I will take some outdoor shots ASAP. The Emitter is easy to adjust by screwing in or out. I love this light so much. Outside you don't notice any rings. I have an SMO reflector which i quite like although it is not as clean it does throw further. I have the R2 SM and SD pill to compare with both reflector types but prefer the MC-E at the moment as it is just so bright. Seems like more than 500 Lumen to me, i figure with the 2.4a it's nearer 600. Outside it does not heat up as fast as i expected but indoors it is hot after 10 mins but the whole body of the flashlight is hot so heat sinking works.