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 thanks for any help. Olivier. Pentax Zoom A 70/210 4 but o'
