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rickpaul

Tucson, US
1808 posts

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rickpaul Silver Member Laureate Ribbon awarded for winning a Nikonians Annual Photo Contest Charter Member
Wed 26-May-10 06:14 PM

OK, I'm sorry, but I'm going to rant about the SB-900 again.

This thermal shutdown thing is ridiculous. I cannot count on the SB-900 to get me through a location shoot without shutting down, and shutting down quickly.

Today I was shooting a graduation ceremony. I had shot a few test pictures (~30) over a 45 minute period. Then I shot 10 pictures over a 5 minute period. Thermal shutdown. SB-900 was connected to an SD-9.

That's it? 40 pictures in 50 minutes is all I get? Also, during the first 45 minutes I was turning the SB-900 off between shoots to try to keep it cool.

Once the ceremony got rolling, I had no choice. I had to get the shots, fried SB-900 or not. So I turned the thermal shutdown off, and shot away. I took another 200 pictures over a 15 minute period.

Good news? In the end, the SB-900 came through just fine. No apparent damage whatsoever, and it got ever shot for me.

My conclusions are either

(A) My SB-900 is calibrated incorrectly and goes into shutdown way too early

or

(B) Nikon's Thermal Shutdown feature is just way too conservative

In any event, in the future, I'm going to back up my SB-900 with a second SB-900 and cycle between them as they cool off. Seems to be the only solution to this until Nikon delivers a truly professional flash unit that can deliver.

--------------------------
Rick Paul
The Photo Professors

Saguaro Shadows Photography
Tucson, Arizona

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G