Sony A7iv Video Aperture settings

[Bonxie]

HI, I am currently getting to grips with the setting for video on my Sony A7iv.

I notice I can get an aperture setting of F51. Is this of any use when trying to reduce over exposure? Apart from affecting the depth of field is there anything else I should be aware of when using what appears to me to be a very high aperture settings. Up to recently I only took stills and cannot find anything about the effect of using an aperture so high for video. Any help or advice would be very much appreciated.

[TheGOAT]

@bonxie Well, to avoid the diffraction you need to customize the aperture values first, it's common to wonder about the practical uses of such small apertures, especially when coming from a stills background.