Minor photo restoration does not include detailed work.

Removing red eyes, a few moles, small facial hair, insignificant correction and adjustment of color, sharpness, brightness and contrast, adding text to the photo, blurring the background.

Moderate photo restoration includes low detailed work and also the services provided by the minor photo restoration.

Restoring minor damaged, facial features, removing a skin blemish, brightening teeth, changing eye color, whitening the white area of the eye, changing hairstyle, adjustment of hue and saturation, adding special effects, converting the color image to black and white or sepia.  

Making changes on a complex background (e.g. replacing the background by various other backgrounds), removing glare from images.

Adding or removing tattoos, enhancing skin, enlarging eyelashes, reducing/removing wrinkles or age lines,  removing acne, replacing missing teeth, fix teeth, reshaping lips or nose, reducing weight,  narrowing or widening face, sliming body.

Repairing severe scratches, large creases, tears, cracks (including significant and very high detailed work), removing stains, correction of the tone, and recreating missing portions of the image, restoring severe fading or yellowing, restoring missing parts in face or body area, removing severe mold, water and fire damage, repairing seriously damaged or faded (discolored) photographs.

Colorizing photo restoration includes adding color to certain objects or a person in black and white photos, colorizing the whole picture including the objects and background.
In addition to colorizing other restoration in different classes explained above can be performed.