Ultrablitz Cornet P User manual

Poge       Contents

       1        Technicql doto
    2        Ultroblitz CORNET P photogrophy
               is so simple
   3        Fosten the CORNET P to comero
   4       Synchronizing cord
   5       Accumulotor chorging-moins operotion
   7        Re-octivotion of the storoge copocitor
    7       Automotic control systenr
    8       Aperture computer
   9      Guide number
   l0       Negotive moteriol ond development
   l1       Diogrom of guide numbers
   12       Speziol hints for obtoining even
             better snopshots with the Ultroblitz
        CORNET P
   l3      ULTRABLITZ Service

www.butkus.us

Technicql dolo
Wiring:         Tronsformqtion of energy through tronsistor, constont
                        light output by outomotic tronsistorized monitoring circuit
Guide numbersz /2...105 Block-whire lZ. DIN (40ASA)
                           46... 53 Colour    18' DIN (50ASA)
Colour tempe-  opprox. 5600' K
roture:
Number of       per qccumulotor chorge opprox. 20...80
                                                 .floshes:                                                                                                                                             fr
Time between   8...12 sec. qccumulotor operotion
floshes:         opprox. 12 sec. moins operotion
                          1/1ooo sec.Flosh durotion:
Light ongle:     opprox.65" horizontol ond verticol
Moins voltoges: olternoting current  I I 0, 125 ond 220 v, 40...60 cycles
Bottery           4,8 V nickel-codmium occumulotors (without mointenonce)
Weight'         opprox. 1 lb, chorging plug:71/2 ocs
Dimensions :       opprox. 43/a.x33kx1% inches

www.butkus.us

Fosten C0RNET P to romero



To do this, the odopter foot supplied with the floshlight
is compressed ond inserted in one of the two slots pro-
vided for this purpose. Slide the foot ond floshlight into
the comero shoe.




                                                                                                                                                  Digitally signed by Mike Butkus
                            Mike Butkus DN:org, cn=Mikeemail=mike@butkus.org,Butkus, o, ou=Butkus.c=US
                                                                                                                                Date: 2024.11.26 07:35:44 -05'00'
Alternotively, fosten the floshlight to the universol
brocket ond screw this to the comero.
When corrying the comero together with the CORNET P
on the shoulder,  it is recommended to slip the corrying
strop provided through the lug of the CORNET p in
order to prevent loss or occident.

Synchronizing cord





Withdrow the slide ond unwind o sufficient
length of synchronizing cord. Reploce slide
ond connect synchronizing cord to comero,
ensuring thot the comero synchronizing lever
is set to "X". Set shutter speed to obout
r/16e sec; if focol plone shutter is used, consult
monufocturers'    i nstructions.
For corrying purposes, insert the corrying
strop supplied inio ihe lug of the CORNET  P.

www.butkus.us
 Accumulator chorging - mcins operotion




The CORNET P is designed for connection to A.C.
 moins only. To rechorge the qccumulotor, connect
the chorging plug to the floshlight, setting the plug
to the correct voltoge with the oid of o coin, if
necessory.
Chorging is slqrled
simply by inserting the chorging plug in o moins
socket. The red signol lomp lights up to indicote
thot chorging is proceeding. At the some time, the
floshlight con be used os often os desired without
dischorging the occumulotor.
Chorging  is stopped
by pulling out the chorging plug from the moins
socket.                                          5

The nickel-codmium occumulotor built into the CORNET P needs no morn-
tenonce of ony kind, but must, of course, be re-chorged when run down.
The condiiion of lhe occumulotor is indicoted by the recovery time, thot is
to soy, the time which elopses between the emitting of o flosh ond the lighting
up of the signol lomp ogoin, when using the floshlight on boltery power.
This omounts io
      l0 secs. when fuily chorged  No. of floshes left' 70-80
     17 secs. when /a dischorged No. of floshes left: obout 20
     30 secs. when fully dischorged No. of floshes left' 0
The recovery iime should not be ollowed to exceed 30 seconds without the
occumulotor being re-chorged. The chorging period then qmounts to obout
l4 hours. When only 35 to 40 floshes hove been emitted, o chorging period
of obout 7 hours is odequote.  lt is not detrimentol to the occumulotor to leove
it unchorged for lengthy periods or to overchorge  it occosionolly. lts service
life is remorkobly long, omounting to some 400 to 500 chorges.
Should the floshlight be inodvertently  left on boitery operotion for o long time
ond the occumulotor consequently exhousted, it will usuolly cquse no domoge,
but it might be necessqry to give it o chorge of up to 60 hours. After being
dischorged 2 or 3 times in normol operotion ond being re-chorged ogoin for
l4 hours eoch time, it will ogoin perform ot full copocity.

www.butkus.us
           Re-oclivqtion of the storoge copoci?o

        When the floshlight hos not been used for severol weeks,  it is odviseoble to
            plug it into the moins for obout 20 to 30 minutes before use. This re-octivotes
            ihe electrolytic copocitor ond enobles the unit to deliver its full power once
           more. During the re-octivotion period, the unit should be floshed of intervqls.


