Any real benefit with 48 mm over T2 for DSLR adapter?

[ofranzen]

Apologies if this is in the wrong section.

I have two DSLR camera adapters with T2 and 48 mm thread respectively and I need a 2" nose piece. The T2 nose piece I have is for refractors and too long for my mak/newt. The 48 mm is for filter drawer I think but that's in the future for me.

I can pretty easily find a 2" nose piece for the T2 thread in the country but will have to order a 48 mm from abroad I think. Will there be a difference between the larger 48 mm and the smaller T2? I'm mainly thinking about vingetting. My camera is a Canon 1200D which has a crop sensor. Thanks in advance.