that flattens every passage into one even tone has lost something specific, even if it looks clean from across the room. Step back and then move closer. A good reproduction still reads as paint at close range, or it makes an honest decision to simplify the surface rather than fake detail that is not there. Canvas and paper behave differently here. Canvas tends to soften fine edges and can make a busy surface feel more integrated. Paper tends to hold sharper detail and can expose compression that canvas hides. Neither is automatically better. The choice is about which loss you can live with.

The same image can be printed well or badly on either support, which is why the medium alone is not the test. A poorly matched color profile on canvas can make a warm painting feel heavy and murky. A poorly matched profile on paper can make the same painting feel thin and chalky. If you are weighing a canvas edition, look at how the file handles the darker passages, because that is where compression usually shows up first. If you are weighing a framed poster, look at the edges between adjacent colors, because that is where a weak file turns into visible banding. The better reproduction is the one that does not ask you to ignore a flaw at arm's length.

The practical checks you can do before paying

Ask for the print size and the source file size before you buy, because those two numbers tell you most of what you need to know. A file that is too small for the printed dimensions is the clearest warning sign and it is one you can catch early. If the seller cannot tell you the file resolution or will not tell you the source dimensions, treat that as a real risk rather than a minor inconvenience. The same caution applies to color. A print that looks right under one light can look wrong under another, so if you are buying for a specific room, think about the light in that room before you trust the screen in front of you.

If you are anxious about getting this wrong, the safest move is to start with a smaller size than the one you ultimately want. A smaller print exposes compression and color errors more quickly and costs less to replace if it misses. That is not a way to avoid the decision. It is a way to make the decision cheaper. The goal is not to find a flawless file, because few files are flawless. The goal is to find one whose flaws are too small to matter at the distance you actually view it from.