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Continuing to explore B&W imaging along the cote d'Azur.
Technically I've found that moving Zone 6 as Sony sensors record it and creating an input correction curve post-demosaic that lowers it to Zone 5 sets the kind of deep tones I'm looking for.
As a side note: Sony sensors are very very quiet in the shadow regions. There is so much usable information deep into the -EV range.
When "testers" and commenters across the internet make claims about dynamic range I see what they report to be 1 to 2 stops narrower dynamic range than what I see. The difference is that I rise the mid-tones in my Digital Zone System luminosity curves to match 0EV to Zone 5, which, it turns out, usefully raises the shadows down to 020202hex - where I take things to be pure black (I can't see any difference between 000000hex and 0202020hex on my displays).
My Sony A7 can record 14.5EV to 15EV of usable f-stop range. Yes. It's true. Same with an A6300 that I have. The A6000, NEX-7, NEX-5T, and A5000 all record just about 14EV dynamic range.
The A7RII I recently picked up looks like it's good for between 14EV and 14.5EV. This surprised me as I thought backside illumination might set a more solid base noise level. Perhaps it's all those pixels or the way they set the analog to digital converters?
In any event, I would really like to try a Sony A7S (original model) to see how it does. Anyone have one and have a few minutes to record some RAW data for me? Or loan me for 10 minutes so I could run my input correction curve calculations? These cameras are getting cheap enough that I might even be able to buy a used copy myself. I'll be keeping my eyes peeled for one.
If we learned anything at CES this past January, it’s that sensors are pervasive in every new cool tech getting to market these days. And health is definitely leading the way in this sensor proliferation. Constant tracking and monitoring through interconnected devices opens up unlimited possibilities for disease management and prevention leading up to new and remarkable business opportunities. Get the ins-and-outs of how these sensors can play to both individuals and enterprises and what companies are now doing with all of this data.
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Bourns 3382H-1-103 continuous rotation position sensor (10K potentiometer). This part can be purchased from DigiKey for $1.98 each. The nominal specified adjustment angle is 330 degrees. While not currently guaranteed beyond 330 degrees, the part I purchased provides 345 degrees of control. I've contacted Bourns for a minimum / maximum rotation spec. They are in the process of characterizing the part for this and will post the results soon in an updated online datasheet.
Bournes website: www.bourns.com/data/global/pdfs/3382.pdf
DigiKey website: www.digikey.com (part number 3382H-1-103-ND).
Additional Information: dkc1.digikey.com/us/en/tod/Bourns/3382RotaryPositionSenso...
Despite its formidable armament, the Drifter remains primarily a research and scientific vessel, and sports a wide variety of sensors and gadgetry whose operation would bore to tears the average bystander.
The Drifter's main hull is draped with a protective layer of a composite ceramic ablative armor, which is designed to boil off into a harmless vapor on high energy impacts, such as mass drivers. While offering a fair degree of protection, the armor itself is high maintenance, and must be replaced at dock when damaged.
The ship also sports a gravitational diffusion field generator, which provides ample protection against most threats, but interferes greatly with the operation of the extremely sensitive precision scanning equipment, and most crews don't ever bother turning it on unless significantly outgunned.
The old wiper fluid level sensor was broken-after much searching I was able to find this new one of an improved style GM started using mid/late model year 1984. It seems way more durable than the original, seen on the right
Race technology Hall effect sensor. It picks up the bolt heads on the propshaft and sends a pulse to the dash. It's quite easy to setup as the led on the back goes out when it senses the bolt head.
Blue boxes show the relative sizes of different common sensor formats. Much is made of the performance improvements from so-called 1/1.7" format sensors, but relatively speaking they are still tiny.
The sensor board and the battery pack barely overlap within the tube, so access to the serial port on one end and the battery pack on the other end is easy.
Sensor size isn't the only variable between these cameras, but it's a big one. I did this test when I got the Sony for underwater shooting.
All five examples are 100% crops taken at ISO 400 and at F4 when the camera allowed me to specify. Light was fairly weak, so all shots were done on a tripod. Shutter times were from 1/8 to 1/30 second.
I used in-camera jpegs (the only option on several of these) and adjusted the color balance with a "WhiBal" card.
Sensors, square mm
Canon SX230: 28
Canon D10: 28
Samsung Note 3: 17
Sony RX100 III: 116
Canon 5D III: 864
SENSOR SYSTEM
MYSTICAL COMPUTER ENVIRONMENTS
A Mystical, interactive, aesthetic, computer experience.
The Sensor System was used as part of Padgett’s artist-in-residency at Loughborough University with the C&CRS for COSTART, partly funded by the EPSRC Grant GR/M14517 Studies of Computer Support for Creative Work, Artists and Technologists in Collaboration.
8 sensors are located on each side of a 365cm x 365cm frame at 30cm high. The frame is in front of a screen 245cm wide and 180cm high. One person rotates the shape and chooses the colour, one person walks in the frame and extrudes smaller basic shapes.
When people move in the installation squares are generated in the axis they move. Rotation is added and intergalactic patterns result.
This interactive work breaks down the subject/object dualisms as the participant is also the work. Participants move around a sensor system to produce moving abstract designs that are purely aesthetic and join 2D design with a 3D, mystical, inner space.
Con el objetivo de anticiparse a los requerimientos de las compañías suministradoras de agua potable.
Hamlin, empresa representada en España por Anatronic, S.A., ha introducido un nuevo sensor compatible con la mayoría de contadores de agua.
El sensor de contador de agua bidireccional, que se presenta en un novedoso encapsulado, permite la actualización de contadores mecánicos existentes mediante un contador de pulso con un coste estimado de menos de 10 euros por vivienda.
Este nuevo modelo hace posible una medición remota y automatizada en lugar de la lectura “manual” lo que conlleva un aumento de la precisión y un ahorro significativo de costes.
Además, este sensor, con un diseño a prueba de manipulación no autorizada, ayuda a identificar “contracorriente” (backflow) y cumplir con las nuevas normativas internacionales.
Por lo tanto, el Bi-Directional Water Meter Sensor, que se puede instalar fácilmente en cualquier tipo de contador de agua, contribuye a mejorar la calidad y la disponibilidad de los datos de medición.
This is an image taken with f32 after I tried to remove any dust from the sensor. The red circles are the dust particles which were not removed after a few blows with a Giotto's air rocket. The green once show that there is no dust anymore...