Monday, 9 July 2018

What are the pros and cons of using macro rail vs lens focus?


I am interested in doing focus stacking for macro shots and from what I understand there are two techniques for doing this.


One is to use a macro rail that adjusts the length to the subject (e.g StackShot)


The other is adjust focus in the lens either directly via the lens ring or through remote live view by picking the focus point (e.g Canon's EOS Utility lets you pick focus points remotely).



The second approach to me seems a lot easier and faster so I am wondering why anyone would use the rail approach. Is there any advantage of the rail approach? Has software which lets you remotely pick focus points (which essentially drive the lens motor) basically made the rails technique obsolete?




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