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Coming in the front entrance and hanging a left down the first aisle (at least, I *think* this is the very first aisle), this is the view one would encounter. I kind of like those big overhead signs, but I feel certain the style as seen here is going to be changing, at least a little bit...
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Sam's Club, 2000-01 built, Goodman Rd. at Elmore Rd., Southaven MS
An Illustration for the article:
www.akelstudio.com/blog/leica-x1-vs-fuji-x100-two-hi-end-...
One light source (E640 with barndoors) directly on top, 2 white reflectors on both sides to kill shadows.
LG전자 모델이 13.3형 화면에도 무게가 테이크 아웃 커피 두잔 정도인 980그램(g)에 불과한 초경량 울트라PC '그램'과 일체형PC, 탭북 등을 선보이고 있다.
※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다.
En Octubre de 2010, la firma austríaca impulsora de la Lomografía presentó en la Photokina de Colonia la Sprocket Rocket. Se trata de una interesante cámara compacta de base plástica cuyo diseño, muy vintage, recuerda las cámaras de baquelita que al termino de la Segunda Guerra Mundial produjo la Seymour y muy especialmente a la Dick Tracy.
No obstante, la singularidad de esta respecto a cámaras del mismo fabricante como "La Sardina" reside en las posibilidades que ofrece a los seguidores de esta corriente de “fotografía analógica” para que puedan dar rienda suelta a su creatividad.
En este sentido cabe resaltar que, si bien utiliza el formato convencional de los 35mm, emplea una lente gran angular de 35mm que permite exponer todo el ancho de la película (72x33mm), consiguiendo 18 fotografías en un rollo de 36, de manera tal que las imágenes panorámicas que se obtienen muestran incluso las perforaciones que posee el negativo para guiar su arrastre.
Por otra parte, dispone de un curioso sistema de engranaje inverso para que la rueda de arrastre pueda accionarse no solo para avanzar la película sino también para retroceder y posibilitar multiples exposiciones sobre el mismo fotograma.
El resto de los detalles técnicos se pueden resumir en que su obturador puede funcionar con velocidad de 1/100s o en modo bulbo para exposiciones largas o nocturnas y el diafragma tiene aperturas de f/10 y f/16, disponiendo su óptica de un enfoque en rangos de 0,6m hasta infinito. Igualmente, posee una zapata a la que se puede conectar un flash y una rosca inferior para trípodes estándar.
En definitiva, otra cámara generada por el mundo lomográfico que evidentemente es todo un deleíte para aquellos que buscan expresar su creatividad fotográfica o simplemente experimentar para ver que sale, si además se compran una máscara de digitalización, pues miel sobre hojuelas, la diversión es completa.
Store closed January 2018
Austintown, OH. February 2017.
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Electronics Hobby
From Wikipedia, the free encyclopedia
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"Power amplifier" redirects here. It is not to be confused with RF power amplifier.
Mission Cyrus 1 Hi Fi integrated audio amplifier (1984) [1]
An audio power amplifier is an electronic amplifier that amplifies low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a typical audio playback chain.
The preceding stages in such a chain are low power audio amplifiers which perform tasks like pre-amplification, equalization, tone control, mixing/effects, or audio sources like record players, CD players, and cassette players. Most audio power amplifiers require these low-level inputs to adhere to line levels.
While the input signal to an audio power amplifier may measure only a few hundred microwatts, its output may be tens, hundreds, or thousands of watts
en.wikipedia.org/wiki/Audio_power_amplifier
History[edit]
Three audio power amplifiers
The audio amplifier was invented in 1909 by Lee De Forest when he invented the triode vacuum tube. The triode was a three terminal device with a control grid that can modulate the flow of electrons from the filament to the plate. The triode vacuum amplifier was used to make the first AM radio.[2]
Early audio power amplifiers were based on vacuum tubes (also known as valves), and some of these achieved notably high quality (e.g., the Williamson amplifier of 1947-9). Most modern audio amplifiers are based on solid state devices (transistors such as BJTs, FETs and MOSFETs), but there are still some who prefer tube-based amplifiers, and the valve sound. Audio power amplifiers based on transistors became practical with the wide availability of inexpensive transistors in the late 1960s.
