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Great lens but still trying to learn how to use it :-)

For the sharpest results use a tripod. Though this is not always practical.
If you shoot in RAW then further sharpening can be done in post-processing​.
Great lens for macro photography.

Hey thanks. Yes, I must stop being so lazy and make much more use of my tripod. No excuses now!

Cheers

Here is a shot I did with my 105mm during a wedding I covered.
macro-1.jpg