Quote Originally Posted by Leigh View Post
Actually, I prefer a bit longer lens for close-ups.
Longer lenses are perfect for reproductions ( twodimensional subjects); for typically threedimensional closeups the shorter lens will give sharper results.
This has to do with the ratio of focal length and "Bildschale" (sorry, I'm not able to translate "Bildschale", but a short look at "saggital plane" and "meridional plane" may help https://de.wikipedia.org/wiki/Sagittalebene_(Optik)) which is smaller at shorter lenses, which results in smaller COC in areas away from the optical center.

Ritchie