DOCSLIB.ORG

View and Print This Publication

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
View and Print This Publication . - A mzbjar $enezt eYrr=,?, i~,~-~ed fi~~j "he Ei:iikk &- su~~rccsTechrloiogy SateeUi.ke (EivfS) W!S a syr-t,c~piic vie%\i of large areas taken in four sepsrzie wave&ernds from more than 550 miles in space. BWTS k-11agery p~~~~des?he land maaag.i;r 21 up-to-date plxoto iyap of an 95,000-acre 2rea ai diflsreet ldmes (seasons) of i..ile year. ~e!~er'reporeed that "' '- enia imagery ~firs promise in forest rr.,a,~ag--ment inveatory work over extensi~~ziyforested areas, althou& results to date are experklentai and not yeady k: im1ne&atr: US?. q-7, A his expedmental satellite was launched or.1 $.sly 23, 1972, by the 'U.S, Natioi%a] Aeronautic. and Space AdarzmstratEor:. {NASA). B"crecrj& scerle in- _',miL~ion. 1-,j ,.i.-:-.i.banr '2-r a. mu'itispectra! f.-anrer and ieiays ei.;r;lionic signals to gronna. ;acili'&s.- The signxis are cn:?x:erf.ed coauentio2si; photographic liI"itr~ imagss in -the brim of positive 78-rrnz-1, irans- pzrencies by an electrsi~bsz~ iecorder. p'-n5m:.rwuyiCa illad$---,, from the archhe%ty~~n~par@:?ciei .- 7- - be ,oiaLnedq7 l-~ horn IdASB in the for:-:~ o[ third- f Ai;bszr~:t: jL 11:~Cnod I;gc, beer1 6s::ised p;onacmg<. i genertitioa "I-~III.~?.'c;la~d;,-afld-1'.~?1itc: pesitives and I liig;-l-qkalit:; b~eck-l.,;x~-wrhi.,G;-,egat*-s QnjcE,; ail< 1-1- ' \ . r fiega"t;irs. 1~i~;;cstof the positives been of good ! ficiencly koj:? dense .t;anspaancie~ o?;ransti:?g Tzoc? 1 i qdity, but the negatives h8,!7$ bean exrrejlleiw deese. 1 Earth Resources -lechnolog!i Sate%", imager)?. Trcns- 1 J -qrp..~e:E eiia:cateeall a stand arc^ light sour.ce ic 1 'Clonsequectly, the negat':rss have a high fog le.;rei, a 1I dete:raIin::+ ''L A erposu::e and processing information 1 reduced Bil~.~bt~range 6:' the gay scde, an8 a loss of 1 r;eded ior 111akng negaii1.e~.A "2:istenn baSA Eatinn" 1' image contrast. T?.ie gray scale on eacll 'T~-;II~. 1 was develop&. b;i &stir.$ si6 selecting combinclbo:?~ j irar?spa:e~:;?cy i~n_zs$9 steps, but ~~lyseven or eip&t car; I 3f 31j39light SO;J~~S~a>-,, devi.,louj:. chal:,p in Cjb9~. 1 . ,,. r.fc,.,,,-- ..; 1 be diccri.ninate& on -the ieme negatphies. 1 density and c~~~;..~si,S .lligc3bv~ L liiijg iri :pl~,-il) s&, TI- A of i e?f:c:s are. CCI;~L.SILG~jy ~a]c~latit~.g2djustm3nt~ in ex- I llrc remot,$ sensing reeesrch 5nit th; Pacigc 1 posw;~ deveic~nren", .?'i;e metbod desc$oed czn I: Souih~~leskForest acd Range B::perime;c.t Statio;~ie , . --. 1 be used in: ~eiaiiaelysnag da;lcrooms withmi sipen- I using bRTS &~24~..geryto stad)/ foract fespjrces. The s>re eqrripm:r.r. Iis ns.,'F.i~u~al~r.s '-,---, ?i,ras ciernoms:ralec in a 1 I u~~l'i'sph-otographic sta-ff hzs fo~~~dit &~.~cIL;&, how- / Ngh-al'liludc plvoio mission s.i-;r ehe Black Hi& 1 eici, lilaie ji!i~fa~toq5$&ig~m,$n:i (lox 30x) j :ii;tiomal Faresil S~T.J,"~I Eakata. 1 - I irom '.,ASA-prodzced ;legzt&es for ze]d and Long exposure is needed to rtilake enlargen~ents Table 1-Steps lo be used for compeasati~~gfor reciprocity eeffect z'o from the dense nega";ves. A 4X enlargement, for ex- processing fln2 " ample, requires an exposure of 10 to 15 Klinutes. Even hi&er magnification requires unreasonably long exposure-and this can have adverse effects on the finished print, such as loss of critical detail. I have developed a teclznique for producing high- quality black-and-white negatives from ERTS trans- parencies. This method insures that the same quality is mainbined frorn one pass (orbit) to the next as well as frorn season to season. It can also be used to make negatives from any transparencies-black and white or color. The method can be followed in a small darkroom without any large investment of l~ource:film data sheet for Kodak Ektapan Film-4162, March 1969. money. '~ppl~the percent adjustment to correct the developing time selected in fable 2. MATERIALS AND METHOD Each ERTS transparency is evaluated on a light source to determine the correct exposure and process- exposed film and the positive transparency are placed ing information. I use either channel 5 (0.6 to 0.7 on the enlarger base and held Rat with a piece of pm) or channel 7 (0.8 to 1.1 pm) for making copy optically flat glass. negatives. Through a series of tests, a "System ASA Processing the exposed sheet can be handled Rating" was derived for a particular filrn emulsion. in either a tray or a tank, depending on the number This was done in conjunction with both the illumina- of sheets to be liandled at one time. tion provided by the evaluating light source as well as Fgms, Developers the exposing light source. Once these light sources