Reasons to choose DiMAGE X31
Released in 2004, DiMAGE X31 has about 15 mm² of sensor area, 3.2 MP effective resolution, and a 115 g body. Use these values to narrow the field, not as an overall image-quality score.


The DiMAGE Z3 has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
Amber marks the value that is generally preferable in this comparison context. It is not an overall camera score.
The DiMAGE Z3 has the larger sensor area. The DiMAGE X31 has the lighter body. The DiMAGE Z3 has the higher effective resolution. The DiMAGE X31 and DiMAGE Z3 were both released in 2004. Also consider the lens system and subjects you shoot.
Released in 2004, DiMAGE X31 has about 15 mm² of sensor area, 3.2 MP effective resolution, and a 115 g body. Use these values to narrow the field, not as an overall image-quality score.
Released in 2004, DiMAGE Z3 has about 25 mm² of sensor area, 4 MP effective resolution, and a 335 g body. Use these values to narrow the field, not as an overall image-quality score.