This is probably our most commonly asked question. There is no direct answer as each image must be considered on a case by case basis and factors such as ISO settings, lighting conditions and focus can make big differences. We’ve set our minimum resolution for upload fairly low to leave more options available but rest assured that we look at each and every file and if we see a problem we’ll contact you before printing. For exhibitions and more critical analysis we recommend that you contact the custom studio and consider making an appointment.