Metabones speedbooster: is there any reason to get full frame now?

Phil Hill wrote:

You don’t yet understand what I’m saying.

The larger sensor can capture and process twice as many photons per exposure as the smaller sensor.

This has nothing to do with the lens or the aperture, but it has everything to do with signal-to-noise ratio, and this impacts DR, resolution and color as the ISO rises.

Given similar technology, the larger sensor will always perform better in this regard over the entire image.

What you’re saying would be correct if you crop an APS-C-sized portion of the FF image, but that’s not what we’re discussing.