Another Olympus E-M1 and SONY a7 walkabout test, high ISO

Started Jan 29, 2014 | Discussions thread
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amalric Forum Pro • Posts: 10,839
Re: You are rigtht and BS is try to sell Sonys

Lab D wrote:

skyglider wrote:

blue_skies wrote:

How so: in equivalence terms, the Oly 12-40/f2.8 becomes 24-80/f5.6 versus the Sony 24-70/f4.0?

Hi Henry,

I understand how the Oly 12-40mm is equivalent to 24-80mm in 35mm terms because of the 2x crop factor of the micro 4/3 sensor. But AFAIK, the aperture remains the same.

Aperture is the same.

Think of it this way:

A fat lady and a thin supermodel are laying on the beach. Who will get sun burnt faster? Answer: both will burn/tan the same despite the fat lady having 4x the skin area. This is because they both have the same exposure. Anyway, Four Thirds is the hot supermodel.

F/2.8 is the same for a Nikon 1, an RX100, the E-M1 and the A7.

LOL, this is the best I have ever read about exposure. You made my day, and I am sure to quote it. Thank you


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