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M8+ Flash SF 24D = Problems


Guest Olof

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I tried to make e portrait with the M8+Noctilux at 1.0 + Flash SD 24D at 160 ISO and all the pictures becomo to "white".

 

Only at 4.0 the exposure was OK, but shouldt the M8+ SD24D also handle it at 1.0 ?

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Olof--

There have been a number of threads on how to set flash units to work with M8; at the moment I can only find one of them, http://www.leica-camera-user.com/digital-forum/12307-m8-metz-54-flash.html.

 

Maybe it will give you some help even though it's written about a different flash. Otherwise I'm sure someone with the SF 24D + M8 combination will respond.

 

Good luck!

 

--HC

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If all else fails, I'd suspect the problem is as Mark says, the minimum output from the flash is too powerful. I'd suggest using at least a 4 stop or 16x neutral density filter over the flash, or several filters to give you this light attenuation. You can purchase inexpensive neutral density lighting gels to experiment with.

 

I'm often having a similar problem with Canon flashes when using large apertures, close subjects and needing a small amount of fill in flash.

 

Bob.

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Keep in mind that f1 allows a huge amount of light in, and it may be the minimum output of the flash has been reached and the pictures are over-exposed. Are you using GNC? Is the Noctilux coded?

 

I use GNC and the Noctilux isnt coded.

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I've been trying this and get the same result.

 

The problem is that with ISO 160 and f1, even the fastest speed of 1/250 will expose correctly for EV 6 which is not very dark. The flash exposure is added on top and at f1, the flash is good for 30m if you put on the 85mm diffuser. Close up, and it's likely the flash output cannot be reduced enough to prevent over-exposure.

 

I agree with Bob, an ND filter would work, otherwise try wrapping some white fabric around the flash head.

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