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An interesting photo, not because of its subject, but because of the way it has come about.
I've found a way to trick the minimum synchronization time of a D80, without the expensive HSS capable flash units. But from the beginning:
I own a Nikon D80, some lenses and a variety of flash units. My "flagship" is a Yongnuo YN565EX and two YN560II serve me as "workhorses" next to a Nikon SB-25 (and some other, older equipment from analog times).
A few days ago put a Facebook friend of mine, Galllo, an interesting task in his blog:
"Take a photo with flash exposure, with 1/4000th second, that is correctly exposed and no black bars ...
WITHOUT HSS / FP SYNC TO USE!"
Ok, my YN565EX is not capable of HSS and I always wanted to know, what I'm missing ;)
Under the following conditions, my trick seems to work reliably:
- I have set the D80 to "m"-mode, shutter speed is 1/1000 to 1/4000
(at least shorter than the regular sync speed)
- in the hot shoe of the D80 is the YN565EX, mode "m", power = 1/128,
Reflector head turned about 130 degrees to the back towards the YN560II
- diagonally behind me is one YN560II, mode "S1", power = 1/1.
Full power is important, even at 1/2 Power this trick goes wrong (I've tried!)
And off you go. Lack of sun today, I took ​​a picture of one of my favorite colleagues (here in the inspection of a desk lamp). I think even if the light is turned on, the direction and the strength of the shadow in the picture is relatively clear and the Exif data also.
In the image "4849 1 over 4000 fail" I only reduced the power of the YN560II from 1/1 to 1/2 - and it no longer worked.
The reason why this trick works at all, is the measurement pre-flash which the D80 sends over the YN565EX .
This measurement pre-flash occurs BEFORE the the focal plane shutter begins to open and ignites the YN560II, which works as an optical slave.
Only when the YN560II fires at full power, the flash duration seems to be long enough in order to properly expose the image.
At half the power of the 560II, you can only at 1/500 sec recognize a narrow strip that is exposed by lightning
(DSC 4854 1 over 500 half)
and only at 1/320 sec the Shutter is open long enough again to be able to exploit the shorter duration of the flash
(DSC 4856 over 1 320, little bit overexposed;) )
For a better understanding, I show a schematic of the setup (HSS-Hack D80) and some "photographic evidence".
( Thanks to Galllo for the provision of lighting sympols for Photoshop an PS Elements ).
Every trip starts with a cup of coffee.... Our Community Manager, Hera, was particularly enjoying this Berlin cuppa from The Barn as she wrote a blogpost about #FlashHacks.
Picture taken with a flash at an exposure time shorter than the minimum flash synchronization-time.
For more information see DSC_4848 1over 4000 and HSS-Hack D80.
Picture taken with a flash at an exposure time shorter than the minimum flash synchronization-time.
For more information see DSC_4848 1over 4000 and HSS-Hack D80.
Fellows with a mission! The most dedicated coders on the two days were Andrew and Alan from Code for Europe who kept typing on that keyboard despite the scorching sun. Andrew wrote his first bot ever during #FlashHacks.
Picture taken with a flash at an exposure time shorter than the minimum flash synchronization-time.
For more information see DSC_4848 1over 4000 and HSS-Hack D80.
Picture taken with a flash at an exposure time shorter than the minimum flash synchronization-time.
For more information see DSC_4848 1over 4000.
Picture taken with a flash at an exposure time shorter than the minimum flash synchronization-time.
For more information see DSC_4848 1over 4000 and HSS-Hack D80.
Picture taken with a flash at an exposure time shorter than the minimum flash synchronization-time.
For more information see DSC_4848 1over 4000 and HSS-Hack D80.
Peter, hard at work on a pile of #FlashHacks tshirts - because, they are more comfortable & cooler - naturally.
Picture taken with a flash at an exposure time shorter than the minimum flash synchronization-time.
For more information see DSC_4848 1over 4000 and HSS-Hack D80.
Chris, CEO of OpenCorporates, looking very pensive as he works with the team from St.Oberholz a day before the launch of #OKFest14.
Alan and Rory from Code for Europe getting their heads around downloading a lot under intermittent WiFi. Hats off to their resilience! They stayed till the end.
Matthias from Transparency International Austria looking up German datasets for #FlashHacks as Chris talks to someone in the background.
Ricardo, Designer & Data Architect at @JPlusPlus_PT and @ManufacturaInd from Portugal writing a bot.
Chris, Daniel and Andy eyeing the beer while Rae and Code for Mexico fellows code in the background.
Completely zoning out the wild networking going on around him was François Briatte who wrote a scraper in R!
Hera posing for yet another picture with John and Stuart from Wikimedia UK. They are also all part of the team putting together Wikimania!