[Sylvain]

Ok.  My erorr but you wrote bullshit text. The lens is 24-70f1.8-f2.8. Most site  that talk about 'equivalent' do not adjust the f-stop. As an example:

http://www.dpreview.com/previews/sony-cy...c-rx100-m3

-No were do we see f8 mentioned.T

The 'equivalence' in focal length is used to so people can understand the perspective provided by the lens. Doing the same with the aperture (imho; though I'm 100% sure brightcolour will disagree) is excessively misleading.

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Why do you describe it as an f8 lens when ti is f2.8 ? Anyways I stand by my statement that the graph you provided has no relevance to the conversation as none of the camera are aspc or u4/3. But I will admit my misunderstanding that your calling it an f8 lens when it was really a f2.8 lens. Yes I know brightcolours love to adjust aperture on the lens all the time but I think he is a unique case.

The dpreview graph just supports the idea of DOF control., which is often lacking from compact, hence the graph to show why it's an interesting camera. The rest about "fast" "slow" etc is irrelevant in this graph and in this context.