Which extension tube for XCD45p to buy

[meerec]

I'd like to use the XCD45p with an extension tube to scan 6x6cm film negatives.
Which extension tube do I need: 20mm or 48mm to achieve this in the best way?

[asfeir]

I have the 20 mm, just tested it on my X2D, should be the same on X1D.

It focuses frames from 6 x 8 cm, to 8 x 10.6 cm (approximately). So the 20 mm is what you need.
I am sure the 40 mm will not focus the full 6 by 6.

[tenmangu81]

I have a Fotodiox 48 mm extension tube that I use for 24x36 film with my XCD45P. It covers that format perfectly. So, the 20mm should be the right one for 6x6.

[meerec]

OK that means most likely I need both: 20mm and 48mm extension. Will buy both and figure it out.

[asfeir]

I do not think you need the 40 mm, both messages above conclude that you need the 20mm.

[alextsayun]

20mm is good enough.

[meerec]

I've now received the 48mm extension. It's perfect for the 24x36mm FF film.
Waiting now for the 20mm extension to be delivered.