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SMC1 vs SMC3 DOF

foetusmachine
in Photography Gear and Technique

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Posted

Hi All, I've just invested in an SMC3 after having used the SMC1 for a number of years. I've only been able to use it on 3 dives so far, but I have a question for those familiar with both lenses used in front of a sony FF and 90mm macro.

My question is... for any given fstop, does the SMC3 have a narrower DOF than the SMC1?

The DOF is razor thin anyway, but is it thinnerer on the SMC3? Maybe there's a mathematical answer and an answer from the gut.

I'm only using my gut after 3 dives, so have nothing scientific to back its churning feeling, but I feel like the SMC3 has less DOF.

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