crwdns2934241:0crwdne2934241:0 Dr. Salem Al-Qabandi

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Why my flash doesn't always work when using manual mode?

crwdns2934249:0crwdne2934249:0:

Hi

When I'm trying to take intra oral pictures from patient and the mode is set to manual, the flash doesn't always work. So some of my pictures are black.

Sometimes for one patient I have to take more than 20 pictures because some turn black.

How can I fix this problem?

crwdns2866306:0crwdne2866306:0:

Nikon D90

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open