Both camera are entry level mirrorless camera available at same price point… take a look at the specification comparison below…
Samsung NX3000 vs. Sony A5000 Specification Comparison Table.
Megapixel: Samsung NX3000 features 20.3 megapixel sensor, on the other hand Sony A5000 it is limited to 20.1 megapixels, so resolution wise Samsung NX3000 is much better.
Bigger Sensor Size: Samsung NX3000 have bit bigger sensor size compared to Olympus E- M10, the bigger sensor area gives you more dynamic range in your images, more color depth and better low light performance aka less amount of noise visible during HIGH ISO mode.
More AF Points: Both camera feature same contrast based AF system but we get more AF points with Samsung NX3000 compared to Sony A5000.
Top Continuous shooting speed: Samsung NX3000 captures fast shooting speed (5 vs. 3.5fps) compared to Sony A5000.
ISO performance: The Sony A5000 have limited ISO range compared to Samsung NX3000.
Video Mode: Samsung NX3000 features full HD video recording @ 30 and 25 fps frame rate. HD video recording @ 30 fps and 25 fps.
Video Mode: Sony A5000 features full HD video recording @ 60 and 30 fps frame rate. HD video recording @ 30 fps.
Battery Life (CIPA): Sony A5000 features longer battery life (According to CIPA) compared to Samsung NX3000.
Dimensions: Sony A5000 is smaller than Samsung NX3000.
Weight: Sony A5000 lighter than Samsung NX3000.
High ISO Test Between Samsung NX3000 vs. Sony A5000
Verdict: Samsung offers more resolution, more ISO range, more AF points and fast continuous shooting speed compared to Sony A5000. We highly recommend you to buy Samsung NX 3000.
Buy Samsung NX3000 from Amazon || Buy Sony A5000 from Amazon