Thanks everyone for your help & comments. These next 2 shots come from 2 very famous Nichia’s in the equally famous Emisar D4V2. Squint your eyes and maybe you could see a slight yellow tint in E21a.
Do you have a preference for one over the other? I believe a few flashaholics have wanted to know the difference between these 2 LED’s, and here they are fully exposed on the Wall of Truth 
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Note that E21a comes with frosted optic which makes it look dimmer.
When you replace with clear optic brightness improves but now there is a yellowish green ring in the beam.
