gruhl28 said:I have the RRS rail. The only issue I have with it is that when you lock it down there is a bit of image shift.
I had read that using a rail was better for stacking than changing focus, but I'm not sure I agree with that now having some experience. Sure, focus breathing is an issue, but framing changes when using a rail also, and not only that but relative positions of objects change when moving a camera, which cause issues with focus stacking.
Issues with just changing focus were what caused me to get a rail. The latter generally works better for me, but the range that works is rather limited close to 1:1.
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