this post was submitted on 16 Nov 2023
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Photography

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How does TTL studio flash work? (alien.top)
submitted 10 months ago by Commercial_Sun_6300@alien.top to c/photography@viewfinder.pro
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So, I'm obviously new to studio lighting. I understand the basics of exposure and I'm aware of the inverse square law, which leads me to the question in my title: how can the remote trigger on the camera adjust the flash power for the off camera flash?

Do you have to input the distance the flash is from the subject? I found a Wikipedia article describing how TTL metering works, but I think my question is different.

Honestly any guidance on how to learn how to calculate exposure using multiple strobes would be appreciated.

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