Originally posted by eddie1960 Olympus made a huge error with 4/3 IMO
At the time sensor prices and compactness were seen as the major barriers/upsells to DSLRs. At least Olympus went one way with it to m43.
Originally posted by eddie1960 APSC is a pretty good compromise but there are some serious advantages on the lens side for FF. long Telephotos and small pancake primes are the biggest apsC advantages but there are some pretty Small primes in the FA ltd for FF
Here's what Nikon and Canon love: they get to sell those who want telecentricity get APS-C along with a smaller form factor. The 'zoom' factor sells as many cameras as megapixels ever did.
And you are tempted to upscale for wider angles and better DOF and NR control to FF. Makes you a 'prosumer'.
This all spurs not only additional sales of bodies, but of lenses as well.
APS-C has spurred a tremendous (and profitable) interest in macro. Witness the DA 35 Ltd. And also bird photography with that convenient 1.5 crop factor and much smaller lenses. Witness the DA 55-300, a stunning lens for the price and a value the 135 format could never accomplish.
There's a lot of $$ to be made selling 1 person two (or more) cameras.