I am very interested in LF photography, and I have been shooting MF and 35mm for some time. I am interested in venturing into the world of LF and I am debating between a field format 4X5 or a Mono rail. What are the benefits, if any of a mono rail vs. field? I know a field camera is lighter and more mobile, but lack some of the adjustments of a mono rail. Also, is there a difference in the lenses for each? I understand that the standard lens work well on both, but is there a functional difference as far as dof between a field and mono rail camera? Again, thanks in advance for any advice or opinions. Jeff C.