We have an Imacon film scanner capable of scanning 35 mm and medium format  transparencies and negatives in strips or individual frames. The resolution is 3200 dpi which is enough for a 20 x 30 inch print from a 35mm frame. Twice as large from a 6 x 4.5 and larger still for a 6 x 6 or a 6 x 7 format.

We can also scan 4 x 5 transparencies on our flatbed scanner at a maximum resolution of 2400 dpi. This is enough resolution for an 80 x 60 inch final print if all pixels are used.