Your precious slides and negatives will be adjusted to produce the best print possible depending on its deteroration

 

Although early black and white negatives and Kodak slides are holding up quite well even after 50 to 60 years the same cant be said for Agfa(blue and white plastic mount)

or fuji hanimex slides(green and white mount. If you have any of these types and they are important to you its time to act as they are fading quickly.