"Alan Smithee" wrote in message
news:eWlWc.186458$M95.151149@pd7tw1no...
I'm mostly planning on black and white, do I need a step wedge? What are
they for. Thx.

No. You not need one. Get the book: "Way Beyond Monochrome" by Ralph W.
Lambrecht and
Chris Woodhouse. It will save you money in the short run.