I have many flare samples coming from various lens, first the green one that looks like yous and some red ones in sunset time.
From tokina 19-35 f/3.5-4.5
(without lens hood & filter)
It is embarrassing to say the least. And it seems that I have less after getting a lens hood for my Tokina but I have not gotten the lens hood for all of my other manual lens. The green seems to come from internal reflection form the sensor plate and probably the digital designed lens will have less due to perhaps better coating on the rear end. Not all of my film lens have those and I think a lens hood will be first thing that I will attempt to test on the same lens in the same setting.
Thanks,
Hin