Sony A580 review comments

Started May 28, 2011 | Discussions thread
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Re: Sony A580 review comments
In reply to steelski, Jun 5, 2011

steelski wrote:

Masterbrew wrote:

IcyVeins wrote:

DPR says the image quality is virtually identical to that of the A55 and looking at the RAW samples that appears to be the case, even at high ISOs, so why does the A580 have a DXO mark score of 80 while the A55 has just 73?

Because the A55's SLT mirror grabs a third of a stop of light.

Actually it grabs close to 30% of all light comming to the camera, which is closer to 2/3rds of a stop,

It's half a stop. Both in theory based on 30% of the light being directed towards the af sensor and in practise.

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