diffusion chambers for differnt size film?

[trythis]

Just started playing with a new to me Besesler computerized dichro head 45.
In the pile of stuff are two extra diffusion chambers with different sized outputs. 6x7 for one, the other I dont remember.

Would I benefit from swapping out the 4x5 if I only rarely shoot with anything over 645? I have a few 6x12 and 6x6 cameras but dont use them often.

having the smaller chamber gets me more light?

Do people swap them for each negative size just like lenses?

 

[MattKing]

The smaller boxes will give you more light, so will shorten exposures.

They may also help you avoid some flare.

I almost never switch mine.

 

[Photo Engineer]

I have 3 as well and always switch.

PE

 

[wildbill]

I only have 1 (4x5) and never switch it I guess having more or switching them never crossed my mind.

 

[grahamp]

I have two enlargers. One (the old model with front supports) has the 6x7 mixing box and is limited to smaller formats (though I have a 4x5 mixing box for that head as well). The newer enlarger has the 4x5 mixing box, and is used for 6x9 and up.

I have to admit that when I only had the one 45S head, I left the 4x5 mixing box in 95% of the time.

 

[Mark Crabtree]

I switch if I need shorter exposures.

 

[ic-racer]

In the Dust LARABOX system, going from the 4x5in box to the 6x9cm light box gains 1/3 of a stop.
In the Omega D5500 system, 6x9cm negatives have to be printed on the 5x5in box. Going from the 5x5in box to the 7x7cm box gains 1 stop.