Will using the 'ef-eosm' adapter and (ef or efs) lenses on a M50 block of affect the built in flash?

[Rlargan]

Will using the 'ef-eos m' adapter to mount ef or ef-s lenses on a M50 block of affect the built in flash? I ask this as they are generally bigger than m series lenses.

[Waddizzle]

Larger lenses will most likely create a shadow in the images.

[ebiggs1]

IMHO, there is no good reason to use the built in flash.  This is just another good reason not to.