What resolution do you need to scan 35mm negatives at to enlarge to A3?

To enlarge 35mm negatives to A3 size (approximately 11.7 x 16.5 inches), you typically need a scanning resolution of at least 2400 DPI (dots per inch). This resolution allows for sufficient detail and quality when enlarging the image, resulting in a print that maintains clarity and sharpness. Higher resolutions, such as 3200 DPI, can provide even better results, especially for fine details.