I am currently figuring out which lens I should get. I found the Sigma 18-35mm, f/1.8 DC HSM ART which looks quite interesting as I want to have a nice bokeh and shallow DOF. But it is for APS-C only.
I will use the Metabones Speedbooster 0.71x on my BMPCC4k, so the crop factor is 1.349, so slightly bigger than 1.5 of APS-C. Is the image circle of the Sigma big enough to support 1.349 crop without much vignette?
I found this image on https://www.the-digital-picture.com/Comparisons/Sigma-18-35mm-f-1.8-DC-HSM-Lens.aspx and if I have done it right, the red circle is my "MFT" and the golden one is APS-C. Could anyone check if it's done right?
Also, does anybody know if it has a direct focus or a servo focus?