Lens Performance and Optical Quality
The RF 24-105mm F/2.8 delivers superior optical performance with its faster f/2.8 aperture throughout the zoom range, providing better low-light capabilities and shallower depth of field control. The newer RF mount design offers improved image quality with reduced chromatic aberration and sharper corners. The 5D Mark IV kit's 24-105mm f/4L II is still excellent but limited by the slower f/4 aperture and older EF mount technology.
System Compatibility and Future-Proofing
The RF lens is designed exclusively for Canon's mirrorless R-system cameras, representing the future of Canon's professional lineup with advanced communication protocols and optimized image quality. The 5D Mark IV kit uses the legacy EF mount system, which while mature and widely supported, is no longer Canon's primary development focus. Consider your current camera system and upgrade path carefully.
Value Proposition and Complete Solution
The 5D Mark IV kit provides a complete shooting solution with a proven full-frame DSLR body plus lens, making it immediately usable for professional work. The RF lens requires a separate R-system camera body, adding significant cost but offering cutting-edge technology. The kit represents better immediate value, while the RF lens is an investment in Canon's mirrorless future.
