Lee kit for Sigma 35mm f/1.4

[LongLensPhotography]

I am looking to buy an adapter for 35mm Sigma (on Full frame). Do I need wide angle version or will standard one do the job?

I'll probably also order Big Stopper as I can't be asked to have as many ND across all lenses. Can I just check that it doesn't cause any nasty flares or loss of contrast being non-coated?

Thanks

 

[chrism_scotland]

I've got a standard 67mm adapter and its fine.

 

[Coyon]

From Lee:
Standard adaptor ring
The standard adaptor ring is suitable for use with lenses up to a moderate wide-angle. It sits in front of the lens's front thread. The standard adaptor ring is compatible with lens focal lengths of approximately 24-28mm (35mm SLR equivalent) and upwards.