Light meters
Knight-Kit KG-275 light meter User manual
User manual for Knight-Kit KG-275 light meter. 25 pages in English. Read the original PDF, download or print a copy without registration.
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Document details
- Brand
- Knight-Kit
- Model / document
- Knight-Kit KG-275 light meter
- Document type
- User manual
- Language
- English
- Pages
- 25
- File size
- 2.3 MB
- Category
- Light meters
- Document date
- Not specified in catalog
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Page 2 · Read text
www.orphancameras.com
knight-kit
MODEL
KG-275
EX POSU R E
METER
OWNER'S
GUIDEView original page 2Page 3 · Read text
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fl^anbgou...
for your interestin Knight-Kits.
This Assembly Manual represents our many decades of experience in
developing electronic kits which bring you outstanding performance at
dollar-savingprices , . , and with maximum ease of construction,
As you go through the pages of this brochure, note how care-
fully each stageof construction is explained-how each diagram
is magnified so that you almost have the feeting a good
instructor is working at your side!
Knight-Kit's "do and check" method of kit-building insures accurate and
simple assembly.Although your final product may representa very com'
plicated piece of 'electronic equipment, you will proceed with ease and
assurance,step-by-step. . , and enjoy enormoussatisfactionin your completed
working unit.
It is always a pleasureto serve you.
GAoenA A. D. Davis,PresidentView original page 3Page 4 · Read text
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KG-275 SUPER SENSITIVE EXPOSURE METER
gives you the right exposure in any light
a Uses Bottery-Powered Cqdmium Sulphide Photocell for High Sensitivity
o Accurotely Meosures Both Reflected qnd Incident Light Levels
o Color-Coded Scqles cqlculqte Proper lens opening ond Shutter Speed
The KG'275 Exposure Meler oulperforms other unils cosling much more. ll uses o super-
sensilive codmium sulphide pholocell, powered bV 2 l6ng losting mercury cells to give
you the correcl erPosure for toking perfect pictures-even under odverse lighfing conditions.
ll's so sensilive thot you con loke reodings of scenes itluminoled only by moontight.
With your KG'275, you reod light reflected from the subiect. A diffuser permits toking inci-I dent light reodings. Hondy pushbutlons selecl either low or high light levet ronges. Color-
coded scoles colculole Proper lens opening ond shuller speed. A domping circuit prolects lhe
meler movemenl from iolts when lhe KG-275 is nol in use. A butfon on the boltom of the
qcluoles botlery-lest ond meter-colibrole circuils.:It inslrumenl
3
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HO\^' TO USE THE 4. Pressthe H butfon (high ronge) ond reod the H or block scole on ihe
EXPOSURE GALCULATOR mefer. lf lhe reoding is lessthon 12,
press the L (low ronge) button ond
reod on the red scole.Reod only the
l. Test the botterY bY Pressing the scoleyou ore using (block for H, red
BATTERYTESTbufion on the bqck of for L). Serious under or overex-
the meler cose.The metershouldreod posure will result if fhe wrong
in fhe block bor on the scole lqbeled scole is reqd.
BATT; olherwise You need fresh bot-
leries. 5. Turn the outer diol until the meler
reoding oppeors in ihe METERwin-
2. Turn the inner diol until the ASA rot' dow. Sef your comerofo on indicoted
ing of the film in your comero lines combinotion of f-srop/shutterspeed.
up with the orrow in the ASA win- Reqd"Choiceof Settings"on poge 6.
dow. The "ASA window is for film
roted in degreesASA ('ASA). 6. lf your comero uses the EV-LVSsys-
tem, reod fhe number in fhe EV-LVS
3. Aim the meter os instructedfor the window only.
exposuremethodyou ore using.Meth-
ods ore exploined on the following 7. For movies,reod only lhe CINE scole
poges. tor f-slopffromesper second.
,;*;,*u&s- .:{aiA#d&n:JView original page 5Page 7 · Read text
GHOIGEwww.orphancameras.comOF SETTINGS
in lens colibrotion, Slight voriotions is mode, ond o light meosurementWheh shut- I severol lens colculoted,the exposure film seniitivity or the photocell fer speed,
o p e n i n g / s h u t f esr p e e d c o m b i n o t i o n s moy moke it necessoryto odd somecom-
oppeor on the exposurecolculotordiol. pensotionfo your exposures.Any of these combinolions will give
proper exposure,olthough your porficu- To determinewhot compensofion,if ony,
lor comeromoy hove only o few of them is needed, photogroph severolscbnes,ot
ovoiloble. vorious light levels.Photogropheoch ot
Experienceond personolpreferencewill fhe colculoted exposure, then V2 stop
tell you which combinotionis fhe best to over ond Vz stop under lo leorn which
use for ony porticulor photo. There ore, gives you besi results.however, some generol rules to remem-
ber. These rules ore:
EV-L\'S
l. To stop mofion thol moy be present
in the scene,use the fostestovoiloble Mony moderncomerosore equippedwiih
shutterspeed. this simplified method for setling lens
opening/shutterspeed. Toke light reod-2. When slow shutter speeds ore used
(1/25 sec. or slower) support the ings os outlinedon poge 4.
