Nikon 50- 1.8d lens or 50- 1.4d lens Jiao Wai, which effect is better? Match d90

There are posts comparing these two shots on the Infinite Forum, and there are also posts comparing 1.4D and 1.8d faculae. ..

As a cheap lens, 50/ 1.8D has the problem of out-of-focus bilinear, and the aperture will be very obvious when F 1.8~2.8; In contrast, 1.4D has almost no bilinear problem from the maximum aperture.

Therefore, if you want to pursue the softer and more blurred effect of Jiao Wai, 1.4D is worth changing.

But in fact, the lens is just a device. Although 1.8D is bilinear, many people can actually use it to create a beautiful Jiao Wai. So this is not absolutely good, the difference lies in how the photographer should handle the equipment in his hand, and foster strengths and avoid weaknesses.

Whether it is necessary or not depends on your needs. You don't think 1.8D can meet your needs, which is the reason for changing the lens. How much can you tolerate the performance of 1.8D? It is so necessary to change the lens.

As for the out-of-focus problem, it should be checked before the first purchase, and the focal length can be fine-tuned after the next day.