have been established they should remain as stan- Several films and developers were tested for use in dards. Changes in film density and contrast, due to making negatives from ERTS transparencies. I found the reciprocity characteristics of the emulsion, are that Kodak Ektapan Film (Type 4162)~was the best controlled by use of the Reciprocity Effect Compen- for this task. Ektapan film is a medium-speed (ASA sation Table (table I). Use of the table helps elimi- loo), very fine grain, extremely stable (Estar base), nate all preliminary testing. panchromatic film. A hi&-quality negative was pro- duced by processing Ektapan film in Kodak Microdol- Equipment X filrn developer. Microdol-X Developer has the Any light meter can be used to read the over-all characteristics of low graininess coupled with maxi- density (light value) of the tes"cransparency. The mum sharpness and renders a low fog level. light source used to evaluate the test transparency is the standard to which all transparencies will be com- ""Sstem ASA Rating" pared in the future. This standard can be a light table, To use the light meter, a light standard, an enlarger transparency illuminator or viewer, contact printer, elluminator), Ektapan filrn, and Microdol-X or even a homemade light box consisting of a lamp Developer in the right combination, I had to first find and a diffusion screen. But the standard must remain a usable ASA rating. This was done by a series of test unchanged. exposures. The film exposure time was kept constant An enlarger was used as a source of illumination to and the enlarger lens aperture bf stop) setting changed contact expose the negative image from the ERTS (e.g., 10 sec @ f.8, 10 sec @ f.11, 10 sec @ f.16). Tl?? transparency. The selection of an enlarger over other test film sheets were notch-coded for identification, printing equipment was due to its versatility. De- and all exposure variables were recorded. They in- sirable features of an enlarger permit variations in ex- cluded: exposure time and f stop; lens used; distance posure time, aperture opening (f stop), distance from lens to base (easel); diameter of light beam on between lamphousing and easel, and the use of neu- easel (focus control); variable enlarger settings; and tral density filters. Neutral density filtration of 100 neutral density filtration-if used. (color compensating filters-cyan, magenta, and Before developing the test exposures, it is neces- yellow) was used to control exposure time. The .un- sary to compensate for reciprocity effect. Reciprocity Table 2-Developitzg hime,!? hsed on I/POOsecond Ektapan The tecl~niqareclassified here is unique in that it is Si'i eet FiIm and hficrodol-X Film Developer, QY solution composed of specific pieces of equipment and one teml_leratuve particular film type. Others using it must go through this procedure with their own equipment to arrive at their own stem" rating. A different ""$stem ASA Rating" was established for mahng enlarged negatives . ERTS transparencies. STEP-BY-STEP PROCEDURE With the new ""$s"tem ASA Ra"cngWknow~i, a fast, efficient method is available for producing nega- l~ustadjust for reciprocity effect by using adjustment tives from ERTS transparencies by follo~ngthese figures in fable I, column 4. steps: 2~odakEktapan Film-4162 data sheet, March 1969. 3~ostoften used temperature. 1. Obtain a light meter reading for the trans- parency on a standard li&t source. failure can occur at exposure times exceeding 1/10 second because of the characteristics of the emulsion. To compensate for changes in density and con"crat, use fable I and table 2. Table 1 shows that the 10- second test exposures required 35 percent less devel- opment. The tray method (temperature of developer -68"~) requires a developing time of 10 minutes f&ble 2). Because of the long exposure, however, the adjusted developing time for the test exposures processed under these conditions was 6% minutes (i.e., 35 percent of 10 minutes = 3.5 minutes; there- fore, 10 minutes less 3.5 minutes = 6.5 minutes). After the film was processed and dried, the nega- tives were examined for over-all density, contrast, gray scale, fog level, and detail. Contact prints were also made from the test negatives and evaluated. A negative was selected that. had a good range of gray levels, a minimum fog level, and "ce sharpes"Eeta8. After the test and the evaluation were completed, these hown values were used to deterrmine the "*stem ASA Rating": (a) exposure time (seconds); (6) aperture setting (f stop); (c) lens aperture adjust- ment (column 2 of table 2); and (d) light vdue of "Iansparency (obtained with meter, transparency, and standard light source).
