The photography  may be recovered by  digital restoring. And  it doesn´t  modify the 

 original photo.Copying  the  information from the original one, a back up is produced

as a safeguard  against anylost of the original  contents. And only the back up 

will be executed  throughout  restoring process. Any photos may be restored from 

 the material  in paper or still the negative or positive chromium.  Traces, spots or

other damages can disappear or be widely reduced depending on its original.

Both, black & white and colored photos can be recovered.