How do you figure out magnification?
Feb 6, 2013 04:53:25 #
Using a Canon 100mm 2.8 macro lens and I added a set of extension tubes to it for closer imaging. The Kenko tubes give you a further 68mm extension. I wondered what magnification I'd be getting if I set the lens to its minimum manual focus and used a focus rail to bring the subject in till it was sharp. I was hoping I'd find it was over 2 times, but am kinda doubting it now.
Feb 6, 2013 07:21:50 #
Feb 6, 2013 08:28:19 #
Thank you for the link, it was plain common sense and easy to figure out after the explanation.
Feb 6, 2013 13:31:03 #
Here is a link to a site that I have bookmarked on my computer that helps to calculate several types of macro magnifications.
http://www.peterforsell.com/macro.html
http://www.peterforsell.com/macro.html
Feb 6, 2013 23:32:23 #
PhotoStar wrote:
Using a Canon 100mm 2.8 macro lens and I added a set of extension tubes to it for closer imaging. The Kenko tubes give you a further 68mm extension. I wondered what magnification I'd be getting if I set the lens to its minimum manual focus and used a focus rail to bring the subject in till it was sharp. I was hoping I'd find it was over 2 times, but am kinda doubting it now.
With my 105 Nikkor @ 1:1 and 68 mm of extension, I've calculated mine to be 1.9:1, so almost 2:1.
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