So looking in the manual for my camera, it tells me that if I'm using any older SLR lenses, then to get the proper focal length, I have to multiply by 1.5. So as an example, a 100mm lense, would actually 150mm on my digital. Now I've heard a number of people make some comments about 100% crop factor. I'm not sure what is meant by that, but I'm assuming that it means that if you had a picture taken with that 100mm lense that was actually 150mm because of the 1.5 multiplier, then the 100% crop factor would crop it back to the equivilent of 100mm. Am I completely off here, if so, then what is actually meant by 100% crop factor?