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Author Topic: A7r flash sync  (Read 952 times)


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A7r flash sync
« on: November 21, 2017, 08:40:19 AM »

I am using A7r>Metabones>Canon lenses

My work usually covers architecture and art world.

I am very satisfied with this combo for the most part, especially using shift lenses, but when I need to use flash (for repro shots for example) I wonder if I should upgrade the body.

The problem I experience is that I seem to need to use 1/100th or even 1/80th to avoid seeing the shutter. Unfortunately I don't have any native lenses to make a comparison with.

Has anyone else experienced this issue on a7r and further, does anyone know if this issue is resolved on the ii or iii (still using Metabones and EF)?


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Re: A7r flash sync
« Reply #1 on: November 24, 2017, 12:41:04 PM »

I'm in the same situation. We are using r7 with Metabones III and Canon 100mm IS USM Macro for reproduction work.
I found that 1/80 is the fastest possible sync speed.
We use it, no problems. Canon macro is used for small originals from 35mm negs and slides to 8x10" size. With bigger ( A4 and bigger)  prints we use Sony Zeiss 50mm lens.
Used sync speed is the same. It works, but I have to test if the flash sync problem is depending with metabones/canon lens combination or is it a feature of Sony.
Now I'm wondering of upgrading. We have Canon lenses and 100mm macro is excellent. So I think we maybe move to 5DsR w/o adapter or to 7R II/7R III with Metabones adapter.
If somebody have experience of those, I'm very interested also.
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