Evolte E-410 Digital SLR:
Sensor Size 17.3 mm (H) x 13.0 mm (V)
Alpha DSLR-A100 10.2 DSLR:
Image Sensor 23.6 x 15.8mm 10.8 Megapixel APC CCD Sensor with RGB primary color filter
So what your saying is the Sony has a bigger sensor, so it will have less noise if (or even if i dont) add a zooming lense??
The lens used is not really the issue as far as noise is concerned.
The Sony will not necessarily have less noise, because sensor size is not the only issue. There are different sensor technologies, and different processing can get different results. It generally remains the case that dSLRs (of whatever brand) have less noise than compact models though.