Dear Mr Shyam, It is always good to discuss and you are welcome. Your observation is correct about speed & depth of field to get good shot, but I think you are wrong about synchronization, since if it fast shutter speed (1/1000 & more) you can freeze the act (act should be continuous) where as the probability of synchronization (periodic act-- in this case as I mentioned earlier the jets are about 1 sec. gap for each) will be lesser and lesser as SP is faster & faster, as the no. of frames/sec are fixed in any given mode(4.5 frames/sec. in D90 at continuous high speed). If I have used 1/100, may be more shots got synchronised. For your clarification I am giving the mathematical calculation below:
Speed Recording Time(Sec) 1/100 1/20 to1/25 1/200 1/40 to 1/50 1/1000 1/200 to 1/250 and so on I think you got the point Thank You Subramanyam Kalluri Hyderabad Mobile: 09866685175 "WANDERING ONE GATHERS HONEY" My Picasa albums: http://picasaweb.google.com/subbukalluri ________________________________ From: SHYAM GHATE <[email protected]> To: "[email protected]" <[email protected]>; kalluri subramanyam <[email protected]> Cc: "[email protected]" <[email protected]> Sent: Saturday, 24 September 2011 2:17 PM Subject: Re: [ButterflyIndia] Common Jay secreting urine while puddling Hi Kalluri & Chittranjanjee, Since the query was made, I thought I will take the liberty to give some views. I am a learner of photography and open to corrections. Any inputs from others will help improve my skills at photographing butterflies. Your parameters : Camera Nikon D90 ; Aperture Priority ;Aperture f 14 ; Shutter speed1/200; EV-0.3 It seems that the light was good at the time of photographing. Since you were positioned so square to a flat subject like the butterfly, I think you could have comfortably used an Aperture like f 7.1 or 8 as you do not need much depth of field. At your chosen ISO, that would have made the shutter 5 of 6 stops faster, so that you might have been able to get a shutter speed of 1/800 or 1/1000. The shutter speed could have been further increased by going up on ISO as I think 400 would be very safe ISO for cameral like D 90 (with max ISO of 3200?). Higher shutter speed would have improved chances of synchronisation - which was your main interest. Higher shutterspeeds obviously reduce shake as well. Enclosing two images in similar position as yours, both shot at f 7.1. As you can see there is no loss sharpness. The shutterspeeds have been 1/1000 and 1/2000 respectively. I routinely shoot at ISO 400 or little above as my camera max limit is 6400. cheers --- On Fri, 9/23/11, kalluri subramanyam <[email protected]> wrote: >From: kalluri subramanyam <[email protected]> >Subject: Re: [ButterflyIndia] Common Jay secreting urine while puddling >To: "[email protected]" <[email protected]> >Cc: "SHYAM GHATE" <[email protected]>, "[email protected]" ><[email protected]> >Date: Friday, September 23, 2011, 5:23 PM > > >Aperture Priority >ISO -- 200 > >Subramanyam Kalluri > > >________________________________ >From: SHYAM GHATE <[email protected]> >To: [email protected] >Cc: Chittaranjan Sengupta <[email protected]> >Sent: Thursday, 22 September 2011 7:38 PM >Subject: Re: [ButterflyIndia] Common Jay secreting urine while puddling > > > >Hi Kalluri, > >Can you please also add (i) in which mode (Shutter priority / Aperture >Priority / etc) the pictures were shot, (ii) what was the ISO used? > >cheers > >--- On Tue, 9/20/11, kalluri subramanyam <[email protected]> wrote: > > >>From: kalluri subramanyam <[email protected]> >>Subject: Re: [ButterflyIndia] Common Jay secreting urine while puddling >>To: "[email protected]" <[email protected]> >>Cc: "Chittaranjan Sengupta" <[email protected]> >>Date: Tuesday, September 20, 2011, 1:55 PM >> >> >> >>Dear Chittaranjan, >> >> >>Here actually it is nothing to do with shutter speed or aperture, select to >>suit the lighting conditions. >>The problem comes with synchronising the act, visually almost impossible >>except for luck(in Jayanthi river I got Chain Swordtail with one out of two >>shots which I recognised while editing - file attached). This time, I used >>high speed continuous mode and I din't stop until 20 frames, then checked & >>all are good shots but only two are synchronised . One advantage with this >>act is normally it will not get disturbed quickly and will give sufficient >>time to think. >> >> >>Camera Nikon D90 >>Shutter speed1/200 >>Aperture f14 >>EV-0.3 >>without flash >>If it is against light fill in is required >> >> >>Regards >>Subramanyam Kalluri >>Hyderabad >>Mobile: 09866685175 >> >> >>"WANDERING ONE GATHERS HONEY" >>My Picasa albums: >>http://picasaweb.google.com/subbukalluri >> >> >>________________________________ >>From: Chittaranjan Sengupta <[email protected]> >>To: [email protected] >>Cc: kalluri subramanyam <[email protected]> >>Sent: Tuesday, 20 September 2011 12:56 AM >>Subject: Re: [ButterflyIndia] Common Jay secreting urine while puddling >> >> >>Dear Shri Subramanyam, >>Excellent photograph. What was the shutter-speed? >>I read about this feed & bleed behavior of butterfly in the book >>(Paschembanger Prajapati) by Shri Judhajit Dasgupta. >>Regards >>-Chittaranjan Sengupta >> >> >> >> >> >>________________________________ >>From: kalluri subramanyam <[email protected]> >>To: "[email protected]" <[email protected]> >>Cc: Krushnamegh Kunte <[email protected]> >>Sent: Mon, 19 September, 2011 1:43:00 AM >>Subject: [ButterflyIndia] Common Jay secreting urine while puddling >> >> >>Dear All, >> >> >>Common Jay secreting urine while puddling, I observed it for about 15 >>minutes, before it got disturbed. The jets are continuous for every second, >>that means the sucking is so fast. >> >> >>Taken at Osmania university gardens, Hyderabad, AP on 18-09-2011 >> >> >>Thank you >>Subramanyam Kalluri >>Hyderabad >>Mobile: 09866685175 >> >> >>"WANDERING ONE GATHERS HONEY" >>My Picasa albums: >>http://picasaweb.google.com/subbukalluri >> >> > > > -- Enjoy
