Posted by Maherjos on 11-10-2017 10:30
#12
johnes81 wrote:
File properties show Canon EOS-1Ds Mark II with a focal length of 65 mm.
The 65 mm lens is not really a brand thing rather, a ratio. The 65 mm lens is a 'larger than life' lens, id est, 2:1-to-5:1. Most macro lenses are life size, id est, 1:1 ratio. None of us really want life size but the lens manufacturers do nothing to give us superb larger than life lenses. The 65 mm is very nice but lacks image stabilization and autofocus. A few 2:1+ lenses exist pre- and post 65mm but the Canon is better than all of the others. I've asked many times for a modern 2:1+ lens but nothing yet. I feel cheated because we have to circumvent this issue with extension tubes, microscope objectives, reverse lenses and other tactics. Ridiculous!
You have been very successful in your appreciations.
And, indeed, Canon's 65 mm macro lens is extraordinary precisely because there is no other like it.
And I assure you that for these types of photographs that I always do to the pulse, the autofocus has no interest whatsoever. First I set the magnification from 1: 1 to 5: 1 and move the equipment to focus.
Nor would the image stabilization be interesting. It is almost impossible to make macros at F: 16 with natural light. You have to use the flash. The brief flash illumination stops the vibration ...