I've been testing for an upcoming shoot. I need the highest resolution for large prints and decided to return to my film roots and shoot "large format" -- for the non photographers, this is with those antique looking cameras with accordian style bellows and the big sheets of film. I use the more common 4"x5" format, which yields very high resolution images capable of printing extremely high quality images over 60" long.
Here's a web-sized copy of my image from Sunday's shoot. The same Corvette shot at the same location, at the same time:

Here's an enlargement of the wheel. Check out the detail. This was a 40 megapixel scan. For true fine art work, I will be scanning at 240 megapixels. That's 6x the resolution of this image:
For comparison, here is a similar digital image. Notice the less rich colors lack of visual impact:
