Hmm...I have a slight modification to that for my weddings.

Commonly ceremonies are during the day, when there is enough light to
not really need flash - however, fill flash will help with shadows and
the occasional dark shot.  So for that, I set the camera to
HyperManual/Center weighted (I normally shoot this mode) and set the
flash to P-TTL with High Synch.  Then set the flash to about -1 to -2
compensation.  Then just shoot as if you didn't have the flash on.
This puts a catchlight in the eyes, warms up skin tones in the shade
and fills dark eye sockets.  If you set the compensation correctly,
you cannot really tell a flash was used.

Most receptions are later in the day or in a venue where it is darker.
For this, the technique Mark describes is about what I do.  Set the
ISO up to 400, to allow for as much ambient as you can.  Set the flash
to P-TTL and set the camera to manual.  Shutter speed to as slow as
you can comfortably hold it still and pick an aperture that works for
you - I normally shoot around 5.6 - 8.  Just be aware of your meter
reading that it doesn't jump to overexposure and you are all set.

HTH,

Bruce


Wednesday, June 6, 2007, 1:41:32 PM, you wrote:

MR> Scott Loveless wrote:

>>Hey, Mark!  You enlightened us over the weekend about using P-TTL flash
>>with the camera on "manual".  Care to re-enlighten?  I'm afraid the 
>>booze and lack of sleep has purged that memory from the old noggin.

MR> You talkin' to me or the other Mark? (You weren't alone with regards to
MR> booze and lack of sleep.)

MR> Anyway, here's how you do it:

MR> Set camera to manual exposure.
MR> Attach flash with bounce card.
MR> Set flash to P-TTL auto.

MR> Set shutter speed the slowest speed you feel safe hand-holding; if
MR> you're using a zoom, assume the longest focal length it reaches.

MR> Set the aperture a stop or two down from wide open -- there's something
MR> of a judgment call here because it depends on the focal length of the
MR> lens your using, how much DOF you want and how much ambient light there
MR> is. 

MR> The result of the above procedure should be that the meter in the 
MR> camera will show underexposure pretty much everywhere you point it (in
MR> locations you're going to be shooting the wedding). If it regularly
MR> shows more than two stops of underexposure or if it shows overexposure
MR> anywhere you'll need to change shutter speed, aperture or ISO. You
MR> often have to compromise here...

MR> So now you've got a slow shutter speed you can hand-hold, an aperture
MR> that gives you the DOF you want and exposure that varies from perfect
MR> to "about-two-stops-under" everywhere you're shooting. The P-TTL flash
MR> will automatically provide whatever amount of fill is necessary to make
MR> the overall exposure good. (Your manual exposure setting shouldn't show
MR> overexposure anywhere because, obviously, the flash can't subtract
MR> ambient light when there's too much, it can only provide extra light
MR> when there's too little.)

MR> You can experiment with dialing in a little underexposure to the flash,
MR> to see if it suits your equipment setup and/or taste.

MR> This setup won't deliver *perfect* results all the time but it will
MR> give you very usable results almost all the time. When you're in really
MR> dark spots (two stops under on the meter) the flash will be 
MR> contributing more of the total exposure than you'd ideally like. And
MR> when you're in bright areas it will contribute nothing. But you'll
MR> almost always get something you can use. This is what you want for
MR> weddings because, for most shots, you get only one chance. 

MR> I learned this technique from a local wedding pro who does high end
MR> (*very* expensive) weddings. He shoots mostly PJ style (but with the
MR> usual requisite posed shots). He usually works alone unless he's 
MR> providing video services as well. He does extraordinary work and makes
MR> a ton of money doing it. He's won scads of awards, which he refuses to
MR> display in his studio: He'll only display prints of his work there.

MR> We met when an "Internet Directory Service" tried to scam him and gave
MR> me and my web site as a reference even though I had nothing to do with
MR> them. He called their bluff by calling me :) I worked a couple of 
MR> weddings with him to see if I might do some work for him. I decided
MR> against getting into wedding photography but I learned a *lot* from the
MR> experience.





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