Film cameras
KG-275 User manual
User manual for KG-275. 24 pages in English. Read the original PDF, download or print a copy without registration.
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Document details
- Brand
- Various brands
- Model / document
- KG-275
- Document type
- User manual
- Language
- English
- Pages
- 24
- File size
- 3.2 MB
- Category
- Film cameras
- Document date
- Not specified in catalog
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Page 4 · Read text
KG-275 SUPER SENSITIVE EXPOSURE METER
gives you the right exposure in any tight
o Uses Bottery-Powered Codmium Sulphide Photocell for High Sensitivity
o Accurotely Meosures Both Reflected ond Incident light levels
o Color-Coded Scqles Cofculote Proper lens Opening ond Shutter Speed
The KG'2715 Exposure Meler oulperforms other unils cosling much more. tr uses o super-
sensitive codmium sulphide photocell, powered by 2 long losting mercury cells to give
you the correcl exPosure for toking perfect piclures-even under odverse lighting conditions.
It's so sensilive thot you con toke reodings of scenes illuminoted only by moonlight.
With your KG-275, you reod light reflected from the subiect. A diffuser permits toking inci-
dent light reodings. Hondy pushbuttons select either low or high lighr level ronges. Color-
coded scoles colculole Proper lens opening ond shutter speed. A domping circuit protecls ihe
meler movement from iolts when lhe KG-275 is nol in use. A button on lhe boffom of the
inslrument qcluoles bottery-lest qnd meter-colibrole circuits.
@ Copyright 1964, Knlght Electronits Corp., Maywood, IllinoisView original page 4Page 7 · Read text
, GHOICE OF SETTINGS
When o light meosurement is mode, ond Slight voriotions in lens colibrorion, shut-
the exposure colculoted, severol lens ter speed, film sensitivity or the photocell
opening/shutter speed combinotions moy moke il necessory to odd-some com-
oppeor on the exposure colculotor diol. pensotion lo your exposures.Any of these combinotions will give
proper exposure, olthough your porticu- To determine whof compensofion, if ony,
lor comero moy hove only o few of them is needed, photogroph severol scbnes, ot
ovoiloble. vorious light levels. Photogroph eoch ot
Experience ond personol preference will fhe colculoted exposure, then y2 stop
tell you which combinotion is the besl to over ond Yz stop under to leorn which
use for ony porticulor photo. There ore, gives you best results.however, some generol rules to remem-
ber. These rules ore: E\/-LVSl. To stop motion thoi moy be presenl
in the scene, use the fqstest ovoiloble Mony modern comeros ore equipped with
shutter speed. this simplified mefhod for setting lens
2. When slow shutter speeds ore used opening/shut?er speed. Toke light reod-
(1/25 sec. or slower) suPport the ings os outlined on poge 4.
comero on o tripod or olher suitoble Reod only the number lhot oppeors in support. This precoution will eliminole
possible comero movement. A coble fhe EV-LVS window. Set your comero for
shutter releose is olso odvisoble. www.butkus.usthis number.View original page 7Page 8 · Read text
EXPOSURE IS CONTROLLED FILM SPEEDI
BY: l. F|LM SPEED The higher the fifm speed, rhe less light
necessory to properly expose it. 2. LENS OPENING will be
3. SHUTTER SPEED Film speed rorings will be given in ASA,
4. TIGHT INTENSITY or ASA degrees ("ASA). Once fhe film
speed hos been set on the exposure col-
speed diol of this Of these fou.r items, the photogropher-fens culotor, leove the film con vory only shutter speed ond setting untif the film is removed from fhe
opening, unfess odditionol light or od- comero. When new film is instoiled, be
iusted film processing is used. ih" prop", sure to check the ASA roting of the new
choice of shutter speed ond lens op"nlng roll. Cofor film technology is chonging
will control the exposure of your photosl ropidly, ond AS.A rorings ore likel/ to
Your KNIGHT exposure meter will deter chonge.
mine the correct settings for you.
SHUTTER SPEED
LENS OPENING thotShutlerthespeedshutterindicotesis octuoltyfhe fengthopln, ofolfow-time
lens openings ore usuolly expressed in ing light to poss through the comero lens
f-numbers. The f-number or f-stop is the ond strike the fifm. Shrtte, speeds ore
rotio of the focof length to the moximum usuolly colibroted in froctions of o sec-
opening. Cofibrotions of f .5 to | 64 ore ond. These colibrotions ore usuotfy
ovoifoble on the exposure colculotor. orronged so lhot the next fcste, ,p""i
Some modern comeros use EV-LVS, o sim- wilf be y2 of the first. This ollows the
plified system for lens opening/shutter photogropher to eosily odiusf exposure.
speed colibrotion. Shuiter speed is ofso colibrored in EV-LVS.View original page 8Page 9 · Read text
r
131 THE KNIGHT EXPOSURE AAETER IS
BASICALTY A REFLECTED TIGHT E METER. For most photogrophic purposes R E FLECTED
F reflected light meosurements ore the eos- ,^^*n.^--,*-t^-/-- LIGHT
L iest to use. The light that is reflected {. lrom lhe subiect is the light thot will E octuolly expose ihe film.