          AutomotiG confrol system

              Th,e tronsistor reloy circuit of the CORNET p ,ou", bottery current ond ensures
            constont light output. lt is therefore no longer necessory, when toking o series
            of shots, to turn off the floshlight ofter eoch exposure in order to conserve the
           energy of the occumulotor. The outomotic control system outomoticolly iurns
1           off the bottery current os soon os the full flosh power hos been ottoined,
            which, in turn, results in o rise in the numb,er of floshes which con octuolly be
             used.
           Thonks to its outomotic control sysfem, fhe CORNET P con be kept in constont
             reodiness when imporiont events ore toking ploce, ond ihere is never ony need
           to miss thot once-in-o-lifetime shot.

Aperture compuler


                                                                1* 5,6 6,'<
             iesi




By doylight or constont ortificiol light, correct exposure is reguloted by meons
of the shutter speed ond operture, but the extreme shortness of on electronic
flosh permits exposure to be reguloted only by the operture. The operture
computer offers on eosy wcry of oscertoining the correct operture. For block-
ond-white film, set the block orrow to the oppropriote  sensitivity figure (e. g.
ASA 40). For colour film, the red orrow is used. The proper operture (e. g. 5.6)
con ihen be reod off opposite the subiect distonce (e. g. 16 ft.).

www.butkus.us

          Guide number
                lf the sensitivity of the film used connot be encompossed by the operture
           computer, the correci operture con be colculofed from the guide number, using
            ihe following formulo:
                 Guide number   : operture, e.g. for ASA 320 film 280 :  5.6
                    Subiect distonce                                                                -50
I.a
          The guide number is governed by the light output of the coRNET p ond the
              sensitivity of the film used, but it is olso influenced by the brightness of the
             subiect, the size ond brightness of the surroundings ond the method of deve-
             loping, it con therefore be regorded only os on opproximotion.
          The guide numbers given qre understood to opply to medium sized rooms
           with light-coloured wolls, ond con be used for distonces down to obout 3 ft.
              It is odviseoble to oscertoin the correct operture for shorter distonces by
            experiment.
        When toking pictures in the open, in lorge holls or ot long distonces from
             reflecting surfoces, the operture should be one or two stops lorger thon the
            figure obtoined by colculoiion or by meons of the operture computer.

The guide number is different for blocl<-ond-white ond colour films of the some
     sensitivity. Using the odiocent groph, the correct guide numbers for every
    type of film con be oscertoined os follows:
    Find the sensitivity of the film in the lefihond co,lumn, follow  it horizontolly to
    the right until it intersects one of the slonting lines (colour film, block-ond-white
     film), ond reod off the correct guide number on the bose line directly below
    the point of iniersection. Exomple: ASA 40, blocl<-ond-white film, guide nunr-
    ber:,l00.
                                                                                                             {

    Negotive moteriol ond developmenl
   The light of the CORNET corresponds to doylight of 5600" K intensity; use
    therefore only doylight film for colour exposures
   When moking block-ond-white exposures with film which is to be processed
    with speciol developers (fine-groin or compensoting developers), pleose note
    thof o lower guide number should be selected, os the full sensitivity of the film
     is not olwoys exploited in such coses. lt is odvisoble to oscertoin the guide
lO number by experiment when using speciol developers of this kind.

Speciol hints for obtoining even befter snopshots with the Ultroblitz
   CORNET P
    Front lighting often results in flot pictures. Better pictures, showing the effect
    of depth, con be obtoined by plocing the flosh lomp some distonce io the side
    or obove the comero, but still oimed ot the subiect. The slight loss in effective
     light con be compensoted by opening the operture of the lens o little. Suitoble
    extensions for the synchronising leod con be obtoined from ony photogrophic
     deoler.
    The ULTRABLITZ considerobly extends your field of photogrophy by enobling
    you to brighten deep shodows, especiolly necessory for colour film. Under dull
    conditions o flosh provides "sunlight" while when photogrophing ogoinst the
     light (contre-iour)  it smoothes out excessive controsts.
   An exomple of colculoting te correct operture:
    At o distonce of 12,5 feet the guide number 100 gives on operture of f 8.
    For the ovoiloble generol light, the exposure meier indicotes on exposure of
    1/25 sec qt f 8.
     Set the shutter to1 l25sec ond the operture to f ll insteod of f 8.
     In this woy the flqsh will hove obout the some effect os the ovoiloble light. By
12 reducing the exposure time, the effect of the ovoilqble light is reduced.

www.butkus.us

UITRABIlIZ Service

ln spite of the smoll size the Ultroblitz CORNET P is relioble ond o high per-
formonce ond does not need ony mointenonce. The CORNET P is the most up-
to-dote model, mode on modern equipment, ond hos been most corefully
tested.
lf you ore dissotisfied with the performonce of your Ultroblitz CORNET P
equipment ot ony time, pleose contoct the deoler from whom you hove bought
it or turn to the representotives of our compony in your country. The CORNET
WORTD SERVICE will be glod to help ond odvise you, wherever you ore.
Pleose send the complete equipment for servicing ond indicote type ond seriol
number of equipment together with your guoroniee cord ond detoiled infor-
motion obout oll troubles you experienced with the equipment. Experience hos
shown thot this is necessory for proper servicing of your ULTRABLITZ.
     Suppfied with Adapter foof       TG 3?3ltz
     CORNET P: Charging plug       SE l64llz
                    Corrying sfrop      TG 399llz
Speciol equipmentz Universol brackef    TG 275152