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photo attribution: sean dreilinger durak.org
Chris Berka: Lighting up
Chris Berka is CEO and co-founder of Advanced Brain Monitoring (ABM),
a San Diego-based company that develops wearable sensors leveraging
the lightest, most portable, and least invasive technology possible for capturing electroencephalogram (EEG) data, both in clinical and real-world environments. Berka has more than 25 years of experience managing clinical research and developing new technologies and is a pioneer in the field of accelerated human learning. Her work and research has shown applications for improved sleep, PTSD recovery, leadership, and military training on contracts and grants for the National Institutes of Health, National Science Foundation, Defense Advanced Research Projects Agency, and Office of Naval Research.
Esto es lo que se ve al hacer una foto de prueba para sacar a la luz las manchas y guarrerías que hay sobre el sensor de mi cámara... Antes o después tocará limpiarlo... Pero entre que me da miedo, que al hacer las fotos generalmente no se aprecia nada, y que me da pereza...
El día menos pensado lo hago...
I really need to clean the sensor in my D600!
This is image number 5548. To be honest, in 'normal' photos, only the largest of the dust/dirt/oil spots are visible and need editing out. I have never done this with either of the two DSLRs I have owned before so I don't know if this is particularly bad or perfectively normal for over five and a half thousand shots.
I got this by pointing my camera at a patch of blue sky, focusing as close as possible and stopping down to f/22. In the tone curve panel in Lightroom, pull the 3/4 point in the curve (probably the wrong terminology) right down to the bottom and all that dirt is revealed.
RE_BEAM ROBOTS: Taller de construcción de robots
01.03.2014 12:00h - 16:30h
Lugar: Lab (1º planta / 1st Floor)
Taller de iniciación para la construcción de robots capaces de seguir la luz, utilizando en lo posible materiales reciclados (motores y sensores de viejos juguetes, aparatos, etc.) a partir de conceptos que electrónica analógica.
专业,开发,生产,时间继电器,24小时定时器,计时器,计数器,液面控制器,相序保护器,光电开关,接近开关,电机调速器,电机保护器,相关配套产品,OEM
timer,Timer Relay,24h Timer,Relay,Digital Timer,Sensor,Counter,Protective Relay,Level Switch,Sockets,proximity switch,photoelectric switch,solid state relay,switch power supply,Accessories,OEM
timer relay,24h timer,relay,counter,timer switch,slckets,proximity switch,photoelectric switch
After I installed the sensors in the weatherstation: humidity, temperature and air pressure. Fixed to the inside of the weatherstation with tiewraps, cables through the wall.
On May 7th, with Kon-Hyong Kim and Muhammad Hafiz Wan Rosli introducing % implementing the SINUNI - sensor system
I
finally, after owning this camera for 2.5 years I had the sensor cleaned.
after our little beach trip last week and shooting into the sun at f/22 I realized how dirty it was. now it's all squeaky clean thanks to the folks at ritz.
This shot shows - well it is processed a lot different from the previous one - how much cleaner my sensor is. I went to get a cleaning kit, which I did, and while at the shop they used one of those static brushes on my sensor. I think I will now wait until I need to before using the kit. If you look very closely you will actually still find some debris but not much.
After several trips to Las Vegas, I finally made it to Hoover Dam.
- Engineering: awesome
- Art deco details: awesome
- Dam tour (the longer, more expensive tour): worth it
Right there on the floor, where dozens of groups of dozens of people walk past? The warning seems pointless.
Test of a vintage Olympus OM 55mm F 1.2 Auto-S G.Zuiko prime lens at closest focus distance for different apertures.
Focus is on the figure's eyes.
Shot on a Kolarivision Modified Ultra Thin Filter Canon RP full frame camera.
The ultra thin filter limits the effect of digital sensor glass at the periphery of the frame, thus gives a better idea of the lens original performance on film.
The Bottom Bracket Torque Sensor outputs a voltage signal. The signal and the pedal force is linear proportional. Pedal force increases every 10kg, 0.15V voltage changed. The detectable maximum pedal force is 60kg. The input signals into sine wave with the crank angle. The outputs in 0° and 180° are zero. Maximum output is in 90° and 270°. Each rotation of 11.25°, the Bottom Bracket Torque Sensor outputs a speed signal. The shaft rotates a circle with 32 speed signal output.
