Reasons to choose EOS 6D
Released in 2012, EOS 6D has about 856 mm² of sensor area, 20.2 MP effective resolution, and a 770 g body. Use these values to narrow the field, not as an overall image-quality score.


The D4s has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
These cameras were released 2 years apart. Consider sensor generation when comparing pixel metrics.
Amber marks the value that is generally preferable in this comparison context. It is not an overall camera score.
The D4s has the larger sensor area. The EOS 6D has the lighter body. The EOS 6D has the higher effective resolution. The D4s is the newer release. Also consider the lens system and subjects you shoot.
Released in 2012, EOS 6D has about 856 mm² of sensor area, 20.2 MP effective resolution, and a 770 g body. Use these values to narrow the field, not as an overall image-quality score.
Released in 2014, D4s has about 860 mm² of sensor area, 16.2 MP effective resolution, and a 1,350 g body. Use these values to narrow the field, not as an overall image-quality score.