670nm deep red led helps eyesight

[jon_slider]

@Hikelite

@jon_slider

So I modded this Titanium beauty, and Im shining it at my stubbed toe…

This looks clearly like a 620nm, because of the orange-yellow center
Deeper reds like 660nm have more magenta there than orange-yellow.
That is a bit of a rule of thumb do differentiate between reds with the eyes.

you have very well trained eyes, and are absolutely correct

I received a comparison photo
thanks to Andy Zhu