>>4241783Anon, most speedbooster just adapt a lens for a larger sensor to a smaller one. It's very complicated and expensive to make a good reducer for the same size sensor due to flange distance + angle. Going smaller makes it much easier which is why it's so common.
>tell me, by how much does an olympus 100-400 f5-6.3 decrease the focal length by as it applies its supposed speed-boosting affectIt doesn't. The rear element concentrates the light to the size of the mft sensor, just like the full frame lens does for its sensor. They are different sizes. The "extra" light you think you're getting from the larger rear element of the FF lens is spread out over a larger area. Ironically, if you used a reducer, it would be closer to what you imagine you would be getting.
I've never seen anyone miss a point so much in my life. Why are you ignoring the magnifying glass and flashlight analogies so much? Is it because you are trying to pretend you never said that a FF f/5.6 lens will be much brighter than a MFT f/6.3 lens because you didn't realize the relevance of sensor size?
You're a clueless snapshitter asking for help on /p/. Let that sink in.
