Strobe Help

[aWebJam]

I have been playing around with strobes for the first time. I have read many article on using strobes and have been following The Strobist for a while now. The two shots below were identical in ISO, Aperture, and shutter speed. The only difference is the one on the left the pop up flash on my camera fired with the strobe and the one on the right it did not.

Why is there such a vast difference? Is my camera sending the same metering to the M110 strobe when the pop up flash is engaged? Any advice would be greatly appreciated.



thanks for your time,
James

[natek313]

Are you sure the strobe fired on the first shot? It doesn't look like it did at all.

You may have hit the shutter button before the strobe was fully charged and ready to fire.

[aWebJam]

I thought that at first as well but it did fire on both pictures. I tried some with me as the subject staring at the strobe to be certain it fired and the reults were the same.

[sk66]

The question is why did it fire in the first and not the second? If it's because you told it not to fire in the second, then the information being sent to the remote flash (if using cls) was different.

It actually looks to me that the remote flash is on "manual". In the first image the camera expected a "proper exposure" using just the onboard flash, but was underexposed (popup trimmed back). In the second the camera exposed expecting no flash, but got the remote flash resulting in overexposure.

[sk66]

Originally Posted by aWebJam

The two shots below were identical in ISO, Aperture, and shutter speed. The only difference is the one on the left the pop up flash on my camera fired with the strobe and the one on the right it did not.
James

I should have read closer...

First, are you sure?...

I would guess it's a matter of how the remote is getting it's info. There is no way that shutter, iso, aperture are identical and the ONLY difference is that the first had the ADDED popup flash... If everything else is identical, then the first shot has the remote flash not firing or terribly underpowered from expected. In the second the the remote is adding due to having no fill (this sounds like cls... with manual override)

[aWebJam]

The strobe is connected to the camera with a sync chord. I did in fact disable the on camera flash for the second image.

I was shooting in manual mode at 1/125 f8 ISO 100.

[sk66]

I suspect you can not use the sync cord AND the onboard popup....check your manual.

[aWebJam]

Originally Posted by sk66

I suspect you can not use the sync cord AND the onboard popup....check your manual.

Thank you. That seems to be the problem. I was thinking I could use the pop up flash as fill, but apparently you cannot while using a sync chord.