thank you for digging up this Drosophila pic! Given your username, you must be more of a beetle fan, though.
You are right, the pic can be sharpened more. Thanks to TN I learned to use the "Unsharp mask" in Photoshop in a more expert way since I posted the maggot pic. The basic problem with the shot (taken 43 years ago, ugghhh) is the lack of depth that came with the 10:1 or more enlargement . Today I would sharpen 100%, use a radius of 2 or 3 and a treshold of 10 levels.