CLICK 2 MAY 2010 OUTING COMPETITION APRIL 2010

Managing CommitteeMr. Kersi Rabadi

PresidentMr. R. B. Pednekar FFIP

Vice PresidentMr. Prasad Pawaskar

Jt Hon Secrtary, Hon. Editor, OutingMr. Samir Mohite APSI, FFIP

Jt. Hon SecretarySmt. Kalpana Shah

Hon. TreasurerMr. Nagesh Sakpal

Salon ParticipationMr. Milind More

LibraryMr. P. G. Shivalkar Hon PSI

Mon. Competition, GalleryMr. Santosh Sawant

Outing InchargeMr. Vilas Gholse

Studio InchargeMr. Dilip Patil

Library, Environment & Maint.

MEMBERS MONTHLY COMPETITION APRIL - 2010

BEGINNERS MONTHLY COMPETITION APRIL- 2010

Kalpana Shah 2nd Girish Katti Acpt Ganesh Ambokar Acpt Ganesh Ambokar Acpt

Dr. Arun Nayak 3rd in Outing

Kalpana Shah 2nd in B/W Umakant Madan 2nd Col

Santosh Mahadik 2nd in B/W Jitendra Mhatre 2nd in Col.

Judge: Prof. Raja Shetge,HON. G. D. ART (COMM),

APSI, HON. PSI

OUTING AT MURUDON 21ST MARCH, 2010.

CLICK 3 MAY, 2010 MEMBERS MONTHLY COMPETITION APRIL - 2010

Prasad Pawaskar 3rd Deepak Bartakke Acpt

Deepak Bartakke Acpt

Sandeep Wairkar Acpt

Sandeep Wairkar Acpt

Kalpana Shah Acpt

Kalpana Shah Acpt

Umakant Madan Acpt

Umakant Madan Acpt

Vilas Gholse Acpt

Vilas Gholse Acpt

Sunil Marathe AcptRavindra Deodhar AcptVaibhav Jaguste Acpt

Prasad Mantri Acpt

Ravindra Deodhar Acpt

Judge: Prof. Raja Shetge,HON. G. D. ART (COMM),

APSI, HON. PSI

Our member Mr. S. Banerjee has offered to convert our membership cards into an elegant plastic (thick) cards at a special rate. Those members who are interested may contact the PSI office for details.

CLICK 4 MAY, 2010BEGINNERS MONTHLY COMPETITION APRIL- 2010

Jiten Hadkar Acpt Jitendra Mhatre Acpt

Jitendra Mhatre Acpt

Jitendra Mhatre Acpt

Aditya Waikul 3rd in B / W

Viraj Kamat Acpt Dr. Arun Nayak Acpt Santosh Mahadik Acpt

Xersis Tampal Acpt Priyaanka Mathur Acpt Aditya Waikul Acpt

Santosh Mahadik 3rd in ColThomas B. Acpt

Aditya Waikul Acpt

Aditya Waikul Acpt Mugdha Joshi Acpt

Judge: Prof. Raja Shetge,HON. G. D. ART (COMM),

APSI, HON. PSI

CLICK 5

PROGRAMMES - MAY 2010

Shri Atul Chaubey, AIIPC, IIPC Silver

MAY, 2010

7th Fridayth Friday

21th Friday Extra Ordinary General Meeting.

28th Friday

Outing 23rd May, 2010 “Kanheri Caves”. Gather at National Park, Borivali Gate at 7.30 am

WorkshopGallery

- Monthly Competition, Colour Prints, Monochrome Prints & Outing for Mem. Beginners.

14 - Slide Show of Kashmir (Tulip Festival) Outing. - - An Evening with Dr. Mayuri Panse from Pune, (She is award winning

Documentary film maker) on topic “How to make Movies with your D SLR”

Model Evening - 18th May, Tuesday 2010, 6.00 p. M. Fees Rs. 100/-

- -15th & 16th Digital Workshop by . Fees Rs. 900/-

- From 14th May to 20th May, 2010. An Exhibition of Kashmir (Tulip Festival).

In 64th Bristol International Salon of Photography 2010 our member Shri Samir Mohite, APSI, FFIP had 3 Acpt.In Pathfinder salon our member Shri Shirish Jhaveri had 3 Acpt.

