unless as a last resort, when there's no natural light available.

While the iPhone flash "can provide the light you need in a pinch," it's "often too bright" and leaves the background underexposed (i.e., too dark), said Dr. Joshua Sariñana, who won first place in the "Series" category and second place in the "Travel" category in the IPPAWARDS.

"I would only do [flash] if there is practically no light ... like in a power outage," added Dr. Sariñana.

[Photo by Joshua Sariñana]

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