Thanks for your input as always TK! I was not aware of the history of AR coatings Hank has used on his lights, but I have heard recent reports that a KR1 lens was responsible for a +0.0015 duv shift. While this isn’t Olight levels of bad, it still leaves a bit to be desired.
I do agree that his coatings are definitely top tier. I haven’t ever noticed the high angle colored artifacts like Convoy (magenta) or Eagletac (blue) lenses have.
It is apparent that both the D18 and K1 are still reflecting predominantly golden>orange>rose colored wavelengths. If this could be changed to green I still think this would be better.
Pursuit of perfection!
Lastly, I also prefer ultra clear (low iron) uncoated glass for hiCRI lights. I wasn’t aware Hank offered uncoated glass already.
I measured several recent lenses with my spectrophotometer and got arround +0.0010~+0.0015.
An old D4S lens was ~+0.0030.
So yes there was an improvement, but it should be possible to get even better AR coatings. Djozz showed measurements of a lens with green reflecting AR coating (or rather it’s just that the AR is more effective on the blue and red ranges, since the point of an AR coating is to increase overall transmission)
Preferably the lens should not affect the tint or if it does, decrease duv (less green, could be even better), a quality plain lens does that cheaply, with some transmission losses vs AR coated lenses. The best would be an AR coated less that allows max transmission with good tint, I guess it depends what your suppliers can do and at what price, although the flashlight with green reflecting lens Djozz tested above is a cheap one.
Hank is it possible to have a lighted switch both on your new thrower and the upgraded D4Sv2? New hardware and firmware for it is great, but adding a lighted switch and premium metals options would be the cherry on top.
Given that Lumintop have managed to screw up the FW1A yet again, it would fantastic if Hank could produce a mini-Noctigon KR1, same build quality, 18650, tail switch, but with a more pocketable 25-27mm head.
It is not normal, I have sent you an email for phone number 2 months ago, there is still no reply yet, please reply to the email with phone number, so that we can send your order via FedEx asap.
On the other head, it’s more efficient to send us an email if you have any issue, we will reply you within 24 hours time frame.
For the FedEx shipping, it always requires phone number and street address instead of P.O box, otherwise the order can not be shipped.
Usually, we will send several emails to ask for the phone number, and sometims the emails may go into the junk mail box, and we do not get any reply from the customers, then this order will be stuck there as long as it takes, until the customer contacts us.
