People familiar with the matter have told AppleInside that Apple will likely focus more on increasing image quality than increasing megapixels with the iPhone 6.
The overall image quality will see improvements in other image-enhancing areas, most likely by fine tuning optics to allow for greater light transmission. Another improvement could be made by increasing each pixel’s size to make the sensor gather more light, and hence shorten the needed shutter time, and eventually fighting against motion blur.
Given earlier rumors that Apple’s iPhone 6 will be only 0.22-inches thick, it’s not surprising that the megapixels won’t increase from last year’s model. A larger sensor and better optics would require a thicker shell, especially if Apple was to implement image stabilisation.
Most of today’s flagships feature 13MP+ image sensors, with the current megapixel crown going to the Nokia Lumia 1020 with a 41-megapixel sensor. How long do you think that Apple can keep on going with an 8-megapixel sensor when the competition is rocking a minimum of 13-megapixels?