Nitecore Extreme GD+ close up spot

[Archer-Ca]

Hey All.

I'm a noob with a pair of Nitecore GD+ I purchased recently from UniqueTitanium. One is an EX10 and the other a NEX.

I was playing around with both and noticed a slight difference with the spot pattern when up close. I mean really close like around 6".

As you may observe the NEX on the right has a dark spot in the centre where as the EX10 on the left doesn't. I was wondering what the reason might be. At distance both GD+ seem

In low power or high power it seems noticeable. Anyone else notice this with their Nitecore GD+? Any chance it might be some sort of reflection or refraction from the crenelated bezel on the NEX?

Cheers,

Norman

 

[Marduke]

It's a very common thing to see in most LED lights. It's because your hotspot is formed from the light coming off the reflector, which at a certain distance has not had a chance to converge yet.

 

[divine]

Yeah, that's called the donut hole. I've got a couple lights that don't have it, and people seem to say that it means the reflector isn't "perfectly" designed.

I don't know why you need to shine the light directly at something 6" away, and why you would need a perfect beam at that distance. :shrug:

I think it's more of a preference or bragging rights thing.

 

[Archer-Ca]

Thanks for the replies, guys. Yeah, it's not so much that it bothers me but just curious why one shines the way it does compared to the other.

AND I figured out why the NEX has a donut. The battery in my NEX is a bit weaker than the EX10 from usage. That's all. :ironic: I swapped the batteries between the two and then the EX10 was showing a donut. Neato!

Learned a new thing today. On to the next thing....:thumbsup:

Cheers!

Norman

 

[hammerface]

archer - did you used to frequent the knife forums??? A fellow canuck

I think we've chatted before on email in the past about knives...

shoot me a pm if you wanna chat

 

[hammerface]

oh yeah...

:welcome: