It's complicated, and there's no single way to answer that question. The shortest answer is that inch for inch, high-megapixel digital sensors have higher reso

It's complicated, and there's no single way to answer that question. The shortest answer is that inch for inch, high-megapixel digital sensors have higher resolution than film, especially when measuring luminance only. The longer answer is that those sensors are incredibly expensive and lose some degree of spacial resolution when it comes to colour data specifically, due to having to use a colour filter array over an inherently monochrome sensor and then de-mosaicing the result into a colour image. There's also the tradeoff for film ISO versus grain size, which (mostly, in a lies-to-children kind of way) means that the gap between film & digital increases as the amount of available light goes down. Of course, you can also use an 8"x10" large format film camera to capture an effective 600 megapixel image, which digital cannot compete with. There's about 9 other questions to answer before you can get anywhere near the "more resolution" question.