Design parameters[edit]
Key design parameters for audio power amplifiers are frequency response, gain, noise, and distortion. These are interdependent; increasing gain often leads to undesirable increases in noise and distortion. While negative feedback actually reduces the gain, it also reduces distortion. Most audio amplifiers are linear amplifiers operating in class AB.
Further developments in amplifier design[edit]
For some years following the introduction of solid state amplifiers, their perceived sound did not have the excellent audio quality of the best valve amplifiers (see valve audio amplifier). This led audiophiles to believe that valve sound had an intrinsic quality due to the vacuum tube technology itself. In 1972, Matti Otala demonstrated the origin of a previously unobserved form of distortion: transient intermodulation distortion (TIM), also called slew rate distortion. TIM distortion was found to occur during very rapid increases in amplifier output voltage.[3] TIM did not appear at steady state sine tone measurements, helping to hide it from design engineers prior to 1972. Problems with TIM distortion stem from reduced open loop frequency response of solid state amplifiers. Further works of Otala and other authors found the solution for TIM distortion, including increasing slew rate, decreasing preamp frequency bandwidth, and the insertion of a lag compensation circuit in the input stage of the amplifier.[4][5][6] In high quality modern amplifiers the open loop response is at least 20 kHz, canceling TIM distortion. However, TIM distortion is still present in most low price home quality power amplifiers.[citation needed]
The next step in advanced design was the Baxandall Theorem, created by Peter Baxandall in England.[7] This theorem introduced the concept of comparing the ratio between the input distortion and the output distortion of an amplifier. This new idea helped audio design engineers to better evaluate the distortion processes within an amplifier.
Store closed summer 2017
Charlottesville, VA. May 2017.
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Minolta è uno dei marchi storici della fotografia e l'eccellenza dei suoi prodotti non ha bisogno alcuna presentazione. Anche se negli ultimi anni l'avvento dei colossi dell'elettronica (Sony, Panasonic, Samsung) ha cacciato dal mercato quasi tutti i nomi storici della fotografia, gli appassionati della vera arte fotografica conservano gelosamente le loro fotocamere Minolta analogiche e sempre più collezionisti sono attratti dalla qualità delle ottiche e dalla precisione dei corpi macchina di questo costruttore.
La XG-M puó essere considerata l'ultima evoluzione della XG-2, un modello storico di casa Minolta. La variaziona più significativa della XG-M fu di modificare leggermente il design del corpo macchina e l'aggiungere una guancia in plastica per facilitarne l'impugnatura. Lo styling divenne cosí molto simile a quello della X-700 e sará il capostipite di tutte le Minolta susseguenti. Anche il nuovo logo della società, il sole che sorge, fu utilizzato per la prima volta proprio a partire da questo modello, ma il cambiamento più importante fu la capacità di utilizzare il nuovo e più veloce Motor Drive 1 grazie ad una meccanica piú robusta e la lettera "M" nel logo indica proprio questa facoltá. Un altro miglioramento significativo nella XG - M fu anche il nuovo rivestimento in similpelle non piú soggetto al restringimento, ma il piú importante di tutti fu finalmente la possibilitá di controllare l'esposizione anche in manuale, cosa prima non possibile possibile.
In quest'ultimo caso l'utente seleziona l'apertura diaframma e la macchina sceglie il tempo di scatto più opportuno ma una serie di indicatori a led visibili nel mirino accanto alla scala dei tempi indica il valore impostato e di quello suggerito dall'esposimetro.
Come tutte le XG anche la M é dotata del sistema "Touch Switch" che utilizza la conduttibilitá della pelle per attivare l'esposimetro che ritornava in "Stand-by" dopo pochi secondi finchè non si sfiorando nuovamente il pulsante di scatto si riattivano tutte le funzioni.
La MINOLTA XG-M è una reflex dalla linea ancora molto gradevole e moderna, e che al di là dell'estetica é un modello molto versatile grazie alla possibilitá di funzionare sia in modalità completamente manuale che semi-automatica a priorità di diaframmi. In quest'ultimo caso l'utente seleziona l'apertura diaframma e la macchina sceglie il tempo di scatto più opportuno, oltre a ció é visibile anche il simbolo di pronto flash.