comero on o fripod or other suifoble Reod only the number ihol oppeors in support.This precoutionwill eliminote
the EV-LVSwindow. Set your comero for possible comero movement.A coble
shutter releoseis olso odvisoble. this number.
.; -,;;i*'f.esi$aas*-View original page 7Page 8 · Read text
EXPOSURE IS GONTROLLEDwww.orphancameras.com FILM SPEED
The higher the film speed, rhe less light BY: l. FltM SPEED will be necessoryto properly expose it. 2. LENSOPENING
3. SHUTTERSPEED Film speed rotings wilf be given in ASA,
, or ASA degrees ('ASA). Once the film 4. TIGHTINTENSITY
speed hos been sef on the exposurecol-
culolor, leove the film speed diol ot this Of these four items, fie photogropher
selfing unfil fhe film is removedfrom the con vory only shufier speed ond lens
opening, unlessodditionol light or od- comero. When new film is instqlled, be
iustedfilm processingis used.The proper sure lo check fhe ASA roting of the new
choiceof shutterspeedond lens opening roll. Color film technology is chonging
will control the exposureof your photos. ropidly, ond ASA rotings ore likely to
Your KNIGHT exposuremeter will deter- chonge.
mine fhe correcf setlingsfor you.
SHUTTER SPEED
Shufierspeed indicotesfte length of time
LENS OPENING thot the shutler is octuolly open, ollow-
ing light to possthrough the comero lens Lens openingsore usuolfy expressedin ond strike fte fifm. Shutter speeds ore f-numbers.The f-number or f-stop is the usuolly colibroted in froctions of o sec- rotio of the focol length to the moximum ond. These colibrotions ore usuolly opening. Colibrotionsof f .5 to f 64 ore orronged so lhot fhe next foster speed ovoiloble on the exposure colculotor. will be y2 of the first. This qllows the Somemoderncomerosuse EV-LVS,o sim- phologropher fo eosily odiust exposure. plified system for lens opening/shutter}t speed colibrotion. Shutferspeedis olso colibrotedin EV-[VS.
.,,;tl-,r. ,,.;*al';*i;;ii&iii*S1$elil46,*,rJJrdffifiidt**e&6t&xua;oma' ,**r*;[i;r;;.,*x&ii&ii88,3L**View original page 8Page 9 · Read text
www.orphancameras.comMETER ISR THE KNIGHT EXPOSURE
E- B A S | C A T T Y A R E F L E C T E D L I G H T METER. For most phofogrophic purposes REFLECTED
L I G H TF reflected light meosurementsore'the eos- *-.*^lP--.r\"---
L iest to use. The ligh] thal is reffected {.
Eb lrom lhe subiecl is the light thot will octuolly expose the film.
C + r . . r r . r .
T posure for reflected light ore-: l. Comero
E position, 2. Closeup, 3. Substitute reod-
Fl ing. These methods ore exploined on theY following poges.
Incident light reodings ore used io I
meosure rhe light thot is folling on o Nsubiect. This method of light meosure-
rn"nt i, useful when it becJmes difficult G I N C I D E N T
L I G H Tlo toke on occurote reflected light meos- I
urement. Movies, copy work, ond con- Frglrosty scenes ore eosy fo photogroph A
using this method for meosuring light. E tr
To meosure incident light, slide the dif- N
fuser over fhe photocell opening, stond T
close to fhe subiect, ond point the meter
toword the comero locotion.
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wtNDow
S l i d e d i f f u s e r in f ront of
wlndow ONLY f o r i n c f d e n t
llght reodings
N O R M A L P O S I T I O N O F D I F F U S E RView original page 10Page 14 · Read text
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GLOSEUP METHOD
Use this method for foking portroits, or Use this modified version of this method
ony other scene where only one item is to photogroph very controsty scenes.
of interest. (Controsty scenes hove extremes of light
ond dork in the some oreo.)
l. Hold the meter obout 12" from the
desired subiect. l. Toke o closeup reoding of the bright-
2. Press lhe high or low ronge buttons, est oreo.
whichever is necessory. 2. Toke o second closeup reoding of
3. Colculote exposure directly from this the dorkest oreo.
reoding. 3. Colculote exposure from the overoge
REMEMBER: of these two reodings.
