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600mm f/4 400mm f/4 ED(IF) + 1.4X300mm f/4 ED(IF) + 1.4X
A Big Gun Shoot Out
I'm always interested in determining for myself how different lenses compare. I don't shoot lens charts and count lines / millimeter, but I do find that shooting some real-world subjects can tell me a lot about how lenses perform and compare.
Among medium format camera makers Pentax undoubtedly has the broadest selection of long lenses for their 67 camera system. ThePentax 67 IIis the largest camera that one can take into the field that offers very long lenses, suitable for wildlife and highly compressed landscapes — two of my primary pursuits. So, when I purchased the400mm f/4 ED(IF)lens I was particul...

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Michael Reichmann is the founder of the Luminous Landscape. Michael passed away in May 2016. Since its inception in 1999 LuLa has become the world's largest site devoted to the art, craft, and technology of photography. Each month more than one million people from every country on the globe visit LuLa.
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