G The moin methods of reoding correct ex- ".-:-:{---\-iM,,irfl T posure for reflected light ore: l. Comero
E position, 2. Closeup, 3. Substitute reod-
ing. These methods ore exploined on the
D following poges.
Incident light reodings ore used fo I
meosure the light thot is folling on o
subiect. This method of light meosure-
INCIDENT ment is useful when it becomes difficult Nc LIGHT to toke on occurote reflected light meos- I
urement. Movies, copy work, ond con- D trosty scenes ore eosy to photogroph
using this method for meosuring light. E tr
To meosure incident light, slide rhe dif- N
fuser over the photocell opening, slond T
close to the subiect, ond point the meterwww.butkus.us
8 foword the comero locotion.View original page 9Page 16 · Read text
SUBSTITUTE READINGS
I Mony times it will be found thot o closeup
best to use for oh:-gJ -:\=>,-' reoding would be the porticulor subiect, but the subiect is phys-
icolly impossible io opprooch. ln such c
cose, o substitute reoding is colled for.
Substitute reodings moy be mode from
ony convenient obiect thot closely
opproximotes the subiect to be photo-
grophed. For instonce: o person's hond
is o good substitute for o person's foce.
To toke o substitute light reoding:
1. Choose o good substitute.
2. foke o closeup light reoding from the
substitute.
3. Colculote exposure from this reoding.
REMEMBEk; All of the precoutions thot
you use for o closeup reoding will opply
to this type of light reoding.
l5View original page 16Page 17 · Read text
OVEREXPOSURE PROPER UNDEREXPOSURE
Overexposure results when Proper exposure is the result Underexposure results when
too much light strikes the film. of the right combinotion of insufficient light strikes the
Using o lens opening thot ir the four foctors thol control film. This condition moy be
too wide, or o shutter sPeed exposure. Proper exposure is coused by using o shutter
ihot is too slow will result in eosy to ochieve with modern speed thot is too fost, or o
overexposure. block ond white, ond color lens opening thot is too smoll.
films. Underexposed block ond
white negotives will oppeor
An overexposed block ond A properly exposed block Yery light, ond result in owhite negotive is eosilY iden- ond white negotive will con- print thot is too dork. Under-rified; it will oppeor very dork toin oll of the detoil thot wos exposed color tronsporencies
ond result in o finished Print present in the originol scene. will oppeor too dork, ond the
lhot is too light. OverexPosed Prints of o properly exposed colors will seem cold ondcolor trqnsporencies will oP- negotive, will show detoil, "mvddy."peor very light ond "woshed even in the shqdow oreqs. Slight underexposure is lessout."
serious thon overexposure, be-
Color tronsporencies thot ore couse little detoil is losl. Ad-
usuollYOverexposure is consideroblY correctly exposed ore olso iusted printing will
more serious thon underex- eosy fo identify. Properly ex- compensofe for on underex-
posure becquse detoil is lost, posed color will oppeor very posed negotive, unless the
ond connot be regoined. noturol ond "life-like." underexposure is severe.
www.butkus.us
l6View original page 17Page 19 · Read text
11 AVAILABLE LIGHT - GOLOR FTLMS
Most phologrophers experiment with dif- Modern high speed films ond lenses ollow ferent films, ond ofter finding one thot most omoteur photogrophers to use ihe best suits their needs, stoy with this por- I existing, or ovoiloble light for the moior- ficulor type. Using one porticulor type of I ity of their photos. The extreme sensitiv- film exclusively will ollow the overoge I ity of the KNIGHT exposure meter will omoteur photogropher to step into ony t provide qccurote light meosurements even photogrophic situotion ond get excellent ot extremely low light levels. However, results. lf it becomes necessory to chonge . I ollow 30 seconds for the exposure meter the type of film thot you ore using, try to fo stobilize for meter reodings of 6 or less. I get one with the some ASA roting.
