If you are getting this model to get a realistic-looking camera into a 3D scene, then you’re probably good. If, like me, you are making a custom plate that should mount to the bottom of the camera and hold it in exact orientation by precisely registering to the indentations relative to the 1/4 screw mount, then trying to use this model for the exact locations of these details is a waste of money. The size of the model when imported into CAD software turns out completely arbitrary, no matter which measurement unit is selected. To get to the actual camera dimensions, you need to calculate the scale factor to about 6 decimal places, and the scale will still remain a guesstimate that won't match the physical object. If I have to make the matching part first and then guess at the scale of the model to match the part in CAD, it defeats the purpose of having the model in the first place.