If you buy C lenses and CF lenses you will need two sets of pricey filters, B-50 and B-60
I would only buy one UV filter to protect the lens. Will it be that expensive?

... and some add a front end focus adjustment [FLE]. I have not found FLE worth the additional costs.
Yeah, I saw that. What for is the FLE? What difference does it make?

Thank you, kind regards,

igmolinav : ) !!!