Product advantages
The advantages include faster start and quicker response. No more temperature drift issue with high reliability in low temperature. Compatibility with standard bottom brackets, more easy to install and flexible length options, custom dimension and compatible with mid-drive motor.
Read the article: extraenergy.org/main.php?language=en&category=&su...
What I first thought were stars I'm now realizing are dead pixels on my sensor. Time to get a new camera.
Anyone wanting to try this should give it a whirl...heee.
To make the sparks you just get a large metal kitchen whisk and fill the inside with extra fine steel wool. Tie a rope to the end of the whisk handle. Light the steel wool on fire, hold onto the end of the rope and start spinning. Best to be wearing some coveralls and a hat or old hoodie to keep the sparks off your skin and hair.
Make sure your knot is secure and that if you tied it to a lanyard on the whisk that the lanyard is well attached to the whisk, you have to spin pretty fast and mine went flying a couple times.
If you want a picture set up on a tripod, go manual with a long (I was at 15 seconds) exposure and a smallish aperture so you don't have to worry about focus too much, I was at F8. Use a timer or remote to trigger the shot.
This acrylic stuff isn't hard to work with, but it's not easy to get a really spiffy clear shine on. I used a cloth wheel (dug in a bit and heated up) and 600 grit sandpaper wet. That turned out to be the best, but a big fluffy wheel would have put a totally clear finish on it. No time for that now!
...de la M8, un Kodak KAF-10500, ahora limpito.
Se observa que la apertura del obturador (procedente de una cámara full-frame, la R9... de película) deja ver la circuitería que rodea la matriz de fotodetectores, lo que causa a veces curiosos fenómenos...
Knobbed cylinder variation. A straw is placed into a hole and the child finds the cylinder to go in the hole.
ROHM Semiconductor & ROHM Group companies, OKI SEMICONDUCTOR & Kionix exhibiting at Sensors Expo in Rosemont, Illinois, June 2011.
Image processing, motion sensing, bio sensing, wireless network technology, and human interface sensors were shown.
A 100-watt CO2 laser is shown here (the section glowing in blue) melting and transforming a rod of alumina into a pure sapphire optical fiber. A pair of telocentric lenses with machine vision cameras control the movement rate of the feedstock and fiber, and after many hours of automatic machine-operation, a long continuous piece of sapphire optical fiber can be formed. Such a fiber is one of the more durable materials on the planet, able to withstand temperatures as high as 1,800 degrees Celsius. The glowing pink section is a helium-neon laser which is a component of the laser Heated Pedestal Growth System. It is a visible red laser that is aligned to co-propagate along with an invisible 10.6um CO2 laser beam. The red laser then helps operators to locate and align the invisible laser beam.
Fell behind on these. The EXIF on this shows it was taken on 01-Jun-2013 and adds a tiny bit more crud on the sensor from the last one. You'll have to look pretty hard to see the new spots, though.
Shutter actuations are at 5,065, so you don't have to go hunting the EXIF for it.
i finally got up the courage to clean my sensor. i think it worked out pretty well. top left is "before", top right is after the first cleaning and the bottom image is after i cleaned it again.
i used a swab made by microtools. they are not as lint free as they say and the size was a little off (which was annoying b/c the exact size thing was the whole reason i didn't just make my own swab), but it worked very well.
cleaning your own sensor is pretty easy, but if you damage the sensor, it can cost almost as much as a new camera to repair it, so beware.
ROHM Semiconductor & ROHM Group companies, OKI SEMICONDUCTOR & Kionix exhibiting at Sensors Expo in Rosemont, Illinois, June 2011.
Image processing, motion sensing, bio sensing, wireless network technology, and human interface sensors were shown.
Here is a shot of the external dual sensor box. The sensors are set up to line up nearly at the edges of a 35mm SLR film window.
A small switch on the back selects which pair is used for making measurements. In this way curtain shutters that move vertically or horizontally can be measured.
After looking at the sensor for a professional shutter tester, I may make those round holes slits instead.
This complicates the light source, in that it needs to be much more direct, and not just diffused light.