View allAll Photos Tagged Flashlight
I captured this shot by hanging a flashlight from the ceiling with a string, setting my camera on a tripod looking up. I set the camera to BULB, turned off the lights, started the flashlight swinging, and hit the shutter.
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Wenn das Blitzgerät auslöst, wird es hell.
There will be lots of lights when the flash unit is triggered.
Made from a piece of stainless steel from a rear rack strut, a piece of plumber's strapping, and a section of innertube. The 8-LED flashlight cost $4. Extremely sturdy.
Easy to disassemble. Only unscrewing the tail cap is required to replace the single rechargeable Lithium battery cell shown here - a very commonly available 18650 size. All segments are sealed with rubber o-rings to keep water out if riding in heavy rain. The rings at the base of the lamp head are heat sinks to minimize temperature built up from the very hot LED emitter.
Flashlight weight = 185 grams
Decided to take apart a solar powered dynamo flashlight to see whats inside.
Basically what it has is a cheap electric motor (connected to the battery along with some diodes, then a few gears which allow the hand crank to turn the motor and thus generate power.
The solar panel is soldered onto the same traces as the battery and has no diodes
The LED's are not regulated so the brightness will drop along with the voltage (which seems to top out at around 3.5V. There is also no charging circuit so it may be possible to overcharge the battery.
The solar panel does charge the battery but after using the hand crank to bring the battery to 3.4V, aiming a bright lamp at the solar panel yielded no additional voltage even after an hour. (bit it was able to charge the battery enough to give some light after running it down (so it seems that the solar panel no matter what, is not able to fully charge the battery (it would probably need a DC to DC boost module in order to charge the battery fully).
Overall the flashlight is of a decent brightness and can run for around 15-20 minutes before needing a recharge using the hand crank. (Or if you want, you can run it non stop at a low brightness level if you have a bright light source aimed at the solar panel (perfect for if you like using a flashlight in direct sunlight :) )
You just gotta view this one large!
This is the first in what I'm going to call my "flashlight spider" set. So named because the pictures are the result of me walking around at night with a flashlight, finding spiders, then using the light from the flashlight to see enough to get focus. It's not easy balancing a monopod and working a flashlight, but it is loads of fun!
For this shot, I used my Canon 300D with attached tamron 70-300mm 1:2 macro and the Nikon #5T achromat lens.
UV-Flashlight Lumen photogram, in some variations using Agfa Multigrade 10x15 cm pieces of paper
Exposure very short about 1 minute by tracing the object
I started by short exposing a thermo paper negative with a selfie in the middle of the leaf.
The texture of the LEDs looks like it would be delicious. Unfortunately, it doesn't taste as good as it looks.
Day 72 [3-12-2016]
Final adventure. Today marks my final adventure before my Sunday departure back to college to finish off my second semester. In a group consisting of Me, Scott, Teddy, George, Paul, Alex, and Sean, we traveled to the cape to adventure through an abandoned air force base. It was such a beautiful day to explore and the scenery was magnificent. This whole day was beautiful and a perfect way to end my spring break. I love all of my friends so much. It is always hard to say goodbye.
Can't wait to see what the next day brings!