Pana is rumored to plan CFF (compact full frame) for post M43

Started Mar 19, 2013 | Discussions thread
forpetessake Veteran Member • Posts: 4,892
Re: Why would Full frame Mirrorless affect M4/3?

Lenses would still be big right???

Nope, it's a common misconception. Compare, for instance, 35-100/2 on 4/3 and the 70-200/4L IS on 35mm FF. The size of most lenses is determined by the amount of light they need to collect, the same amount light - the same size of the lenses, no matter what the sensor size is:

Except the fact that F4 is slow. The main reason for an F2.8 or faster aperture is to achieve faster shutter speeds. As someone who owns a 70-200/4 and 70-200/2.8 L, I can tell you there is a huge difference in size, and for many things that extra stop of light from the bigger lens is a godsend.

That's because you don't understand the laws of physics, that f/2 on m4/3 sized sensor is fully equivalent to f/4 on FF sensor -- you'll get identical pictures in both cases. Follow the link.

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