I am presently limited to 6 by 9 by the darkroom.
6 by 9 needs a wider angle lens than the Optar 135 mm f/4.7 on my Graphlex.
But wide angle large format lenses are way over budget.
Desertscape on the forum here kindly advised that the Pentax 67 lenses might just cover the 6 by 9.
So I purchased a very nice Takumar 6X7 1:4.5 75 mm from KEH for $140 shipped.
Made a lens board of sandwiched aluminum plates supplied already cut slightly oversize and radiused from Stainless supply of Monroe NC
Cut a 67 bayonet mount in the lensboard on the lathe.
I just shot the first roll of Kodak 400 TMY-2 and i will develop next Saturday
Also have purchased some Fuji Pro 400 to try.
I am using the little M43 camera with the Pentax 40 mm pancake as a spot meter.
The image on the ground-glass is very good, the lens appears to cover the 6 by 9 corners and might even have a little allowance for some rise.
With a register of 84.95mm the lens is well back on the rails, so there is only room for about 10 mm of rise and a few degrees of up tilt.
the lens is set at infinity with rails locked to allow use of the distance scale on the Takumar.