La dotazione tecnica è ancora oggi di tutto rispetto:
- Obiettivo Minolta MD con focale 50mm
- Diaframma a iride con aperture da f/1.7 a f/16
- Otturatore sul piano focale controllato elettronicamente, con tendine in tessuto a scorrimento orizzontale e tempi di scatto da 1sec. a 1/1.000sec più la posa B
- Esposimetro con lettura di tipo TTL e sensibilità ISO da 12-6400
- Selettore di compensazione dell'esposizione con intervallo +/- 2EV
- Autoscatto elettronico con ritardo di 10 secondi, disinseribile manualmente
- Baionetta di tipo Minolta SR
- Alimentazione con due pile LR44 o SR44
Questo modello, grazie alla sua qualità e versatilità divenne una delle piú facili fotocamere analogiche da utilizzare e di fatto il modello di punta della serie Minolta XG, tanto che la sua discedenza é riconducibile fino alla Minolta X-370 che, dopo l'uscita di produzione nel 1990, continuó ad essere costruita in Cina dalla Seagull e venduta in tutto il mondo fino al 2005 come Minolta X-370s. Ancora oggi possibile acquistarla sotto diversi marchi ed é una delle ultime fotocamere reflex analogiche e con messa a fuoco manuale.
I just got my nikon d40 today!! so far its the coolest camera ive had yet. Expect to see alot more pics from me soon!
*3/17/08 just recently found out that this made explore the day i uploaded it and it got up to #188! sweet :)
This is what a notebook computer looks like in 2013. It's more commonly referred to as a notebook than a laptop. The first computer that I could remember was an Intel 386 back in the late 80's in Hong Kong. I've seen the explosion of the Internet along with the rise and fall of the phone line modems peaking at 56k speeds. I remember 13 years ago when AMD broke the 1GHz barrier with their Athlon. There was a time when CPU's could just be passively cooled. The emergence of wireless Ethernet was at times painful, but welcomed. This little machine with a diagonal of 11.6" no thicker than an inch is definitely more powerful than anything that I've cobbled together with parts. Quite nice to have so much computing power in a rather small package. The next technology improvement that I'm really looking forward to is for the widespread adoption of 300dpi LCD screens.
Store will be closing early April 2018
Rutland, VT. October 2016.
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My recently purchased Sigma EX Aspherical 17-35mm f/2.8-4 lens for my Maxxum 5D.
Here is the link for the specs and some reviews. www.dyxum.com/lenses/detail.asp?IDLens=210
商品詳細
ブランド: Leica (ライカ)
商品名: Summilux-M (ズミルックス) 35mm f/1.4 ASPH 6bit
シリアル: 4080358
マウント: ライカ Mマウント
付属品: フロントキャップ、リアキャップ、12589フード、フードキャップ、専用ケース
[商品状態]
美品：殆ど使用されていない、きれいな状態
[外観]
ピントリングにわずかに使用感が見られますが、その他非常にきれいな状態です。
塗装剥がれや目立つキズなどはございません。
詳しい状態は商品写真をご覧下さい。
[光学]
光を当ててよく見るとわずかにチリ(1-2ヶ所)がありますが、写真には全く影響の無い程度です。
[動作]
ピントリング、絞りリングともに動作は良好です。絞り羽根もきれいな状態です。安心してお使い頂けます。
Konica Big Mini, diese Kamera erschien 1990 auf dem Markt. Woher kommt der Name 'Big Mini'? Weil diese Kamera trotz der geringen Größe sehr gut ausgestattet ist und einige Funktionen bietet, die andere Kameras in dieser Preisklasse nicht haben. Hier die technischen Daten: das Objektiv ist ein Vierlinser mit eingebautem Skylightfilter, der automatisch gesteuerte Verschluß reicht von 3.6 - 1/500 Sek., somit kann man mit dieser Kamera auch stimmungsvolle Aufnahmen in der Dämmerung machen. Die automatische Scharfeinstellung erfolgt durch ein passives Infrarot-AF-System im Bereich von 0.35m bis unendlich. Die Filmempfindlichkeit wird durch DX-Codierung automatisch abgetastet im Bereich von ISO 25 - ISO 3200. Bei nicht DX-Codierten Filmen wird automatisch ISO 25 eingestellt, und das ist in meinen Augen etwas praxisfremd. Die meisten Kameras mit DX-Codierter Filmempfindlichkeitsabtastung stellen in diesem Fall auf ISO 100 ein, was wesentlich sinnvoller ist. Der eingebaute Selbstauslöser hat eine Vorlaufzeit von 10 Sek. Der eingebaute Blitz kann so eingestellt werden das er sich automatisch zuschaltet, man kann ihn aber auch manuell zuschalten, z.B. bei Portraits im Gegenlicht, die sogen. 