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> Calculating exposure using extention tubes |
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Calculating exposure using extention tubes
Recently purchased old stock but brand new Bronica 42mm extention tubes from (Jessops of all places) - silly price on their website £34 but on reading the manual, it states you need to increase exposure because they is less light entering the lens and you are probably closer to you subject.
I have a Bronica ETRSi (no metering) but do have WLF and a plain prism. I was wondering if I could still use my external meter as I would normally and still get correct exposure? I assume I won't need to make any exposure compensation if I stick to either incident or spot using my sekonic. Am I correct in this assumption and if so, which external metering pattern would be better. If I went spot I could place a grey card in front of my subject - any tips! The manual seems to reference exp. compensation when using an AE prism. Can't afford a macro lens so, I thought I'll have some fun and experiment with using tubes instead. Thanks for any tips and advice apxuser |
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