That's quite interesting..do you mean you have 2 d40s with different quality finish?
if it uses 18650’s or other lion cells it would be an instant buy for me haha.
AA’s can be quite pricey.
are the enelopes AA just as bright?
I haven't tested it with other batteries.. I don't have regular alkaline to test it with. Sorry. I only use eneloop AA batteries with both the D40A and F40A.
Ceiling bounce gave me the exact same numbers for the D40A and F40A.
Yes eneloops are just as bright as Alkaline batteries but last longer.
Eneloops are just as bright as Lithium Primary batteries and offer similar runtimes and are reusable
I would not use Alkaline batteries with this light, i used duracell procells in my D40a and they lasted half the time of the rechargable eneloops.
While primary Alkaline cells start at a higher voltage 1,5v this drops [droops] quickly as this happens more mAh are drawn from the cells draining the battery quickly and also heating it up which can cause leakage in cheaper cells.
Alkaline batteries for low-draw devices like your wall clocks, radios, smoke detectors, programmable thermostats fine great fantastic medium to high draw they such goat balls.
Also do not forget these are Low Self Discharge, you charge them and they will retain most of there power for extended periods, go google plenty of more knowledgeable people than I have tested and written about them.
Good AA will cost you money just like 18650 Panasonics vs xxxxfires for example, you make your choice and pay for it just like marriage.
Eneloop Pro 2500 mAh rechargable 500 times
Panasonic 3400 mAh rechargable 500 times
Eneloop 2000 mAh rechargable 1500 times, if you can live with having 20% less runtime these offer the greatest value.
edit
Yes, the newer neutral is rougher ie more matte
It grips better, but it’s very very close in finish to the F40
bugger mine the same finish on neutral and warm tint lights