R5 lunar photography with stacked EF extenders

Started Dec 14, 2021 | Discussions thread
BobKnDP Senior Member • Posts: 4,682
Re: R5 lunar photography with stacked EF extenders

I'm still mystified.

I don't see how you could focus at infinity with a 12mm spacer between the two TCs.

The 600mm plus the 2x, combined with a 12mm spacer, would make the infinity focus come in to about 120m. I doubt that any focus capability of the 600 beyond infinity could help nearly enough to get infinity focus.

The second TC shouldn't alter that.

Unless the EF to RF adapter has been shortened, I don't know how you got the Moon in focus

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