I own a Sony a6000 and recently upgraded the kit lens (10-50) for an 18-200mm lens. The problem I face is that at the right part of the photos, mostly on wide angle, the photo is very blurry compared to the left part. I attached some photos so that you can see for yourselves. I did even clean the lens and the sensor. I have to say that the kit lens doesn't produce the same blur even though it is a bit blurry also. Is it something from the lens or from the camera sensor? Any help is appreciated

I own a Sony a6000 and recently upgraded the kit lens (10-50) for an 18-200mm lens. The problem I face is that at the right part of the photos, mostly on wide angle, the photo is very blurry compared to the left part. I attached some photos so that you can see for yourselves. I did even clean the lens and the sensor. I have to say that the kit lens doesn't produce the same blur even though it is a bit blurry also. Is it something from the lens or from the camera sensor? Any help is appreciated

Later edit: Here are some comparison photos. First one is with the kit lens, second with the zoom lens. You can clearly see the right part of the photo is messed up.

Both of them taken at f 5.6, 32mm ,ISO 100. BTW reviews say that f5.6 is recommended at 18-50 mm on the zoom lens.

Meanwhile I got my hands on a brand new zoom lens same type as mine and look at the difference. The right part is much much better in terms of blur. Same settings.

So hopefully they let me keep this one.