Load more

Recommended publications
  • Reveni Labs Light Meter User Manual and Operating Instructions Revision: 4 Date: 2020-04-16
    Reveni Labs Light Meter User Manual and Operating Instructions Revision: 4 Date: 2020-04-16 Revision: 4 – 2020-04-16 Layout and Features Key Features • Ambient reflective metering • Single LR44 battery • Integrated flash/accessory • EV Display feature shoe mount • 45-degree cone sensor field • Bright and crisp OLED of view display • Left and right lanyard/strap • Simple controls and menu holes • Aperture or Shutter priority • Dimensions: 0.92(22.5) x mode 0.86(21.8) x 0.71(17.8) • Exposure compensation in inches(mm) 1/3 stops (-2 to +2 stop • Weight: 9g incl. battery range) Technical Data • Shutter speed range 1hr – 1/8000th sec in 1 stop • Aperture range increments • Film ISO range F0.7 – f1024 in 1 stop increments ISO 1 – ISO 12800, see “Setting Film ISO” for full list • EV Range: EV 2 – EV 19.5 in 0.1EV increments (@ISO 100) Page 2 of 14 Revision: 4 – 2020-04-16 Getting familiar with your meter The Reveni Labs Light Meter is intended for easy attachment to the top of a camera via the flash/accessory “hot/cold” shoe mount. This is a common feature on top of many cameras made in the past 100 years. The precise dimensions of the shoe vary from camera to camera so if initially if the fit of your meter is tight, it will “wear” slightly over the first several uses and become more free-moving. This is not a problem as there are integrated lever springs to ensure the meter does not fall out of the camera mount.
    [Show full text]
  • Ground-Based Photographic Monitoring
    United States Department of Agriculture Ground-Based Forest Service Pacific Northwest Research Station Photographic General Technical Report PNW-GTR-503 Monitoring May 2001 Frederick C. Hall Author Frederick C. Hall is senior plant ecologist, U.S. Department of Agriculture, Forest Service, Pacific Northwest Region, Natural Resources, P.O. Box 3623, Portland, Oregon 97208-3623. Paper prepared in cooperation with the Pacific Northwest Region. Abstract Hall, Frederick C. 2001 Ground-based photographic monitoring. Gen. Tech. Rep. PNW-GTR-503. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 340 p. Land management professionals (foresters, wildlife biologists, range managers, and land managers such as ranchers and forest land owners) often have need to evaluate their management activities. Photographic monitoring is a fast, simple, and effective way to determine if changes made to an area have been successful. Ground-based photo monitoring means using photographs taken at a specific site to monitor conditions or change. It may be divided into two systems: (1) comparison photos, whereby a photograph is used to compare a known condition with field conditions to estimate some parameter of the field condition; and (2) repeat photo- graphs, whereby several pictures are taken of the same tract of ground over time to detect change. Comparison systems deal with fuel loading, herbage utilization, and public reaction to scenery. Repeat photography is discussed in relation to land- scape, remote, and site-specific systems. Critical attributes of repeat photography are (1) maps to find the sampling location and of the photo monitoring layout; (2) documentation of the monitoring system to include purpose, camera and film, w e a t h e r, season, sampling technique, and equipment; and (3) precise replication of photographs.
