Hi,
Can't speak for the 105, since I do not have the lens. But I do
have the 60mm Micro, and it is very sharp. The only problem doing
1:1 Macro with this lens is, the working distance. The min.
distance I think is 8 3/4 inches, and that is from the subject to
the film plane, that leaves roughtly a couple inches from the
subject to the front element of the 60mm !
Except for the working distance (during Macro) problem, this lens
is absolutely sharp, and I just love it. I also use it for
portraits since I do not have a 50 mm.
-Sanjay
Just out of curiosity I know it might sound dumb (very new to
this), but when you get that close to a subject will there be
enough room for the flash to light up frame?. Assuming that the
lighting condition and not ideal? Since the angle of the flash
cant go below 45 degrees.