Originally posted by samtrundle:
I think I'll bump this one.
How close does that 60mm focus anyway - I've noticed that to get 1:1 I'm a lot closer to the object than I would have expected. |
Oddly, in practical terms it's not much different from the 100mm Canon Macro. Reason: minimum focusing distance is measured to the film plane, but in practical terms it's how close the glass is to the subject that matters. Since the the 60mm is a about 2 inches shorter than the 100mm (it's one of the new, digital-specific short back focus designs) the real-world difference is only like a couple inches. It "feels" about the same as the 100 to me, in terms of how close I'm sticking my snoot.
To be precise, the 60mm focuses to .65 feet, the 100mm to 1.0 foot. So difference-to-focal-plane is about 4 inches. But the 60mm is 2.8 inches long and the 100mm is 4.7 inches long: so the glass is a tad over 2 inches closer, not that much of a difference really.
To look at it another way, you'd "expect" to be a foot from your subject if the lens focuses to 1 foot right? But the body's like 2 inches deep, and the 100mm lens is like 4.7 inches, so that's more than 6 inches of your 12 being occupied by the camera, leaving you less than 6 inches glass-to-subject.
Robt.
Message edited by author 2005-07-27 00:57:13.
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