Using 120 inserts in Bronica SQ 220 film backs?

[aldevo]

I have heard that Bronica SQ-family 220 film backs can accept 120 film inserts.

Those 220 film backs are, unforuntately, much more plentiful than 220 film is these days. As a result many SQ-A and SQ-Ai kits at KEH an Ebay come equipped with the (essentially useless) 220 backs. 120 inserts are, however, quiite plentiful.

Are there any disadvantages to using a Bronica 120 film insert in a 220 back, such as increased chance of light leaks, diminished film flatness, greater mechanical wear, etc?

Thanks

 

[Shangheye]

Nope...the backs don't normally come labelled 220...they are the same back as the 120. Only the insert is different. K

 

[wiltw]

The back is 'universal' and take both 120 and 200 inserts.

 

[vdonovan]

Hey, go ahead and send me your totally useless 220 inserts. I'll dispose of them for you!

 

[PhotoJim]

Try to get 220-i backs. They have a much more conveniently-placed ISO dial than the straight 220 backs that are older.

The 120/220-i inserts have a foldable crank for manual winding, which is nice. The 120/220 (old) inserts have a folding key which is less convenient but still usable. As a result you can get older 120 inserts and insert them into 220-i backs and get 90% of the benefit of a full 120-i back.