OK, I have been looking at getting some extension tubes for some macro work and trying to figure out the math. On Adorama they have a Kenko extension tube that states "magnification ratio for Tube 25 is about 1/2 with the 50mm standard lens". So when looking at this it would seem that the 50mm lens would act more like a 100mm and would that also equate to a reduction in minimum focus distance by 1/2? According to the specs the 50mm has a minimum focus distance of 1.5ft or 18 inches, would that then change to 9 inches?
I understand the concepts behind the depth of field changes with the extension tubes but not sure on the other affects based on the extension tube numbers.
I am actually looking at getting the Kenko DG auto extension tube set which has the 12, 20, and 36 included. I want to know what each is going to bring to the table.
Thanks,
I understand the concepts behind the depth of field changes with the extension tubes but not sure on the other affects based on the extension tube numbers.
I am actually looking at getting the Kenko DG auto extension tube set which has the 12, 20, and 36 included. I want to know what each is going to bring to the table.
Thanks,