Can you visually tell which optics leds have?

[davidinga]

I got some eBay boxes that were sold with 90 degree optics but I'm pretty sure they are 60's due to the spotlighting I see vs my other actual 90 degree optics leds I have. Is there anyway to visually tell what optics they really have?

 

[genesis]

Tagging along, curious as well?

 

[russ-iv]

how high are they hung? take a cell pic with the red channels on vs the blues. itll show the degree

mine are 60s