Given by the 500 Euro sale price you already locked certain expectation. Starting at 39 cm has sharp images. Only at 300mm focal length I have with the Canon EOS 700D gelegendlich fuzzy, blurry shots. Unfortunately, I have to get on to my Fujifilm with 135mm or 230mm. Only in the price range of 800 euros seems you can expect razor-sharp images at high focal length in any situation. However, my next objective is likely to be a Tamron again. Original Canon and Fujifilm lenses also have their weaknesses.