Recently I noticed significant corner vignetting while printing 4x5 full-frame with a 135mm lens. The D-3 has a variable condenser housing with three slots for the upper condenser lens: the upper slot for 50-80mm, middle for 90-105mm, lower for 135mm, and removing the condenser lens for 150-165mm. When the vignetting was noticed naturally the lens was in its proper place in the lower slot. However when I removed the condenser lens altogether the vignetting disappeared. Will I be compromising sharpness significantly by printing without the condenser lens and a 135? Should I spring for a 150mm lens for better coverage of the negative?
Thanks for your advice,
James