Quote Originally Posted by Tom Hoskinson
If you are enlarging your negs this may indeed be an issue.

If you are contact printing it should not be an issue.
I've enlarged a 5x7" slide to 50x70cm, and there is no sign of unsharpness. Eirik Berger who did the scan for me reports slightly soft corners on 100x140cm, which I would say is big enough for me!