Nokia’s choice of using a dual LED flash instead of a Xenon flash has always been a heavily commented topic with many Nokia users. The use of a Xenon flash was only present in the Nokia N82, which remains to this day to be arguably one of the best all-around cameras on a phone. Nokia fanatics were highly anticipating the return of a Xenon flash on the 8 megapixel loaded Nokia N86, only to be let down when Nokia announced that it would be using dual LED technology. In light of this, the dual LEDs on the N86 are powerful. From various mobile reviews, the quality of photographs shot in the dark with the N86 are respectively comparable to the Xenon loaded N82. 
According to Nokia’s photographic expert, Damian Dinning, the Nokia N86 was designed to excel in two fundamental imaging setups: an increased size of the aperture, and an highly refined light sensor. 
Dinning states that photographers will know that the bigger the aperture, the more light is allowed into the sensor and so the easier it is to capture low light images. Equally, variable aperture size means the camera is just as effective when light is in abundance. The second key difference lies in the sensor. Much more sensitive than any previous sensors in mobile devices it is capable of handling more detailed, and defined, image capture. Again, this is a huge benefit in low light where flash-assisted images can suffer with an increase in noise (those speckles you see in some images shot indoors).
Ultimately, Nokia went with the decision to use dual LED’s because they feared that the extra “bulk” due to the Xenon flash would interfere the N86’s overall look and feel. I believe most Nokia fans wouldn’t mind that added bulk if it meant that they had a Xenon flash on their device. Nokia should really have a poll or petition for these features on their future models.
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