Re: [OM] TTL flash theory, was: An object of beauty

[Chuck Norcutt]

Certainly... for a single shot done manually at a range within the 
angular coverage of the flash.  But the exposure was done with multiple 
flashes in flash auto mode... which, even ignoring possible overlapping 
flashes, with be attempting to turn the black train into a middle gray one.

Chuck Norcutt

Ken Norton wrote:
>> And how did you determine the number of flashes to be used?  Especially
>> since you were photographing a black object.
>>
> 
> Wouldn't the laws of "flash to subject distance" still apply?  It may be a
> black object, but like most black objects, reflect a lot of light.
> 
> AG
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