'Fill-in' - Funktion. Bei Aufnahmen in der Dämmerung kann man den Blitz auch ausschalten, um die Atmosphäre nicht zu zerstören. Weiterhin bietet die Kamera die Möglichkeit die automatisch gewählte Blende auf plus/ minus 1.5 Blendenstufen zu korrigieren. Die Einstellmöglichkeiten werden übrigens auf einem kleinen LCD-Display auf der Rückseite der Kamera angezeigt. Zusätzlich kann man auch das Datum oder die Uhrzeit einbelichten in den Film. Zur Stromversorgung der Kamera wird eine 3V Lithium-Batterie des Typs CR123A oder DL123A benötigt. Durch die geringe Größe ist sie ideal geeignet als immer-dabei-Kamera. Man sollte sie aber in einer Tasche mit sich führen um die freiliegende Linse nicht zu zerkratzen. Schön wäre es gewesen wenn bei ausgeschalteter Kamera ein Schieber das Objektiv schützen würde.
MEGA-ISP shield connected to flash program into ATTiny13 MCU during prototyping of my new project.
Detailed information on this shield you may find here: http://drug123.org.ua/mega-isp-shield/
Shot with 100mm f/2.8L IS USM. Crazy sharpness, colors and huge magnification (1:1, standard for macros).
The last photo I posted of the Kaypro 1, I expressed that I found it puzzling Kaypro ditched the "universal" motherboard that most of their computers used, in favor of adapting a new board from the Kaypro 10 model.
Well after some research it seems that as the CP/M market died, Kaypro wanted to reduce the number of cp/m machines they produced, which in 1985 consisted of the Kaypro 4, New 2, 2x, and Kaypro 10.
The 4/new2/2x all shared the same internals, minus some very minor differences in hardware (such as having or not having a real time clock, or internal modem). The Kaypro 10 used a different board than the other computers.
I guess the thinking for ditching the "universal" board for 10 style board with the Kaypro 1 was that the ten had sold well for Kaypro, and continued to sell well. While the sales of the floppy disk based systems (the 4 et al.) had fallen off considerably.
So in order to save costs, Kaypro ditched the universal board in favor of the 10 board, and created the 1.
This actually almost makes the "1" model name make sense because it's more in line with "10" and the "1" replaced several models, with just 1 model.
Some contemporary literature mentions Kaypro working on or released a Kaypro with one disk drive, that would list for $995. I think that these statements are probably all incorrect, and the people writing them probably were refering to the Kaypro 1. The Kaypro II was called the II because it had two drives- so industry writers may have mistakenly thought the Kaypro 1 would be released with only one disk drive, going by the name. Or other simple miscommunication between Kaypro and the press about the 1 could have lead to the exact same mistake.
Although the 1 had just been introduced for 1986 and took advantage of Kaypro 10 parts... Kaypro also announced in 1986 that production would be ceasing on the 10! They also stated the 1 would be dropped and the 2x would be brought back... despite the announcement apparently Kaypro realized how silly this would be, and the 2x was never brought back. The 1 became the sole cp/m offering from Kaypro in 1987, and production of all kaypro portables (including the MS-DOS 16 and 16/2) ceased later that year.