I been watching some flashlight reviews on YouTube and notice that David Sunshine test the flicker of the flashlight’s.
I been reading many reviews here but never seen you guys test the flicker.
I think it gives some good information about how the driver performs and if the flashlight is going to give you headache or tired eyes if it flickers (that’s what I have been reading here about noticeable pwm).
Just think it’s a good app to have checking your flashlights for reviews or to test new drivers.
The app is available for android and iPhone but I didn’t get it to work on my android phone (just said “not enough light”) but on my wife’s iPhone 6 it works great. (She is probably going to get crazy when I borrow her phone alot now)
To get the screenshot over to my phone I just press save and click on Facebook messenger and send it to me and I got it.
Search for “Flicker tester” at app store.
Link to official page with some info how the calculate stuff and so on: http://www.visosystems.com/products/flicker-tester/
Picture:
Check this video at 9:00 and he explains alittle bit about it.
Video:
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The question is: is it accurate straight from the app store or do I need to calibrate it?
I think the calibration only apply for the Hz and not the flicker index or the flicker % since those numbers are calculated from one cycle.
From the figure: Percent flicker = 100 x (A – B)/(A + B)
Flicker index = Area 1/Area 1 + Area 2
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Edit: it seems they have fixed the app for android phones now.