Our Jt Hon Secretary Mr. Prasad Pawaskar Inaugurate Photography Exhibition as Chief Guest at Ahmednagar from right Collector ofAhmednagar Dr. P. Anbalgan, Sculpture artist Shri Pramod Kamble & Cine Artist Prajakta Newaskar on 30th March, 2010.

Notice of Extra Ordinary General MeetingNotice as required under the Rule no. 57 of the Society isalready issued to the members of The Photographic Societyof India that an Extra Ordinary General Meeting will be held on Friday 21st May 2010 at Society’s premises at 6.30 p. M.To transact the following business.1) To amend the Rules of “Rules and Regulations” of the Society.

INVITATION The Photographic Society of India

Cordially Invite You To Attend The Inauguration OfA Special photography Contest & Exhibition in celebration of

50th Anniversary of formation On Saturday 1st May 2010 at 6.30 p.m.

At PSI Art Gallery.Exhibition will remain open till Thursday 13th May 2010

MANAGING COMMITTEE MEMBERSYOUR PRESENCE WILL BE TREATED AS YOUR CONTRIBUTION AND LOVE TOWARDS P. S. I.

of Maharashtra State

CLICK 6 MAY, 2010Demystifying Flash

Guide Numbers I t s eem s m an y pe op le do n ot h av e an und ers tand in g of w h at

gu id e n um be rs are , and h ow they are ef fec t ive ly us ed . Af lash un it 's gu ide n um be r is use d to de te rm in e th e p ro pe r e xp os ure w he n s ho otin g m an ual f las h w itho ut a f lash m e te r .B ut w ith tod ay 's adv anc ed f lash sys te m s , gu ide n um b ers are m os t o ften used to com p are pow er o utp ut betw ee n f lash es .U n de rstand in g h ow a gu ide n um b er is us ed to cre ate a f las h im age w ill he lp y o u d eterm ine w h at f las h is r ight for yo urn eed s .

Sp ec if ic ally , a f las h un it ’s gu ide n um be r ind ic ates h ow m uc hligh t the un it w ill e m it in re lat ion to a stand ard f ilm s pe ed .

T h e h igher the gu ide n um be r , th e m o re p ow e rfu l the f las h . T h is n um be r is us ually in d ic ate d in the ow ne r 's m an ual of th e f lash . It’s rep res en ted as "G N 1 18 w ith ISO 10 0f ilm ." Jus t try to k eep o ne th in g in m ind : yo u d on 't nec ess ar ily n eed to b uy a f lash th atre ac hes the other en d o f the b lo ck to ph o to grap h y o ur fr iend th at ’s stand in g ten fee t in f ro nt o f yo u . Y o u m ight g ive h im b ad s un b urn w ith th at b ig gun !

T h e othe r use o f th e gu ide n um b er is to de te rm ine y o ur c orre ct ap er ture fo r f las he xp os ure . It is im po rtan t to k now th is w h en us in g m an ual ex po s ure w ith a f lash . A lo t o fthe o lder f las hes h ave som e typ e of c h art or sc ale to determ in e p ro pe r e xp os ure . O fthe se , qu ite a few o f them h av e large gaps in the d is tan ce s c ales or are jus t h ard to re ad .M an y new e r f las h un its d o n ot h ave thes e s c ale s at all. T h is c an be tro ub le som e if y o u ’re us in g on e of the n ew e r f lash es from an auto m atic f las h s ys tem o n a m an ual c am e ra.

W h y use a new f las h w ith yo ur o lde r c am era? If y o u h ave to as k yo u h av en 't loo ked atn ew f lash he ad s late ly . M any new un its are p ac ke d w ith fe atures th at w ill gre at ly ex p an d the c ap ab ilit ies o f y o ur c urre nt c am era. In m any c ase s y o u do n 't h ave to up grade yo ure ntire c am era sys te m to ge t the be nef its of m od ern f las h tec hn o lo gy . Ex ac t ly w h atfe atures w ill or w on 't w ork w ith yo ur c am e ra w ill v ary de pen d in g o n the c am era/ f las h c om b in at ion . Y o ur b est bet is to f in d a s to re th at h as th e f lash y o u 're interested in an das k to see b oth the f las h and th e m an ual. U s ually there is a c h art in th e f lash m an ual th ats pe lls o ut fe ature co m p atib ility on a c am era-by -c am e ra b as is . D on 't take the s ale s p erso n's w ord th at a p ar t ic u lar f lash "w ill w o rk w ith an y c am era in th e A B C line ".

