Why are the pixels of Nikon SLR so low?

On the one hand, it is indeed because Nikon lacks strength in the research and development of photosensitive components and is controlled by others (Sony). Therefore, almost all the previous generation products have 12 million pixels, while Canon models in the same period have reached 18 million pixels.

However, too high a pixel count actually has no benefit in improving image quality. On the contrary, the increase in pixel density will lead to an increase in noise at high sensitivities, resulting in a reduction in image quality. Therefore, the 18-megapixel 550D imaging It’s not better than the 12MP D90, and is actually one level worse. Besides, although 18 million looks like 50% more than 12 million, in fact, the frame size is just a little more peripheral, and 12 million pixels is enough to meet the printing needs of large-size photos, only in the fields of advertising photography, high-quality printing and commercial photo galleries. Only photos with 18 million pixels or higher are needed. Therefore, Nikon's widespread use of 12-megapixel photosensitive elements in its previous generation products is actually related to market positioning and demand.

Not only in SLRs, but also in consumer cameras, there has been a trend of regression in pixel count in the past year. The Canon G10 has a pixel count of up to 14 million, but the image quality is very poor, so the G11 dropped back to 10 million, and the G12 There is no increase in the number of pixels.