This blog is my attempt to keep track of some of the things I learn along the way, with my Canon 7D, G12 and accessories. All images copyright Brad Calkins, not to be used without permission (or purchase). I do not attempt to monetize my blog, other than to promote my stock photo portfolio on Dreamstime.

Wednesday, April 21, 2010

Bokeh by Zeiss

I've become increasingly interested in Carl Zeiss lenses, but still don't know if I'll actually spring for one. The 35mm f/2 Distagon seems to fit the bill for a high quality fast prime for under $1,000 (unlike the Canon 35mm f/1.4). No autofocus, though :)

Anyways, Zeiss has a newsletter and currently has a very comprehensive PDF that goes over many of the challenges of lens design and how it affects the characteristics of how a lens 'draws', among other things, the out of focus areas and results in good or bad bokeh. Of note are a few key points and reminders about bokeh - there are many misconceptions out there: the bottom line is that there is more to it that just the number of blades (though that helps too!).

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