This is a guest post from Marolou. To write a guest post follow the instructions on that page. Thanks!
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Could this be? – Every review a read about this famous lens was full of praise about sharpness…
End of June I happily took my first photos with this “Best Prime” – awarded lens.
First some portraits on close distance and macros: https://flic.kr/p/JLvz8C
Everything looked fine, for the first six pictures. Then a portrait at a distance of ca. 5m. I tried for several times. I could not get the eyes sharp. https://flic.kr/p/JLvA1E
Could be my fault. Then I tried some landscape and found out, that the lens suffered not only of a “trace” of corner softness. But look for yourself: https://flic.kr/p/JLvxYo
I got my Canon 70-200mm F2.8 to take a comparison shot: https://flic.kr/p/JLvxjY
Wow, this looked much better. I felt bad, so I contacted my online shop and asked for a replacement (sending in the photos). They were understanding and very cooperative. Only some days later I could test the new copy, with much better results: https://flic.kr/p/JuUehJ
Some comparison pictures:
Left upper corner:
Between center and right border of frame
Close to center = focus point (The fig tree)
Lessons learnt: Test every lens you purchased the next few days despite what you are/where reading in the different reviews.
Link to Flickr: https://flic.kr/s/aHskCWfPXi
marolou