-------- Original Message -------- Subject: scanning specifications Date: Mon, 4 May 2009 15:54:46 -0400 From: Boardman, Richard <[log in to unmask]> To: <[log in to unmask]> Hello, We’re having a conversation here about scanning color maps from our collection of Philadelphia real estate atlases. Each plate is usually a two-page spread, measuring about 20” x 28”. They have been scanned at 300dpi, 24-bit color but some are now advocating going to 48-bit color. Others maintain that this would produce a huge, almost unusable file. What are the pros and cons of 24 vs 48-bit color scanning? Is anyone doing anything at that level? How is it working out? Thanks. Rich Boardman Map Collection Free Library of Philadelphia