I am scanning multiple slides with a HP 5500c. And after reading a while in this great forum I decided to scan three slides at once and then crop them in PE. Goes faster than scanning each single one, but you have to enhance the pics afterwards.
My question is now whether anybody knows about an automatic crop tool with the purpose the cut of the black background around the slides. Right now I am doing this with the marquee tool and then crop. An automatic crop tool would be a big time saver.