An enlarger that maxes out at 6x9 (Beseler 23C and others) or an enlarger that maxes out at 6x7 (Beseler 67 or Omega 700 and others) is easily adjusted to print 6x7, 6x6, 6x4.5, 127, 35mm etc.
And in case it isn't clear, in most cases if you buy an enlarger with a condenser light source, you can later switch the light source for a diffusion colour light source or a diffusion variable contrast black and white light source.
Most enlargers are designed to be modular. You just switch the light source heads to accomplish the change.
The used market is such that many of the more robust enlargers are inexpensive, because they are large and moderately difficult to ship. What you have to be aware of, however, is what the availability is for the critical accessories like lens mounts, negative holders, light modifiers (necessary in some cases to deal with changes in film format).
Some accessories are plentiful and inexpensive. Others are hard to find and/or expensive.
And in case it isn't clear, in most cases if you buy an enlarger with a condenser light source, you can later switch the light source for a diffusion colour light source or a diffusion variable contrast black and white light source.
Most enlargers are designed to be modular. You just switch the light source heads to accomplish the change.
The used market is such that many of the more robust enlargers are inexpensive, because they are large and moderately difficult to ship. What you have to be aware of, however, is what the availability is for the critical accessories like lens mounts, negative holders, light modifiers (necessary in some cases to deal with changes in film format).
Some accessories are plentiful and inexpensive. Others are hard to find and/or expensive.

