Please recommend a cost-effective indoor portrait ultra-wide lens (suitable for Nikon D90).

Bear with it, buy it if you have money 14-24? 2.8. Now you may not be satisfied with spending ordinary money on other ultra-wide products, but you will always think of 14 psychologically. 24~~~

14? 24? 2.8 As one of the three major elements, Nikon Wide-angle Mirror Emperor has absolutely nothing to say about its image quality! The constant aperture of 2.8 also ensures the realization of indoor shooting when the light is poor, and the Jiao Wai can be blurred appropriately, so the portrait can be very soft!