What exactly is the M50 crop in 4k? With a 0.71 reducer?

[Plucas]

Hi,

The articles I've read suggest different crop factors on the M50 in 4k.

With no digital IS, what would it be?

And what would it be with a 0.71x speedbooster?

 

[mensaf]

It's about 2.6 in 4k and drops down to about 1.8 with the speedbooster. I have one of those custom ones and it's pretty dang neat-o. I wouldn't use the 4k unless I were shooting manual (focus peaking ftw) and either moving slowly or not at all. Lots of rolling shutter. That being said, I love the way it looks, but I can't do much with it unless I'm doing an interview or just some b-roll.

 

[Plucas]

2.6! That's interesting. Andrew Reid, in his article on the M50 as a Digital Bolex says the crop is 2.34x while Dave Altizer said it was around about 2.45x.

Yes, the use of the 4k is limited mainly to interviews or slow pans.

I wonder if someone, like the engineer in South Korea who made the EF-M EF speedbooster, would like to also create an EF-R to EF one with a 0.71x reducer. That would reduce the 1.8x crop to something more usable (albeit you would have no access to the EF-R lenses).

 

[mensaf]

It's a 1.6x crop and then I think something a little below a 1.7x crop when it's in 4k. It turns the wide lens into something absurd. Outside of that, it's not really an issue truth be told.