How does the iPhone 6s camera compare to every Apple smartphone before it?

Thinking of buying an iPhone 6s or 6s Plus? If photographic quality matters to you, check this out first.

Camera+ founder Lisa Bettany does her annual "ultimate comparison" post with Apple's latest iPhone, the 6S.

In the past eight years, each new advancement in iPhone camera technology has made dramatic improvements to image quality. The new 12-megapixel iPhone 6s iSight camera is no exception. With 50% more megapixels than the last four iPhone 8-megapixel models, the iPhone 6s boasts a number of key improvements including: improved auto-focus, local tone-mapping, noise reduction, and colour separation, with that fancy deep trench isolation technology Apple is raving about.

In this follow-up post to my previous iPhone comparisons, I present a 9 iPhone comparison from all iPhone versions taken with Camera+ including: the original iPhone, iPhone 3G, iPhone 3Gs, iPhone 4, iPhone 4s, iPhone 5, iPhone 5s, iPhone 6, and the new iPhone 6s, in a variety of real-life situations to test each iPhone cameras capabilities.

The ultimate iPhone camera comparison: How does the iPhone 6s camera compare to every other iPhone generation? [snapsnapsnap]