Nokia consequently improved on the 808 with the Lumia 1020 in 2013. The camera on the 1020 could match and possibly even out-perform cameras on many phones on the market today. Although the specs included a smaller 41.3 MP 1/1.5 inch sensor than the 808, it supported backside illumination, optical image stabilisation and lossless zoom which improved its overall performance. The PD-95G camera grip gave the 1020 the feel of a mini-DSLR, which was further enhanced by RAW support and an incredible interface with manual control. It was a truly impressive piece of kit, but it did have one major drawback when it came to exposure photography. When the 1020 was used to freeze motion with the Xenon flash, it would frequently overheat to the point where the camera software would shut down. This also happened when repeated long exposure shots were taken for light trail photography.
Getting to grips with the SDK of the new OS platform was also a bit of a ballache too!
By the time the 1020 was released, Nokia was rapidly losing its market share to Android and iOS-based phones. Although the Windows Phone operating system on the 1020 was an improvement on the discontinued Symbian OS, the lack of app support and development affected popularity. However, the many innovations that Nokia introduced to smartphone camera technology helped to make camera specs one of the main motivational drivers behind new phone purchases and upgrades.
With the demise of Symbian and the crappiness of Windows Phone OS, I made the switched to Android. It features the root access modification abilities of the former, but also a level of app support that the latter could not match.
Even though smartphone photography has its limitations, these phones, particularly the Nokia ones made transitioning to a DSLR so much easier.
For more long exposure photography, feel free to check out my astrophotography and NEOWISE sections.