I’d have to say that I found this first reading to be very helpful. I am new to the realm of photography and I have always wanted to know about how the fancy SLR cameras worked. I especially enjoyed how the book used examples of the human eye to explain the different controls on the SLR. It helped me to understand and remember them better. It was also fascinating to read about and compare digital point-and-shoot cameras with SLRs and DSLRs. I always wondered what all of the differences were and I found the information to be very helpful.