hi germano woehl jr. i have never done any slidecopying but i would not try it with matrix metering! if all your slides are exposed correctly you can use the same expositure for all slides! i would take a foto (on slide film) of a gray card an then use this slide to set the exositure of all your slides.. (all with center weight metering) i would also not use the lens at 2.8 because normal lenses work best if they are stoped down 2 times so i would use it at 5.6. but i am nota profesional so i may be wrong.. bernhard