Be coreful thot you do not cost o
shodow on the port of the subiect thot EXAMPLE: Bright oreq - 20
the reoding is token from. Your shodow Dork qreo - 6
wifl couse q low light reoding, qnd re-
sult in serious overexposure. Colculote exposurefrom 13.
t 3View original page 14Page 17 · Read text
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OVEREXPOSURE PROPER UNDEREXPOSURE
Overexposure results when Proper exposure is the result Underexposure results when
too much light strikesthe film. of th6 right combinotion of insufficient fight strikes the
Using o lens opening thot is the four foctors thot control f ilm. This condition moy be
too wide, or o shutter speed exposure. Proper exposure is coused by using o shutter
thot is too slow will result in eosy to ochieve with modern speed thot is too fost, or o
overexposure. bfock ond white, ond color lens opening thot is too smoll.
fifms. U n d e r e x p o s e d b l o c k o n d
An overexposed block qnd white negotives wif l qppeor A properfy exposed bl q c k Yery light, qnd resuft in owhite negotive is eosily iden-
ond white negotive will con- print thot is too dqrk. Under-tified; it will oppeor very dork
toin olf of the detoil thot wos exposed color tronsporenciesond result in o finished print
present in the origino I scene. will oppeor too dork, ond thethot is too light. Overexposed
Prints of o properly exposed colors will seem cold ondcolor tronsporencieswill op- negotive, will show detoil, "mvddy."peor very light ond "woshed even in the shqdow oreos.out." Slight underexposure is less
seriousthon overexposure, be-
Cofor tronsporenciesthot ore couse little detqil is lost. Ad-
Overexposure is considerobly correctly exposed o re o lso iusted printing will usuolly
more serious f ho n underex- eosy to identify. Properly ex- compensote for on underex-
posure becouse detoil is lost, posed color will oppeor yery posed negotive, unless the
ond connot be regoined. noturoI ond "life-like." underexposure is severe.
r6View original page 17Page 18 · Read text
PRINTSFROMwww.orphancameras.comBLACKAND WHITE
II
I
I
I
PROPEREXPOSURE
I
LIView original page 18Page 19 · Read text
i A\,AILABLE LIGHTwww.orphancameras.comG O L O R F I L M S
Most photogrophers experimenr wifh dif- Modern high speed films ond lensesollow
ferent films, ond ofter finding one thot most omoteur photogrophers to use the
best suits their needs, stoy with this por- existing, or ovoiloble light for the moior- ticulor type. Using one porticulor |ype of itfl ity of their photos. The extreme sensitiv-
film exclusively will ollow the overoge ity of the KNIGHT exposure meter will omoteur photogropher to step info ony I1 provide occurote light meosurementseven
photogrophic situotion ond gef excellent ot extremely low light levels. However,
results. lf it becomes necessoryfo chonge ollow 30 seconds for the exposure mefer the type of film thot you ore using, try fo to stobilize for meter reodings of 6 or less. gef one with the some ASA roting.
Toke light reodings in the following mon- The extreme occurocy of rhe Knight Ex- i
ner for ovoiloble light photos: posure Meter will be o greot qid in color
film work becouse exposure of color film
t. Toke o closeup reoding of the desired is more criticol fhon block ond white. i' (Usuolly subiect. the low ronge will Alwoys check the specificotions supplied
hove fo be used). with the film to see if ony chorocteristic hos been chonged. & 2. Colculote exposure from this reoding.
FILTERS
REMEMBER:Long exposures (over | /25 Use of q filter will require increosed ex-
sec.) will require some sort of comero posure becouse the light possing through i
support. This precoution will eliminote the lens is reduced. To compensote,divide
possible comero movement, which will fhe ASA roting of the film by the filter i
blur the photo; o coble shutter releose is focfor. For exomple: For on ASA roting .L
olso recommended to further isolote the of 200 ond filter foctor of 4, set the diol
r8 comero from vibrotion. to reod 50 in the ASA window.