    [Show full text]
  • Tip Sheet – Lumen Meter
    TIP SHEET – LUMEN METER What is a lumen meter? A light meter or lumen meter is a device used to measure the amount of light in a certain area. Lumen meters have many uses such as photography and cinematography, however for our purpose we want to help reduce the amount of wasted light which equals wasted electricity. If conducting an outdoor lighting audit the purpose of a lumen meter would be to reduce the amount of light pollution. Light output is typically measured in luxes or lumens. Sometimes you will hear the word footcandles. This is another standard unit of measure that is used interchangeablely with the term lumen. Ehow.com defines a lux as a uniform standard by which the amount of visible light present in a given space can be described where as a lumen is a measure of just how much visible light is produced by an object such as, for example, a light bulb. 1 footcandle/lumens = 10.76 luxes and 1 lux =.093 footcandles or lumens Where can I purchase a lumen meter? Eco-Schools USA recommends the light meter from Mastech found on Amazon.com. http://www.amazon.com/Mastech-Light-LX1010BS-display- Luxmeter/dp/B004KP8RE2/ref=sr_1_5?s=electronics&ie=UTF8&qid=1342571104&sr=1-5 Mastech Light Meter LX1010BS with LCD display, 100,000 Lux Luxmeter - $20.17 Operating directions Mastech Light Meter LX1010BS with LCD display, 100,000 Lux Luxmeter operating instructions are found on the next page. The unit of measure displays in luxes. This will be a great opportunity for your student to work on conversions.
    [Show full text]
  • Exposure Metering and Zone System Calibration
    Exposure Metering Relating Subject Lighting to Film Exposure By Jeff Conrad A photographic exposure meter measures subject lighting and indicates camera settings that nominally result in the best exposure of the film. The meter calibration establishes the relationship between subject lighting and those camera settings; the photographer’s skill and metering technique determine whether the camera settings ultimately produce a satisfactory image. Historically, the “best” exposure was determined subjectively by examining many photographs of different types of scenes with different lighting levels. Common practice was to use wide-angle averaging reflected-light meters, and it was found that setting the calibration to render the average of scene luminance as a medium tone resulted in the “best” exposure for many situations. Current calibration standards continue that practice, although wide-angle average metering largely has given way to other metering tech- niques. In most cases, an incident-light meter will cause a medium tone to be rendered as a medium tone, and a reflected-light meter will cause whatever is metered to be rendered as a medium tone. What constitutes a “medium tone” depends on many factors, including film processing, image postprocessing, and, when appropriate, the printing process. More often than not, a “medium tone” will not exactly match the original medium tone in the subject. In many cases, an exact match isn’t necessary—unless the original subject is available for direct comparison, the viewer of the image will be none the wiser. It’s often stated that meters are “calibrated to an 18% reflectance,” usually without much thought given to what the statement means.
    [Show full text]
  • Camera Basics, Principles and Techniques –MCD 401 VU
    Camera Basics, Principles and techniques –MCD 401 VU Topic no. 49 Film Exposure Exposure in film photography is defined as the quantity of light that is allowed through the camera lens and onto the photo film controlled by the intensity of light (through the aperture) and length of time (determined by the shutter speed). For correct exposure in a film camera, whether 35mm, medium format, or large format, it is essential that you correctly set both the shutter speed and aperture. Film speed will also play a role in determining the correct exposure. Obtaining the Correct Film Exposure Technically speaking, the correct film exposure does not exist as different photographers will have a different idea of what is properly exposed and what is not. See the example below for three different exposures of the same site. Depending on whether you want to see all the detail or darken it for night will determine the right exposure for you. However, the way in which you get any exposure remains the same. Light Metering Most modern 35mm single-lens reflex (SLR) film cameras have through-the-lens (TTL) meters that intake the amount of light available to help you determine the best exposure. These types of light meters are called Reflective Meters as they measure the light bouncing off your subject and into the camera lens. For beginners using a camera without a light meter, it is highly suggested that you purchase a handheld meter to use. Handheld meters can be Reflective or take 1 Camera Basics, Principles and techniques –MCD 401 VU Incident Light Readings.
