Which component contains the lens, filter, diaphragm, nodal points and shutter?

• A. Shutter
• B. Diaphragm
• C. Filter
• D. Lens Cone Assembly

Answer: (D)

In camera systems, the component that houses and aligns the optical elements and exposure mechanism is the lens cone assembly. This assembly contains the actual lens elements, the filter, the diaphragm (aperture), and the shutter, all in a single housing. It also holds the nodal points where light rays pass with minimal angular deviation, preserving accurate perspective and focus for measurements.

The other parts don’t fit as well: the shutter by itself is just the exposure mechanism and doesn’t include the lens or filters; the diaphragm is only the adjustable opening controlling light; the filter is just an optical element added to modify light. Only the lens cone assembly brings all of these pieces together and maintains their alignment for proper imaging.