Archived posting to the Leica Users Group, 2001/04/24

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: Re: [Leica] Other TTL flash system with R8, was: Nikon SB28forM6TTL
From: "Steve LeHuray" <icommag@toad.net>
Date: Tue, 24 Apr 2001 15:15:48 -0500

> Steve LeHuray wrote:
>> 
>> > Steve LeHuray wrote:
>> >>
>> >> >>Just my .02 cents. I have no use for TTL flash, the recycle time is to
>> >> > slow.
>> >><Snip> . The tests, not exhaustive or sceintific, that i have
>> >> done with the metz and the SB28 seem to indicate a longer recyle time in
the
>> >> TTL mode. Typically I shoot with flash at f8 with the subject never any
more
>> >> than 10 feet away but usually 5 to 6 feet. Also would like to add that I
>> >> hate using any flash and am certainly no expert on the subject.
>> >>
>> >> sl
>> >
>> > Hey guys why would the recycle time be slower in TTL mode than A mode?
>> > I don't see any logic in that!!!
>> >
>> >
>> > Mark Rabiner
>> > to be continued....
>>
>> This is my test......mount flash on F3HP, set shutter on X, f5.6, set strobe
>> on TTL. Then press button on motor drive continuos till flash fails.
>>
>> Do the same thing again except set strobe on Automatic, press button on
>> motor drive continuos, flash keeps going much much longer.
>>
>> I think the reason is on automatic there is no sensor trying to figure out
>> your exposure.
>>
>> sl
>
> On automatic the sensor is right there on the flash. Have you got it set up so
> the mode is 5.6 same as your lens?

Yes I match the f. stop on flash & lens

> IN TTL mode that sensor is bypassed and the one in the camera is used.
> Could the use of the in camera sensor make the flash significantly less
efficient?
> Does not seem likely or logical.The opposite seems more likely to me. Your TTL
> sensor is asking for more light from your flash for some reason if you ask me.

You may be right, I do not know
>
> I should have prefaced this by saying that i have used a LOT of TTL and A
> flashes going back and forth between modes.
>
> There are plenty of variables as in is the sensor on your flash asking for as
> much light as the sensor in your camera because if you are using a telephoto
or
> wide angle lens than that sensor could be judging a different ball part than
the
> dumb one your flash sees.

I do not use a telephoto--always 19mm to 50mm
> I think your UV filter is absorbing all your flash before it hits your in
> camera sensor!!
> Yea that's the ticket!

Hey Bub!! You have me confused with somebodies else--do not use any
steeenkin filters--even on Nikor.

sl
>
> mark rabiner
> put your UV filter over your flash!!!
>