Zeiss Distagon 21mm f/2.8 ZF - Lens Hood lost

Friend of mine wants to sell his Zeiss Distagon 21mm f/2.8 ZF to me, however, he lost the lens hood, given that this is pretty wide lens 21mm.

I would like to ask owners of this lens, is there any issues / problems for taking photos without the lens hood for this particular 21mm model?

thanks everyone! I know that to get a new one from Zeiss is expensive.