Reasons to choose Digital IXUS 400
Released in 2003, Digital IXUS 400 has about 38 mm² of sensor area, 4 MP effective resolution, and a 230 g body. Use these values to narrow the field, not as an overall image-quality score.


The Digital IXUS 400 and PowerShot S40 have the same sensor area. Compare pixel density, sensor architecture, and release generation to understand likely image-quality differences.
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 Digital IXUS 400 and PowerShot S40 have the same sensor area. The Digital IXUS 400 has the lighter body. The Digital IXUS 400 has the higher effective resolution. The Digital IXUS 400 is the newer release. Also consider the lens system and subjects you shoot.
Released in 2003, Digital IXUS 400 has about 38 mm² of sensor area, 4 MP effective resolution, and a 230 g body. Use these values to narrow the field, not as an overall image-quality score.
Released in 2001, PowerShot S40 has about 38 mm² of sensor area, 3.9 MP effective resolution, and a 260 g body. Use these values to narrow the field, not as an overall image-quality score.