Lots of thoughtful answers and most make a lot of sense. There was a time when pin sharp resolution was really important to me. Similarly, I would never print to a size which would compromise that. Interestingly, these days I'm experimenting a wee bit with vintage Rollei TLR's (pre-war and uncoated glass). There's just something magical about the whole process. Loading, framing and shooting something which was made 75 years ago. Even better, the images from the old Zeiss glass (compared to my Pentax 67) are difficult to describe but very pleasing all the same. I will get around to printing some big enlargements from these negs. If the results don't match the sharpness of the Japanese glass, it may not bother me this time around because I'll be looking for an image which will move me rather than clinical, technical perfection...