well will try to make an more traditional review of the light since i understand that if the video was funn for me and maybe for you its not that much informative. forgive me the sluggishness in replay but between work, family, changing the house, health problems and all the different things that real life can throw to a man I am having less and less time.
will upload here more photos and schemes and maybe some other videos too if i find it worth it.
main scheme (I try to give the right scale )
(I have deleted something here because I must be really stupid sometime )more photos to come soon.
i will try to explain why i chose a dual lens system and what i gain from this setup.
ok as shown in the diagram above if an single lens with a big focal point is used, the setup suffer from big loses in total lumen output. you see from 180 degree (practically is just a little bit smaller angle than that between 180 and 120 from different type of led ) of emitted light only 50 degree are captured from lens and are used for throw. throw is very good and in my case is very high in the same range with my dual lenses setup but as i said will lose lumen and in a big percentage. how this translate to the beam shape and characteristic? throw will not change, but the beam will be thinner. less lumen it have for the same amount of throw the thinner it will be. generally when you see the beam shape in a wall (setup with lenses) intensity or brightens of the spot IS throw, the total surface of the spot is lumen output of the light generally speaking.
lets see what happen in practice to the beam, in my pure-throw SYRI setup. I make one photo at around ~15 m distance in an almost white wall in minimum level (0.380mA) photo is made with an Fujifilm Finepix S8100 once at 0x zoom and once zoomed.(everything is auto as far as i know )
1. this is a shot with dual lens setup
2. this only with the big lens
the difference is very visible, in both setups throw is pretty much the same, total output change drastically.
the same thing zoomed :
- dual setup
- single setup
take note that the spot with single lens seems bigger than what it looks in reality because camera fail to capture well. I make another comparison to see better the difference at around ~200m distance.
- dual setup 18x optical zoom
- single setup
from photos you can see that the spot in dual lenses setup cover and area ~4 times bigger than single lens setup, this means its 4 time more stronger in total output.
in fact with some measurements i have made syri pure throw is almost equal in output in lumen with my stock convoy m2 (xml @2.8A) this with an single lens is almost impossible to achieve and with lenses I have in my disposal totally impossible.
so pre collimator can not make your setup throw further, but you will gain in lumen, your setup will be smaller, and the beam will be generally more regular.
I make some other photos benefiting from my friend bridge camera and the nice 18x zoom
@200m 18x zoom
the same no zoom(my usual testing place)
I have made the terrible mistake of painting the place around the phosphor with black trying to give the last cosmetic touches to the light. I painted little bit the phosphor, and now every time i chose to play with the light and turn on my pre-collimator condense from the paint material that heat up from the led. the result? and perfectly round beam and strangely enough its little bit more cold tint its very white. i have to open clean and after first use everything is ok as before . Maybe i change again led one of this days …
I have heard some here hate the square beam, well i got it by accident
all photos by the camera :
(this will be updated soon )
another interesting place to test the light (photo by my phone all default settings )
test shot distance ~1km
and Syri pure throw on (unfortunately batteries was not full that day, and the ambient was with a lot of light )