Pentax Zoom A 70/210 4

Hello I've bought the famous Pentax Zoom A 70/210 4 but i'm a little bit disapointed because there are pincushion distortions. When I take a picture, for exemple, of a painting, the borders are deformed. Is it normal ? For me it's important because I do a lot of architectural photos. Many

Re: Pentax Zoom A 70/210 4

I've bought the famous Pentax Zoom A 70/210 4 but i'm a little bit disapointed because there are pincushion distortions. When I take a picture, for exemple, of a painting, the borders are deformed. Is it normal ? For me it's important because I do a lot of architectural photos. Olivier