[thxbb12]

Indeed. Or just look at the Canon EOS 60D and Canon EOS 6D. They have almost the same weight. With the Canon EF 24-70mm f2.8 L USM II the FF combination will similar as the 60D with new Sigma, and yet will offer a bigger focal range. Imagine the difference with the Tamron 28-75mm.

 

Absolutely.

The fact is, for equivalent DOF control, larger formats allow for smaller lenses.

There are many examples out there.  Classic small primes such as 50 f/1.8, 35 f/2, 20 f/2.8, etc.

If you were to build equivalent lenses, say for MFT, these would translate to 25 f/0.9, 17.5 f/1, 10 f/1.4. How big would these lenses be? Certainly larger and heavier than their FF counterpart (which are older designs too)!

 

I'm still waiting for a manufacturer to build a FF mirrorless with small pancake lenses (f/2.8 ones would be enough). Surely, such a system is doable and it would combine small factor with very high IQ while allowing one to put faster glass for DOF control if needed.

 

Am I the only one to think such a system would be great? Why no manufacturer is doing it?