FF SLR 1Ds/5d question

heres where I'm confused if both of these full frame SLRs are being mareketed torwards wedding and landscape photographers, how does this make sense, as the wedding /portrait people need narrow DOF and I would presume a landscape photographer would need a wide DOF. sorry to ask such basic questions
TIA

DoF's only one of the concerns. The FF bodies give you the opportunity for much wider angle of view than the crop bodies do. They also offer more pixels than the comparable crop bodies at a given angle of view.

And dynamic range. It's tremendously subjective, but even with highlight tone priority I find it much tougher to control DR on my 40D compared to my 5D. The 5D just keeps tickin' no matter how tough the lighting is....

The key phrase here is perhaps 'DOF control', rather than just 'DOF' alone.

A FF SLR will offer you the ability to have more DOF control compared to a APS-C camera. In the same vein, a camera with an APS-C sized sensor will offer you the ability for more DOF control than a P&S camera.

This means that it is easier to get a narrower DOF and thus more developed background blur or 'bokeh' when using a FF SLR compared to an APS-C SLR.

Of course this is oversimplifying things, but I don't want to get into the awful bits on perspective, magnification, and the like.

so to clarify, because of its design, FF is easier to create narow DOF than with crop, however wide DOF is still possible with enough light and proper aperture

mogearnotalent wrote in post #4381445
so to clarify, because of its design, FF is easier to create narow DOF than with crop, however wide DOF is still possible with enough light and proper aperture

Put simply, I guess that's the general idea. We'll let the technical ones chime in with their stuff.

My widest lens is the 50/1.4 and I can get dof narrowed down to just a few mm and with a smaller aperture for landscapes I have no trouble getting everything in focus. The same was true for the XT when I had it. I think the difference in depth of field between crop and ff, in practice, isn't really a big issue. It's more about the size of the sensor effecting your angle of view and perspective when taking landscape type shots.

I think you're confusing DOF with AOV or mixing the two together when they are mutally exclusive things. DOF can only be shallow or deep. AOV is wide or narrow. You can have a wide AOV with a shallow DOF or a narrow AOV with a deep DOF. AOV is angle of view for those who didn't know.