my 16-60 was sharp enough at 16 .  Noticebly soft at 80. From 50 and up I would notice lack of sharpness. I ended up trading it for a Tamron 17-70 . I know... I know..... sounds crazy ..... but in my opinion this lens is sharper.

Thanks for the advise. The lens is clean, the sensor should be clean as this camera is used mainly for shots on the street which I don´t do much of. I´ve blown the sensor with a bulb and I´ll try the plain white shot to see what shows but the I don´t think the sopts loo too much like dist. They are very pixel shaped with sharp edges. Thanks for the welcome!

Maybe try taking a photo at something like f/16 of a plain white wall and see if you get the problem. if so then follow Jerry’s advice.

Have you tried using the sensor swab (and liquid) approach? The in-camera sensor cleaning is limited in what it can accomplish. There is no way for the dust it knocks off of the sensor to leave the body, so that dust will swoosh around inside the body and as soon as the camera is moved, some dust lands back on the sensor. Those dust blower bulbs can remove some dust as long as the compartment is sealed so that dust leaves and does not just move to other areas in the camera. These though,  will not remove very much dust that has strong electrostatic charges almost seeming to glue the dust to the sensor. Try the swab approach as well as cleaning the lens’ rear glass and see if that helps. p.s. Welcome to the forum.

Wow, I never did get to try that! Though, I spent summer '79 exposing and developing astronomical glass plate negatives.