Compare at different ISOs for different apertures?

Started Mar 25, 2013 | Questions thread
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Compare at different ISOs for different apertures?
Mar 25, 2013

Hi,

first of all, thanks for the great website! 

When using the studio comparison tool with different cameras, say the Olympus XZ1 (max. f1,8-2,5) and the Sony NEX F3 (max. f3,5-5,6), do I have to compare them at say ISO 400 and 1600 respectively (doing only JPEG comparisons)?

To me it seems like I should, because the XZ1 is approx. 2 stops brighter. Or are there so many other variables involved (like sensor, jpeg-engine, etc.) that an answer to this is not as simple?

Another question regarding the comparison tool: the XZ1 seems to be (if looking at the queen-card) sharper than the NEX F3 (with the Samsung NX210 this is even more evident). Is this a DOF, sensor-resolution or focussing issue in that one studio shot or does that tell me that the XZ1 really does have an advantage here?

Thanks for your help!

All the best!

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