    [Show full text]
  • L-308X L-308X-U Operating Manual
    Light Meter L-308X L-308X-U Operating Manual Thank you for purchasing our product. Please read this operating manual so that you will fully understand the features and operation of this product. Then keep the operating manual in a safe place for future use. Please see the Startup Guide for information about the basic operations. ■ Safety Precautions Before using this product, please read this "Safety Precautions" for proper operation. The WARNING symbol indicates the possibility of death or serious WARNING injury if the product is not used properly. The CAUTION symbol indicates the possibility of minor to moderate personal injury or product damage if the product is not CAUTION used properly. The NOTICE symbol indicates cautions or restrictions when using NOTICE the product. Please read all notes to avoid errors in operation. The NOTE symbol indicates the reference information and related NOTE functions. We recommend that you read these notes. The arrow indicates reference pages. WARNING ● Infants or toddlers may accidentally wrap the strap around their neck, so please place it in a location out of their reach. There is a danger of suffocation. ● Keep the Lumidisc and synchro terminal cap out of reach of Infants or toddlers, as swallowing such objects can cause suffocation. ● Do not place batteries in open flames, attempt to short, disassemble or apply heat to them, use unspecified batteries, or recharge them. They may burst and cause fires, serious injury, or damage to the environment. Polyvinyl Chloride (PVC) cable and cord notice ● Handling the cord on this product or cords associated with accessories sold with this product will expose you to lead, a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm.
    [Show full text]
  • Average Scene Reflectance in Photographic Exposure Metering Douglas A
    Average Scene Reflectance in Photographic Exposure Metering Douglas A. Kerr, P.E. Issue 1 January 30, 2005 ABSTRACT The quantity “assumed average scene reflectance” is widely mentioned in connection with the calibration of “reflected light” photographic meters. Understanding of its significance is elusive. In this paper, we examine the actual significance of this quantity and how it plays a role in deciding upon a calibration constant for a reflected-light exposure meter. We also examine the significance of various oft-mentioned values of assumed average scene reflectance, such as 18% and 12-13%, and finally discuss the use of a gray card of known reflectance to perform “incident light” metering using a reflected light meter. SUMMARY The quantity “assumed average scene reflectance” is widely mentioned in connection with the calibration of “reflected light” photographic meters. Often questions are raised as to exactly what that means, and as to what numerical value has likely been used in establishing a calibration for a particular exposure meter or in-camera metering system. Also of interest is the matter of using a “gray card” target to perform incident light metering with a reflected light meter. The question is often raised as to what reflectance is most appropriate for direct use of such a card. We conclude that: • The matter of the significance of the average scene reflectance assumed in the calibration of a reflected light meter is not a simple one. • The value of assumed average reflectance of a “typical” scene upon which the calibration of reflected light meters is predicated is commonly 18%.
    [Show full text]
  • Operating Instructions Q Operating Instructions
    EXPOSURE METER Operating Instructions q Operating instructions SAFETY PRECAUTIONS This manual uses the following safety labels for AWARNING and ACAUTION that you must follow. /b WARNING Indicates hazards or unsafe practices that can result in severe personal injurry or death. ACAUTION Indicates hazards or unsafe practices that can rresult in personal injury or damage to your L-308Bll exposure meter. (CAUTIONI Indicates an operation note or limitation you must use. Please read the notes to avoi d an incorrect L-308BII operation. NOTE(S) Provides the reference information and related functions that are useful for your L-308Bll operations. /bA WARNING &ZAUTlON CONTENTS SAFETY PRECAUTIONS .......................................................................................... i CONTENTS .................................................................................................................... ii 1. Parts Designations ...................................................................................... 2. Display ................................................................................................................... 2 2.1 LCD panel .................................................................................................................................. 2 3. Mode Selection ................................................................................................ 3 3.1 Switching between incident light metering and reflected light metering ........... 3 3.2 How to fit the Lumidisc ........................................................................................................................
    [Show full text]
  • EV - LV - ISO Relationships
    EV - LV - ISO Relationships By Dick Sullivan EV Exposure Value Table f 1.4 f 2.0 f 2.8 f 4.0 f 5.6 f 8.0 f 11 f 16 f 22 f 32 1 s 1 2 3 4 5 6 7 8 9 10 1/2 s 2 3 4 5 6 7 8 9 10 11 1/4 s 3 4 5 6 7 8 9 10 11 12 1/8 s 4 5 6 7 8 9 10 11 12 13 1/15 s 5 6 7 8 9 10 11 12 13 14 1/30 s 6 7 8 9 10 11 12 13 14 15 1/60 s 7 8 9 10 11 12 13 14 15 16 1/125 s 8 9 10 11 12 13 14 15 16 17 1/250 s 9 10 11 12 13 14 15 16 17 18 1/500 s 10 11 12 13 14 15 16 17 18 19 1/1000 s 11 12 13 14 15 16 17 18 19 20 Exposure Values: The Table above shows the range of EV (1-20) that an SRT is capable of being set to, in Whole Stops, f 1.4 to f 32 and 1 second to 1/1000 second. The table does not show Intermediate or Half Stops such as f 1.2, f 1.7, f 3.5, f 4.5, etc. They of course, would be between the Whole Stops, and produce fractional EV numbers. Each EV number represents one stop in exposure.
