[Leica] Flashbulbs + M8

[henningw at archiphoto.com (Henning Wulff)]

Sounds good. Yes, I guess the M bulbs can get enough of their energy 
out by that time.

>Using front curtain flash and a shutter speed not higher than 1/30 will
>allow the 20 millisecond bulbs to reach peak luminance during the
>exposure.
>
>Phil Forrest
>
>
>On Sat, 24 Jul 2010 12:13:16 -0700
>Henning Wulff <henningw at archiphoto.com> wrote:
>
>>  How are you going to sync the bulbs? The built in sync will fire the
>>  bulbs too late.
>>
>>  The sync current for most bulb flash guns is tiny; but the timing
>>  won't work.
>>
>>
>>  At 6:24 PM -0400 7/23/10, Philip Forrest wrote:
>>  >I already own the M8, so most of the expense is right there.
>>  >Flashbulbs can be had cheaply around here at yardsales, thriftstores
>>  >and sometimes online.
>>  >I don't want full visible spectrum + IR. I just want above 700nm
>>  >which, with ISO 160 would force me to use a tripod and expose for
>>  >several seconds unless I blast it with a powerful flash.
>>  >
>>  >The flashbulbs emit a LOT of IR and with the 720nm filter, the
>>  >attenuation of that end of the spectrum is great so it brings out the
>>  >foreground a lot and can effectively black out the background, even
>>  >during the daytime. This way, I shoot at 1/30 sec and use GN for my
>>  >apertures.
>>  >
>>  >Buying another camera and having it modified is not really the
>>  >solution I'm looking for, nor can afford.
>>  >
>>  >Phil Forrest
>>  >
>>  >
>>  >On Fri, 23 Jul 2010 15:07:32 -0700
>>  >Richard Man <richard at imagecraft.com> wrote:
>>  >
>>  >>  Hmm... may be cheaper and easier to convert a u4/3 camera to full
>>  >>  time IR and then use a Leica->u4/3 adapter? You get full exposure
>>  >>  without the filter in the front and with the EVF, you get dead on
>>  >>  focusing without errors.
>>  >>
>>  >>
>>  >>  On Fri, Jul 23, 2010 at 1:41 PM, Philip Forrest
>>  >>  <photo.forrest at earthlink.net
>>  >>  > wrote:
>>  >>
>>  >>  > I'm wanting to use flashbulbs with the M8 to shoot IR photos
>>  >>  > using my 720nm opaque filter. The flashbulbs put out much more
>>  >>  > light and further, much more IR than my strobes. This will
>>  >>  > allow me to shoot IR handheld at 160 ISO, illuminating the
>>  >>  > subject and depending upon background distance, leaving the
>>  >>  > background completely dark. Effectively, turning day into night.
>>  >>  >
>>  >>  > The question I have is if the current of the flashbulb unit
>>  >>  > could harm the M8. I called Leica NJ and they said they had no
>>  >>  > idea (after researching the question for 3 days) how the
>>  >>  > current from the CEYOO would affect the M8 since they do not
>>  >>  > have any data regarding current in that flashbulb unit.
>>  >>  >
>>  >>  > Optimally, I'd like to use a CEYOO but for now and for scenes
>>  >>  > needing a bit more light, I'm using a Graflex Graflite with #5 &
>>  >>  > #25 bulbs synched with a pocket wizard. This is a clumsy and
>>  >>  > very large setup though.
>>  >>  >
>>  >>  > My question is: can anyone out there measure the current from a
>>  >>  > CEYOO when a flashbulb is triggered?
>>  >>  >
>>  >>  > Thanks all!
>>  >>  > Phil Forrest
>>  >>  >
>>  >>  > _______________________________________________
>>  >>  > Leica Users Group.
>>  >>  > See http://leica-users.org/mailman/listinfo/lug for more
>>  >>  > information
>>  >>  >
>>  >>
>>  >>
>>  >>
>>  >
>>  >
>>  >_______________________________________________
>>  >Leica Users Group.
>>  >See http://leica-users.org/mailman/listinfo/lug for more information
>>
>
>
>_______________________________________________
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>See http://leica-users.org/mailman/listinfo/lug for more information

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    *            Henning J. Wulff
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