[wim]

I never said anything else than f/1.4 remains f/1.4, no matter which sensor behind. It leads at equivalent lenses nonetheless to the same shutter time, at given ISO and same lighting / exposure method. BC, I have no idea from what you get your idea of 12 and 24 mm lenses, none of them as used in the comparison. But reading superficially is enough for someone who already owns his truth.

 

So I will continue to think "blurbing again" when you're doing your thing. Trouble is, you never ever got the point of what I was saying. And neither do you, thxbb12. Especially with a general "BC is correct" to a pretty polemic post. Disappointing.

 

Yep, F/1.4 is F/1.4, no  matter what the lens (FL) or the sensor size.

 

DoF may be different, for sure, but that is also the case with wideangles vs teles at the same f-stop .

Essentially, the shorter the FL, the deeper DoF is at the same f-stop, and it is more or less linear - this is why at a 2x linearly smaller sensor the DoF is twice as deep with an FL equivalent lens: it is twice as short, FL-wise.

 

Kind regards, Wim