out of 5
All of the cameras in the Toyo/Omega 4X5 monorail line represent an excellent value. I have 2, the D45A and a 45E. The D45A is fully modular and features user interchangeable bellows. Toyo/Omega metal lens boards interchange between all models of the 4X5 monorail series.
The rise and fall movements of both standards are geared as are the standards to the main rail. The rail clamp (the attachment point to the tripod head) is all metal and very robust. On the front and rear standards, the swing and shift controls are secured with friction locks. The shift movements ride in beautifully machined dovetails. Tilt movements on the standards are secured with friction locks and feature a scale marked in degrees. Tilt movements are on the lens and center of film axis.
Using the D45A is an absolute pleasure. The control layout is straight forward and the friction locks are quite rigid. The users interchangeable bellows is a great feature, allowing the photographer to switch to a bag bellows in the field to accommodate wide-angle lenses. I strongly recommend the Toyo/Omega monorail cameras.