.Ck --.*l, &Ai,r*.r. ., n..,,."..,*View original page 19Page 20 · Read text
MO\'TES www.orphancameras.comGANDLEPC'WER
For movies, the light meosurement pro- Your exposure meter con olso be used to
cedure is the some os for still shots. meosure the light folling on o work sur-
The comero position is the preferred foce, os o desk or workbench.
mefhod for meosuring light. lncident light To meosure condlepower, slide the dif-
moy olso be used, ond mony profession- fuser over the window. (Refer to the pic-
ols prefer lhis mefhod. fure on poge 9.) Ploce the exposure meter
Mony movie comeros hove only one shut- on the surfoce you wish to meosure, wifh
ler speed, 16 fromes per second. To col- fhe diffuser pointing ot fhe light source.
culote exposure for o comero of this type, Use this toble to converl me?er reoding
set lhe colculotor diol ro fhe proper meter to foot-condles.
reoding; lhen set the lens opening to fhe
setting odiocent to the 16 fromes per
second morking, on the diol (red scole). Meler ft-c Meter fhc
For comeros fhof hove vorioble shutfer r .0t4 1 2 2 8
speeds, ony of the combinotions on the 2 .O28 13 55
colculolor diol will give proper exposure. 3 .055 11 ilo 4 . i l 15 220
Remember, when foster shutter speeds 5 .22 16 110
ore used, ond the film is shown ot 16 6 .41 17 880
frqmes per second,the motion will oppeor 7 .88 18 1750
I 1.75 19 3500slower thon it wos originolly viewed. This 9 3.50 20 7000
phenomenon will ollow you lo slow down l0 7.@ 2t t40@
subiects fhol qre moving ot o very ropid l l t 1 22 28000
rote. For most subiects, the l6 fromes per
second speed will be sotisfoctory. I 9
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www.orphancameras.comMAINTENANGE
N o m o i n f e n o n c e i s n e e d e d f o r y o u r BATTERY TYPE: The bottery consistsof
KNIGHT exposure meter except occo- 2 mercvry cells, Mollory PX-I3 or equiv-
sionol bottery replocemenf. Of course, olent.
you will wont fo give the exposure meter To reploce bottery, lurn the botteiy 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 BATTERYAS FOLLOWS:
NOTE: lf I cell is reversed, the meler will l. Pressthe BATTERYTESTbutton 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 bofiery
Prolonged exposure to cold weofher is good, the pointer will rest on the (below 32' F) moy fempororily reduce BAT mork. lf the pointer stops below
bottery voltoge. In this cose, simply worm rhe BAT mork, the boilery is weok,
the celfs with your hond, ond the expo- ond must be reploced. tI sure meter will be reody for use. C A U T I O N : D O N O T r e c o l i b r o t e t h e I*
mefer for worn cells; this will result in HOW IT WORKS
inoccurote reodings.
3. Check the new cells, if the old ones The codmium sulphide (CdS) photocell
were reploced. vories in resistonceos fhe intensity of the
light striking the cell vories. The more
Under overoge use, the cells should lost intense the light, the Jessihe resistonce.
from one fo two yeors. Commerciol use This voriotion in resistonce controls the
will require replocing the cells more fre- flow of current from the bottery through
20 quently. the meter.
.;" ]*g*"* - " --,-x:;r+li.r:^, ,-*.'-:ai**i .irtx*rilie&.* sView original page 21Page 24 · Read text
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T h i s i s t h e u l t r a - m o d e r n K n i g h t E l e c t r o n i c s p l a n t i n
M a y w o o d , l l l i n o i s , a n e a r b y s u b u r b o f C h i c a g o T h i s
extensive facility is devoted completely to the research,
e n g i n e e r i n g , a n d m a n u f a c t u r i n g o f q u a l i t y e l e c t r o n i c
equipment in kit form Knight pioneers in creating better
electronic products at lower cost for hobbyists, experi-
menters, laboratories, schools, and industry.
knight electronics
A S U B S I D I A R Y O F A L L I E D R A D I OView original page 24Page 25 · Read text
www.orphancameras.comThey represent the finest electronic equipment in kit form.
Truly creative engineering and the use of premium quality parts assure superior performance.
Every detail is planned for easy construction,
Resrstorsare card-mounted and identified; wire is precut; small parts are packaged in transparent plastic bags.
Superb step-by-step"show how" manuals make KNIGHT-KITSeasiestto build.
of exacting builders of electronicequipment , . this has been
true since the early 20's There is an outstanding KNIGHT-KlT for every requirement, Each is a rewarding
experiencein kit construction,You will be proud to build and own a KNIGHT-KlT.
REFERTO TH'S NU/I4BERWHEN
ORDER'NG SERY'CEOR PARTS 84K07I -750506A-CA-I 064-300View original page 25Related documents and language editions
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