Toke light reodings in the following mon- The extreme occurocy of the Knight Ex-
ner for ovoiloble light photos: posure Meter will be o greot oid in color i
film work becouse exposure of color film
l. Toke o cfoseup reoding of the desired is more criticol thon block ond white.
subiect. (Usuolly the low ronge will Alwoys check the specificotions supplied i
I hove to be used). with the fifm to see if ony chorocteristic
2. Colculote exposure from this reoding. hos been chonged.
FILTERS
REMEMBER: long exposures (over | /25 Use of o filter will require increosed ex-
sec.) will require some sort of comero posure becouse the light possing through
- support. This precoution will eliminote the lens is reduced. To compensote, divide
possible comero movement, which will the ASA roting of the film by the filter
blur the photo; o coble shutter releose is foctor. For exomple: For on ASA roting
the of 200 ond filter foctor of 4, set the diof olso recommended to further isolotewww.butkus.usl8 comero from vibrotion. to reod 50 in the ASA window.View original page 19Page 20 · Read text
MO\/TES CANDLEPOWER
For movies, the light meosurement pro- Your exposure meter con olso be used to
cedure is the some os for still shols. meosure the light folling on o work sur-
The comero position is the preferred foce, os o desk or workbench.
method for meosuring light. Incident light To meosure condlepower, slide the dif-moy olso be used, ond mony profession- fuser over the window. (Refer to the pic-ofs prefer lhis method. fure on poge 9.) Ploce the exposure meter
Mony movie comeros hove only one shut- on the surfqce you wish to meosure, with
ter speed, l6 fromes per second. To col- the diffuser pointing of the light source.
culote exposure for o comero of this type, Use this toble to convert meter reoding
set the colculotor diol to the proper meter to foot-condles.
reoding; then set the lens opening to fhe
setting odjocent fo the 16 fromes per
second morking, on the diol (red scole). Meler fl-c Meter ft-c
For comeros thot hove vorioble shutfer I .014 12 28
speeds, ony of the combinoiions on the 2 .028 13 55
colculotor diol will give proper exposure. 3 .055 11 ll0 4 .ll 15 220Remember, when foster shutter speeds 5 .22 16 110ore used, ond the film is shown ot 16 6 .41 t7 880
fromes per second, the motion will oppeor 7 .88 l8 1750
1.75 19 3500slower thon it wos originolly viewed. This 8
7000 9 3.50 20
7.oophenomenon will ollow you to slow down l0 2r t4000subiects thot ore moving ot o very ropid ll 14 22 28000
rote. For most subiects, the 16 fromes per
second speed will be sotisfoctory. t9View original page 20Page 21 · Read text
MAINTENANGE
No mointenonce is needed for your BATTERY TYPE: The bottery consists of
KNIGHT exposure meter except occo- 2 mercvry cells, Mollory PX-13 or equiv-
sionol bottery replocement. Of course, olent.
you will wont to give the exposure meter To reploce bottery, turn the bottery cop
the some coreful hondling thot is given on bock of the cose to OPEN. Insert two
to your comero. fresh cells, BOTH with the plus end to-
word the bottery cop. CHECK THE BATTERY AS FOILOWS: NOTE: lf I cell is reversed, the meter will l. Press the BATTERY TEST button on the not reod. lf both cells ore reversed, the cose bock with o finger or pencil. meter will reod bockwords. 2. Reod the meter scole. lf the bottery Prolonged exposure to cold weother is good, the pointer will rest on the (below 32' F) moy tempororily reduce BAT mork. lf the pointer stops below bottery voltoge. In this cose, simply worm the BAT mork, the bottery is weok, the cells with your hond, ond the expo- ond must be reploced. sure meter will be reody for use. CAUTION: DO NOT recolibrote fhe
meter for worn cells; this will result in HO\^/ IT \^/ORKS inoccurote reodings.
3. Check the new cells, if the old ones The codmium sulphide (CdS) photocell vories in resistonce os the intensity of the were reploced. light striking the cell vories. The more
Under overoge use, the cells should lost intense the light, the less lhe resistonce.
from one to two yeors. Commerciol use This voriotion in resistonce controls the
will require replocing the cells morewww.butkus.usfre- flow of current from the bottery through
20 quentlY. the meter.View original page 21Page 24 · Read text
-{
{ l-L : xfertwnfm F lctttgnt
knight
elertrsnits ffirp, H
i!:':!$6"" ..r rr*;itr;r iirl
This is lhe ultro-modern Knight Electronics plonf in
Moywood, lllinois, o neorby suburb of Chicogo. This
exlensive fociliry is devoted completely to lhe reseorch,
engineering, ond monufocturing of quolity electronic
equipment. Knight pioneers in creoting better electronic
producis ot lower cost for hobbyists, experimenters,
loborotories, schools, ond industry.
knight electronicsView original page 24Related documents and language editions
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