    [Show full text]
  • PLSB S11 Acc-Light Meters
    Section11 Accessories - Light Meters Introduction . 720-721 Gossen . 722-725 Spectra Cine . 725 Minolta . .726-728 Pentax . 729 SourceBook Polaris . 730 Sekonic . .731-734 Novatron . .735 Lighting SP Studio Systems . .735 Wein . .735 The rofessional Photo, Video, Cine & Theatrical Photo, Video, P for LIGHT METERS INTRODUCTION TO LIGHT METERS the same exposure for each Advantages of Incident object, to render a consistent Measurement Incident Measurement exposure. Light meters are Incident meters measure accu- calibrated to assume that all rately and consistently and are subjects are of average 18% not affected by variances in reflectance, or neutral gray. reflectance of the subject or The use of the 18% neutral scene. Because of this, incident gray standard allows a reflect- meters give the most accurate ed light meter to render cor- exposure for the majority of rect readings for “average” situations and subjects. subjects in “average” lighting situations. (The value of 18% Reflected Metering neutral gray is also referred to Reflected metering reads the as Zone V in the Zone System, intensity of light reflecting off an advanced black and white the subject and may vary exposure method.) according to variances in Reflected tonality, color, contrast, back- Incident Metering ground, surface, or shape. The incident meter is aimed Measurement Meters are designed to regard at the light source and meas- all subjects as 18° neutral gray ures the light source falling reflectance. Reflected measure- directly on a scene and is not ment of any single toned area influenced by the reflectance will result in a neutral gray of the subject being pho- rendition.
    [Show full text]
  • Sverdlovsk 4 Manual
    Photoelectric exposure meter Sverdlovsk-4 instructions (English translation) This manual has been translated and edited from the Russian original Contents 1. Description and features ............................................................................................................................................................ 3 2. Kit contents ................................................................................................................................................................................. 3 3. Technical specifications ............................................................................................................................................................. 4 4. How to use the meter ................................................................................................................................................................. 6 Measuring the exposure ........................................................................................................................................................ 6 Checking the battery level ....................................................................................................................................................10 Replacing the battery ...........................................................................................................................................................10 Methods for measuring exposure .........................................................................................................................................12
    [Show full text]
  • Light Meters for Photo/Video/Cinematography
    w 200mm Photo Meters CINE Meters Illuminometers light meters for photo/video/cinematography w ７０mm L-758 SERIES DIGITALMASTER | L-478 SERIES LITEMASTER PRO | L-308DC DIGICINEMATE L-308S FLASHMATE | L-389A STUDIO DELUXE III | L-208 TWINMATE | i-346 ILLUMINOMETER www.sekonic.com ................................................................................................................ For over 60 years, Sekonic Corporation has designed and manufactured the most innovative and sophisticated light measuring instruments in the photographic and Cine/Video industry. Our commitment to meet and exceed the demands of the professional and their expectations continues with a vigorous passion. From our humble beginnings, it all started on June 16th, 1951, when Mr. Ryuichi Mitani, a young man at the time, established “Seiko Electronic Co. Ltd” an engineering, manufacturing and design company for exposure meters and selenium purification systems. That same year the company released their first exposure meter, the L-1 under the brand name of Sekonic. By 1960 the Sekonic brand meters became so popular that the company changed the name from Seiko Electronic Co. Ltd to Sekonic Corporation, a true testament that Sekonic meters were destined for success. The company grew over the years and in 1963 it was listed on the Tokyo Stock Exchange. Sekonic’s detail to precision engineering and business expertise in the electronics business landed them many notable OEM clients such as Copal and Konica. In 1974 Sekonic received the “Good Design” award from the Ministry of International Trade and Industry in Japan for the L-428 System Meter. Sekonic would later be honored with this prestigious award again in 1994 for the L-308B Flashmate.
    [Show full text]