So onc e yo u f ind th at n ew f las h , h ow do y o u use it? To d eterm ine th e co rrec t ape r ture ally o u ne ed to d o is d iv ide the c am e ra to s ub je ct d is tance into th e gu ide n um be r .

L e t ’s ass u m e yo u h av e a f las h w ith a g u id e n um b er o f 11 8 w ith ISO 10 0 f ilm . Y o u w o u ldf oc us o n y o ur s ub jec t an d the n re ad the d ist anc e o n y o ur le n s th a t lin e u p w ith the foc u s m ar k . F o r th e s ake o f th is ex am p le le t 's as s um e yo u r s u b jec t is tw e lv e fe et aw ay . D iv id ey o ur g u id e n um be r by the d is t ance an d yo u w o u ld g et y o ur aper tur e .

G u ide N u m b er / D is ta nc e 1 1 8 / 12 = 9 .8

o r an a pe r tu re o f f9 .8

In th is ex am p le y o u w o u ld g et f/ 9 .8 f o r an ape rtu re . S inc e m os t o f th ese n u m be rs y o uw o u ld g et w ill no t be ex act ape r ture s , y o u s im p ly s et yo u r ape rtu re a s c lo s e as y o u p oss ib ly c an ; in th is c ase f 8 . T he ex pos u re la t itud e o f th e f ilm w ill a llow yo u to ge t au s ab le im age if yo u ar e o f f s ligh t ly in yo u r se tt in gs . If y o u ’r e st ill u nc om f or tab le o r w an tto be ex tr a c au t io us , yo u c an b r ac ke t yo u r exp os u re . J us t r em em b er , the ape rtu re is w h atc on tr o ls th e e xpo s ur e w ith f la sh ph o to gr aph y , s o b r ac ke t w ith jus t th e ap er tur e , n o t th e s h ut te r spe ed , w he n u s in g f la sh .

CLICK 7 MAY, 2010

Another thing to keep in mind w hen using this procedureis w hen you are increasing your film speed; your guide numbers w ill double every two stops. This w ould mean the flash in this example w ould now have a guide numberof 236 w ith ISO 400 film . This w ould give you anaperture of f/19.6. Going to an ISO 800 film , your guide number would jump to 472.

Don't w ant to do the math (it's OK to admit it)? Themanual for most new flash units w ill contain a small chartor "cheat sheet" you can use.

It's important to remember guide numbers are arecommended starting point and you may need to tweakthe exposures to your ow n personal taste. They w ill, however, give you good usable image to work w ith.

H opefully this information w ill make it easier tounderstand the real d ifferences in the pow er of the flashes, so you don't over or under buy. It's also useful to demystify using a flash manually if you w ant to use one of today's new er flash units w ith your older camera. Justremember the follow ing simple formula and you’ll be fine in the field.

Guide number / distance = f/stop

Value

The guide number is the product of the maximum flash-to-subject distance and the f-number of

the aperture that will correctly expose film or a digital sensor with the specified sensitivity.

GN = distance × f-number

This simple relationship holds because the brightness of a flash falls off with the square of the distance,

but the amount of light admitted through an aperture decreases with the square of the f-number.

The guide number represents an exposure constant for a flash unit. For example, a guide number of 80

feet at ISO 100 means that a target 20 feet away will be correctly illuminated with an aperture of f/4 (80 =

20 × 4) using a sensitivity of ISO 100. For the same guide num ber and an aperture of f/8, the light source

should be 10 feet from the subject (80 = 10 × 8). [1]

Guide numbers do not depend on the focal length of the lens: the distance a flash can illuminate does not

depend on the angle of view of the lens. However, some flashes have the capability to "zoom with the

camera" and concentrate their light into a narrow beam for use with a telephoto lens. Since the light from

the flash is more concentrated, this increases the guide num ber. Manufacturers typically advertise the

guide number for their flashes at the narrowest setting. For instance, the Olympus FL-50 has a guide

number of 50m at ISO 100 when set to its narrowest setting, but significantly less when illuminating a

wider area. To be Cont.