The following are full frame DSLR cameras:
Canon EOS 5D, EOS 5D Mk II, Canon EOS 1Ds, 1Ds Mk II, 1Ds Mk III
Nikon D3, D3x, D700
Sony a900, a850
The following are APS-H (large crop) DSLR cameras:
Canon EOS 1D, 1D Mk II, 1D Mk III, 1D Mk IV
If your DSLR is not on the above list, it is a "cropped" sensor.
This refers to the sensor inside the camera being smaller than the frame of 35mm film (36mm x 24mm).
Sensor Cleaning Service:
We check: Viewfinder, Focussing Screen, Mirror, Pins, Contacts
We clean: Sensor, Chamber, LCD Monitor